topic Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6 in IP Telephony and Phones

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 17 Mar 2019 04:45:41 GMT

I have a SIP trunk from call centric that goes into my lab gear - they appear to be a good sip service due to cost but I'm having some trouble getting calls to route correctly. The call flow is Callcentric.com ITSP (SIP) --> 2811 (acting as cube) -->SIP Trunk --> CUCM 8.6. Phones are registered to CUCM.

I have the sip trunk registered and calls come in to the router (I see them in ccsip message/call debugs) The 2811 running 15.1(4)M7). Callcentric sends the username of the customer in the sip Invite instead of the called number, the called number is in the TO field. I have several DID’s from Callcentric (18452055544, 18452055545, 18452055546) for my lab. There are a few configs on here for CME where the customer number (17772253754) is simply translated to their phone DN - which is fine if you only have 1 DN with callcentric but more than 1 and thats not feasible since every inbound did will be matched to that 17772253754 translation/phone dn.

I’m using the a guide from http://tblog.cisco.be/2011/02/17/cube-conditional-sip-profiles/ using the Copy function as described http://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-software-release-15-1-3-t/product_bulletin_c25-635704.html

I haven’t been able to find anything where they actually explain all the header fields so Its mostly trial and error.. so far mostly error. I think I’m close.. but who knows. Any assistance would be greatly appreciated

voice class sip-profiles 1

request INVITE peer-header sip TO copy ".sip:(.*)@." u01

request INVITE sip-header SIP-Req-URI modify ".*@(.*)" "INVITE sip:\u01@\1"

CUCM (single/pub)- 192.168.1.200

2811 acting as cube - 192.168.1.203

Calling Number - 18165297500

Called Number - 18452055544

vrtr1#show sip register status

Line peer expires(sec) registered P-Associ-URI

================================ ========== ============ ========== ============

17772253754 -1 20 yes

vrtr1#

The Call Setup Information is:

Call Control Block (CCB) : 0x49646C28

State of The Call : STATE_DEAD

TCP Sockets Used : NO

Calling Number : 18165297500

Called Number : 17772253754 (my customer number not called number)

Source IP Address (Sig ): 192.168.1.203 (my 2811 router)

Destn SIP Req Addr:Port : 204.11.192.159:5080

Destn SIP Resp Addr:Port : 204.11.192.159:5080

Destination Name : 204.11.192.159

Feb 14 11:20:53.303: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received:

INVITE sip:17772253754@192.168.1.203:5060 SIP/2.0

v: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-805ff2443b18502ff96181045b62dd74

f: <sip:18165297500@66.193.176.35>;tag=3601387252-874282

t: <sip:18452055544@ss.callcentric.com>

i: 2917398-3601387252-874253@msw2.telengy.net

CSeq: 1 INVITE

Max-Forwards: 8

m: <sip:ca7fe50c9cebe12327fe0d63c5962a3e@204.11.192.159:5080;transport=udp>

Supported: timer

c: application/sdp

l: 350

v=0

o=NexTone-MSW 2147483647 2147483647 IN IP4 204.11.192.159

s=sip call

c=IN IP4 204.11.192.159

t=0 0

m=audio 61094 RTP/AVP 18 0 8 101

a=fmtp:18 annexb=no

a=fmtp:101 0-15

a=rtpmap:101 telephone-event/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:0 PCMU/8000

a=rtpmap:18 G729/8000

a=ptime:20

a=sendrecv

a=silenceSupp:off - - - -

a=setup:actpass

Feb 14 11:20:53.327: //936/310B294680AD/SIP/Msg/ccsipDisplayMsg:

Sent:

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-805ff2443b18502ff96181045b62dd74

From: <sip:18165297500@66.193.176.35>;tag=3601387252-874282

To: <sip:18452055544@ss.callcentric.com>

Date: Fri, 14 Feb 2014 17:20:53 GMT

Call-ID: 2917398-3601387252-874253@msw2.telengy.net

CSeq: 1 INVITE

Allow-Events: telephone-event

Server: Cisco-SIPGateway/IOS-12.x

Content-Length: 0

Feb 14 11:20:53.327: //936/310B294680AD/SIP/Msg/ccsipDisplayMsg:

Sent:

SIP/2.0 404 Not Found

Via: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-805ff2443b18502ff96181045b62dd74

From: <sip:18165297500@66.193.176.35>;tag=3601387252-874282

To: <sip:18452055544@ss.callcentric.com>;tag=35399D8-63

Date: Fri, 14 Feb 2014 17:20:53 GMT

Call-ID: 2917398-3601387252-874253@msw2.telengy.net

CSeq: 1 INVITE

Allow-Events: telephone-event

Server: Cisco-SIPGateway/IOS-12.x

Reason: Q.850;cause=1

Content-Length: 0

Feb 14 11:20:53.419: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received:

ACK sip:17772253754@192.168.1.203:5060 SIP/2.0

v: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-805ff2443b18502ff96181045b62dd74

f: <sip:18165297500@66.193.176.35>;tag=3601387252-874282

t: <sip:18452055544@ss.callcentric.com>;tag=35399D8-63

i: 2917398-3601387252-874253@msw2.telengy.net

CSeq: 1 ACK

Max-Forwards: 10

l: 0

u all

Feb 14 11:20:57.067: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:

Received:

ACK sip:18452055544;cic=0288;rn=6465471001;npdi@alpha14.callcentric.com:5070 SIP/2.0

v: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-6bceae47efe9f53b4234698a32ac8beb

f: <sip:18165297500@66.193.176.35>;tag=3601387252-874282

t: <sip:18452055544@ss.callcentric.com>;tag=35399D8-63

i: 2917398-3601387252-874253@msw2.telengy.net

CSeq: 1 ACK

Max-Forwards: 8

l: 0

************************** Running Config **************************

sh run
vrtr1#sh running-config
Building configuration...

Current configuration : 4189 bytes
!
! Last configuration change at 00:34:03 CST Fri Feb 14 2014
! NVRAM config last updated at 20:26:58 CST Thu Feb 13 2014
! NVRAM config last updated at 20:26:58 CST Thu Feb 13 2014
version 15.1
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service password-encryption
!
hostname vrtr1
!
boot-start-marker
boot system flash:
boot system flash flash:c2800nm-ipvoicek9-mz.151-4.M7.bin
boot-end-marker
!
!
card type t1 0 0
logging buffered 4096 notifications
enable password cisco
!
no aaa new-model
memory-size iomem 5
clock timezone CST -6 0
clock summer-time CST recurring
no network-clock-participate wic 0
!
dot11 syslog
ip source-route
!
!
ip cef
!
!
!
ip name-server 192.168.1.9
no ipv6 cef
multilink bundle-name authenticated
!
!
!
!
!
!
!
voice service voip
ip address trusted list
ipv4 192.168.1.0 255.255.255.0
ipv4 204.11.192.0 255.255.255.0
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
supplementary-service h450.12
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
sip
bind control source-interface FastEthernet0/0
bind media source-interface FastEthernet0/0
registrar server expires max 1800 min 1800
localhost dns:callcentric.com
outbound-proxy dns:callcentric.com
!
voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw
!
voice class sip-profiles 1
request INVITE peer-header sip TO copy ".sip:(.*)@." u01
request INVITE sip-header SIP-Req-URI modify ".*@(.*)" "INVITE sip:\u01@\1"
!
!
!
!
!
voice-card 0
!
crypto pki token default removal timeout 0
!
!
!
!
license udi pid CISCO2811 sn FTX1133A4QR
!
!
controller T1 0/0/0
cablelength long 0db
!
!
!
!
!
interface FastEthernet0/0
description ** LAN **
ip address 192.168.1.203 255.255.255.0
duplex auto
speed auto
h323-gateway voip interface
h323-gateway voip bind srcaddr 192.168.1.203
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
!
snmp mib persist circuit
!
!
control-plane
!
!
voice-port 0/1/0
!
voice-port 0/1/1
!
voice-port 0/1/2
!
voice-port 0/1/3
!
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 192.168.1.200
ccm-manager config
!
mgcp
mgcp call-agent 192.168.1.200 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp package-capability rtp-package
mgcp package-capability sst-package
mgcp package-capability pre-package
no mgcp package-capability res-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax t38 inhibit
mgcp rtp payload-type g726r16 static
mgcp bind control source-interface FastEthernet0/0
mgcp bind media source-interface FastEthernet0/0
!
mgcp profile default
!
!
dial-peer voice 999100 pots
service mgcpapp
port 0/1/0
!
dial-peer voice 999101 pots
service mgcpapp
port 0/1/1
!
dial-peer voice 999102 pots
service mgcpapp
port 0/1/2
!
dial-peer voice 999103 pots
service mgcpapp
port 0/1/3
!
dial-peer voice 999010 pots
service mgcpapp
port 0/1/0
!
dial-peer voice 6 voip
description ## INBOUND DID to CUCM ##
session protocol sipv2
session target ipv4:192.168.1.200
incoming called-number 17772253754
voice-class sip profiles 1
dtmf-relay h245-alphanumeric
no vad
!
dial-peer voice 7 voip
description ## INBOUND DID to CUCM ##
session protocol sipv2
session target ipv4:192.168.1.200
incoming called-number 1845205554[4-5]
voice-class sip profiles 1
dtmf-relay h245-alphanumeric
no vad
!
!
sip-ua
credentials username 17772253754 password 7 106C1B49111F17194D realm callcentric.com
authentication username 17772253754 password 7 08035E1E1D11000553 realm callcentric.com
no remote-party-id
retry invite 2
retry register 10
timers connect 100
mwi-server dns:callcentric.com expires 3600 port 5060 transport udp
registrar dns:callcentric.com expires 3600
sip-server dns:callcentric.com
host-registrar
!
!
!
line con 0
line aux 0
line vty 0 4
password cisco
login
transport input all
!
scheduler allocate 20000 1000
ntp server 199.102.46.72
ntp server 23.227.162.123 prefer
end

exit

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Manish Prasad — Sat, 15 Feb 2014 07:20:40 GMT

Hi,

Whatever i can see from CUBE config , you are sending called number 17772253754 to CUCM but CUBE did not invoked second call leg i.e. from CUBE to CUCM.

Can you try by applying these changes...

dial-peer voice 6 voip

description ## INBOUND CALL from ITSP ##

session protocol sipv2

incoming called-number 17772253754

voice-class sip profiles 1

dtmf-relay h245-alphanumeric

no vad

dial-peer voice XXX voip

description ## INBOUND DID to CUCM ##

session protocol sipv2

session target ipv4:192.168.1.200

destination-pattern 17772253754

dtmf-relay h245-alphanumeric

no vad

And then send across "debug ccsip message" from the cube.

Thanks

Manish

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Carlo Poggiarelli — Sat, 15 Feb 2014 08:22:03 GMT

Hi.

In addition to what correctly suggested by Manish (+5), please modify dtmf mode on sip dialpeers to rtp-nte.

HTH

Regards

Carlo

Please rate all helpful posts

"The more you help the more you learn"

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sat, 15 Feb 2014 16:21:57 GMT

Thank you for the reply. I've updated the dial-peers as sugested. I'm now seeing an invite go out to my CUCM however the call fails with a 403 (forbidden) which appears to come from the ITSP (Callcentric). I've included a new set of ccsip message debugs and the dial-peers as adjusted. Please let me know what you think.

dial-peer voice 6 voip

description ## INBOUND CALL from ITSP ##

session protocol sipv2

session target sip-server

incoming called-number 17772253754

voice-class sip profiles 1

dtmf-relay rtp-nte

no vad

dial-peer voice 100 voip

description ## INBOUND DID to CUCM ##

destination-pattern 17772253754

session protocol sipv2

session target ipv4:192.168.1.200

voice-class sip profiles 1

dtmf-relay rtp-nte

no vad

dial-peer voice 7 voip

description ## INBOUND DID to CUCM ##

session protocol sipv2

session target ipv4:192.168.1.200

incoming called-number 1845205554[4-5]

voice-class sip profiles 1

dtmf-relay rtp-nte

no vad

Feb 15 10:18:11.424: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
INVITE sip:17772253754@192.168.1.203:5060 SIP/2.0
v: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-d78945b444598bc22c8509d069f4789d
f: <18165297500>;tag=3601469891-655
t: <>18452055544@ss.callcentric.com>
i: 3184639-3601469891-623@msw2.telengy.net
CSeq: 1 INVITE
Max-Forwards: 8
m: <0778BAA027205CDCA5AED80C59F25866>
Supported: timer
c: application/sdp
l: 350

v=0
o=NexTone-MSW 2147483647 2147483647 IN IP4 204.11.192.164
s=sip call
c=IN IP4 204.11.192.164
t=0 0
m=audio 61782 RTP/AVP 18 0 8 101
a=fmtp:18 annexb=no
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=ptime:20
a=sendrecv
a=silenceSupp:off - - - -
a=setup:actpass

Feb 15 10:18:11.456: //2419/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-d78945b444598bc22c8509d069f4789d
From: <18165297500>;tag=3601469891-655
To: <>18452055544@ss.callcentric.com>
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 3184639-3601469891-623@msw2.telengy.net
CSeq: 1 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0

Feb 15 10:18:11.460: //2420/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Sent:
INVITE sip:@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9A91F35
From: <>18165297500@callcentric.com>;tag=8408644-12C8
To: <17772253754>
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Min-SE: 1800
Cisco-Guid: 2570262061-2509443555-2182021079-2501285341
User-Agent: Cisco-SIPGateway/IOS-12.x
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
CSeq: 101 INVITE
Timestamp: 1392481091
Contact: <18165297500>
Expires: 180
Allow-Events: telephone-event
Max-Forwards: 7
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 273

v=0
o=CiscoSystemsSIP-GW-UserAgent 2786 1511 IN IP4 192.168.1.203
s=SIP Call
c=IN IP4 192.168.1.203
t=0 0
m=audio 18168 RTP/AVP 18 101
c=IN IP4 192.168.1.203
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:20

Feb 15 10:18:11.552: //2420/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 407 Proxy Authentication Required
v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9A91F35;rport=57100;received=24.123.98.94
f: <>18165297500@callcentric.com>;tag=8408644-12C8
t: <17772253754>
i: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
CSeq: 101 INVITE
Proxy-Authenticate: Digest realm="callcentric.com", domain="sip:callcentric.com", nonce="8ae6b7b1cea74cf401e8a26fd3c7371b", opaque="", stale=TRUE, algorithm=MD5
l: 0

Feb 15 10:18:11.560: //2420/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Sent:
ACK sip:17772253754@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9A91F35
From: <>18165297500@callcentric.com>;tag=8408644-12C8
To: <17772253754>
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0

Feb 15 10:18:11.560: //2420/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Sent:
INVITE sip:@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9AA1BA3
From: <>18165297500@callcentric.com>;tag=8408644-12C8
To: <17772253754>
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Min-SE: 1800
Cisco-Guid: 2570262061-2509443555-2182021079-2501285341
User-Agent: Cisco-SIPGateway/IOS-12.x
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
CSeq: 102 INVITE
Timestamp: 1392481091
Contact: <18165297500>
Expires: 180
Allow-Events: telephone-event
Proxy-Authorization: Digest username="17772253754",realm="callcentric.com",uri="sip:17772253754@192.168.1.200:5060",response="a381f10fbbfbd255b444569fef0dddfe",nonce="8ae6b7b1cea74cf401e8a26fd3c7371b",opaque="",algorithm=MD5
Max-Forwards: 7
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 273

Feb 15 10:18:11.648: //2420/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 403 Incorrect Authentication
v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9AA1BA3;rport=57100;received=24.123.98.94
f: <>18165297500@callcentric.com>;tag=8408644-12C8
t: <17772253754>
i: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
CSeq: 102 INVITE
l: 0

Feb 15 10:18:11.660: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Sent:
ACK sip:17772253754@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9AA1BA3
From: <>18165297500@callcentric.com>;tag=8408644-12C8
To: <17772253754>
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 993622F5-959311E3-8214FFD7-951695DD@callcentric.com
Max-Forwards: 70
CSeq: 102 ACK
Allow-Events: telephone-event
Content-Length: 0

Feb 15 10:18:11.660: //2419/9933162D820E/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-d78945b444598bc22c8509d069f4789d
From: <18165297500>;tag=3601469891-655
To: <>18452055544@ss.callcentric.com>;tag=8408714-B60
Date: Sat, 15 Feb 2014 16:18:11 GMT
Call-ID: 3184639-3601469891-623@msw2.telengy.net
CSeq: 1 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=57
Content-Length: 0

Feb 15 10:18:11.752: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:

apsc-vrtr1#ACK sip:17772253754@192.168.1.203:5060 SIP/2.0
v: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-d78945b444598bc22c8509d069f4789d
f: <18165297500>;tag=3601469891-655
t: <>18452055544@ss.callcentric.com>;tag=8408714-B60
i: 3184639-3601469891-623@msw2.telengy.net
CSeq: 1 ACK
Max-Forwards: 10
l: 0

vrtr1#u al
Feb 15 10:18:14.776: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
ACK sip:18452055544;cic=0288;rn=6465471001;npdi@alpha16.callcentric.com:5070 SIP/2.0
v: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-e437c2c5cac5f1a6e147c1cd7c98aad7
f: <18165297500>;tag=3601469891-655
t: <>18452055544@ss.callcentric.com>;tag=8408714-B60
i: 3184639-3601469891-623@msw2.telengy.net
CSeq: 1 ACK
Max-Forwards: 8
l: 0

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

islam.kamal — Sat, 15 Feb 2014 16:35:32 GMT

Can you check your authentication under sip-ua?.Check the username and password under sip-ua.

SIP/2.0 403 Incorrect Authentication.

Thanks

please rate all useuful information

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Ayodeji Okanlawon — Sat, 15 Feb 2014 21:18:50 GMT

THe new INVITE you are sending doesnt contain any number in the RURI..

This is the INVITE sent to CUCM

Sent:

INVITE sip:@192.168.1.200:5060 SIP/2.0 (there is no user portion in the INVITE..i.e the called number)

Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bK9AA1BA3

From: <>18165297500@callcentric.com>;tag=8408644-12C8

I suggest you remove the sip profile 1 from your dial-peer to cucm because I think its messing up your INVITE

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"The essence of christianity is not the enthronement but the obliteration of self --William Barclay"

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 04:24:47 GMT

Thank you - I removed the sip profile from the dial-peers as a troubleshooting step. I've attached the ccsip messages debug after doing so.

It looks like the SIP INVITE now has a number (its the username and not the actual did i called). It looks like callcentric replied with a SIP/2.0 407 Proxy Authentication Required. Not sure how to get past that..

INVITE sip:17772253754@192.168.1.200:5060 SIP/2.0

Config as configured with the ccsip message debug.

voice service voip

ip address trusted list

ipv4 192.168.1.0 255.255.255.0

ipv4 204.11.192.0 255.255.255.0

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

supplementary-service h450.12

no supplementary-service sip moved-temporarily

no supplementary-service sip refer

sip

bind control source-interface FastEthernet0/0

bind media source-interface FastEthernet0/0

registrar server expires max 1800 min 1800

localhost dns:callcentric.com

outbound-proxy dns:callcentric.com

voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw

dial-peer voice 6 voip

description ## INBOUND CALL from ITSP ##

session protocol sipv2

session target sip-server

incoming called-number 17772253754

voice-class codec 1

dtmf-relay rtp-nte

no vad

dial-peer voice 100 voip

description ## INBOUND DID to CUCM ##

destination-pattern 17772253754

session protocol sipv2

session target ipv4:192.168.1.200

voice-class codec 1

dtmf-relay rtp-nte

no vad

dial-peer voice 7 voip

description ## INBOUND DID to CUCM ##

session protocol sipv2

session target ipv4:192.168.1.200

incoming called-number 1845205554[4-5]

voice-class codec 1

dtmf-relay rtp-nte

no vad

sip-ua

credentials username 17772253754 password 7 047919561B29495C48 realm callcentric.com

authentication username 17772253754 password 7 106C1B49111F17195C5C realm 24.123.98.94

no remote-party-id

retry invite 4

retry response 3

retry bye 2

retry register 5

timers connect 100

mwi-server dns:callcentric.com expires 1800 port 5060 transport udp

registrar dns:callcentric.com expires 1800

sip-server dns:callcentric.com:5060

host-registrar

Feb 15 22:15:28.440: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:
INVITE sip:17772253754@192.168.1.203:5060 SIP/2.0
v: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-c0773d290cf0723fce82a45842ed1a9d
f: <18165297500>;tag=3601512928-48129
t: <>18452055544@ss.callcentric.com>
i: 3299487-3601512928-48097@msw2.telengy.net
CSeq: 1 INVITE
Max-Forwards: 8
m: <33E88838C1C1F83FE4D98EEEC68D9BA0>
Supported: timer
c: application/sdp
l: 350

v=0
o=NexTone-MSW 2147483647 2147483647 IN IP4 204.11.192.164
s=sip call
c=IN IP4 204.11.192.164
t=0 0
m=audio 63994 RTP/AVP 18 0 8 101
a=fmtp:18 annexb=no
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=ptime:20
a=sendrecv
a=silenceSupp:off - - - -
a=setup:actpass

Feb 15 22:15:28.456: //3192/CD429E0782C5/SIP/Msg/ccsipDisplayMsg:
Sent:

apsc-vrtr1#SIP/2.0 100 Trying
Via: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-c0773d290cf0723fce82a45842ed1a9d
From: <18165297500>;tag=3601512928-48129
To: <>18452055544@ss.callcentric.com>
Date: Sun, 16 Feb 2014 04:15:28 GMT
Call-ID: 3299487-3601512928-48097@msw2.telengy.net
CSeq: 1 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0

Feb 15 22:15:28.592: //3193/CD429E0782C5/SIP/Msg/ccsipDisplayMsg:
Sent:
INVITE sip:17772253754@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKCC913E1
From: <>18165297500@callcentric.com>;tag=AD13394-1090
To: <17772253754>
Date: Sun, 16 Feb 2014 04:15:28 GMT
Call-ID: CD46E3B8-95F711E3-82CBFFD7-951695DD@callcentric.com
Supported: 100rel,timer,resource-priority,replaces,sdp-anat
Min-SE: 1800
Cisco-Guid: 3443695111-2515997155-2194014167-2501285341
User-Agent: Cisco-SIPGateway/IOS-12.x
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
CSeq: 101 INVITE
Timestamp: 1392524128
Contact: <18165297500>
Expires: 180
Allow-Events: telephone-event
Max-Forwards: 7
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 284

v=0
o=CiscoSystemsSIP-GW-UserAgent 2039 178 IN IP4 192.168.1.203
s=SIP Call
c=IN IP4 192.168.1.203
t=0 0
m=audio 17858 RTP/AVP 18 0 101
c=IN IP4 192.168.1.203
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

Feb 15 22:15:28.688: //3193/CD429E0782C5/SIP/Msg/ccsipDisplayMsg:
Received:
SIP/2.0 407 Proxy Authentication Required
v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKCC913E1;rport=64232;received=24.123.98.94
f: <>18165297500@callcentric.com>;tag=AD13394-1090
t: <17772253754>
i: CD46E3B8-95F711E3-82CBFFD7-951695DD@callcentric.com
CSeq: 101 INVITE
Proxy-Authenticate: Digest realm="callcentric.com", domain="sip:callcentric.com", nonce="a3004fd6e15e380e2387317080d640fe", opaque="", stale=TRUE, algorithm=MD5
l: 0

Feb 15 22:15:28.700: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Sent:
ACK sip:17772253754@192.168.1.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKCC913E1
From: <>18165297500@callcentric.com>;tag=AD13394-1090
To: <17772253754>
Date: Sun, 16 Feb 2014 04:15:28 GMT
Call-ID: CD46E3B8-95F711E3-82CBFFD7-951695DD@callcentric.com
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0

Feb 15 22:15:28.700: //3192/CD429E0782C5/SIP/Msg/ccsipDisplayMsg:
Sent:
SIP/2.0 503 Service Unavailable
Via: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-c0773d290cf0723fce82a45842ed1a9d
From: <18165297500>;tag=3601512928-48129
To: <>18452055544@ss.callcentric.com>;tag=AD13404-1D88
Date: Sun, 16 Feb 2014 04:15:28 GMT
Call-ID: 3299487-3601512928-48097@msw2.telengy.net
CSeq: 1 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=47
Content-Length: 0

Feb 15 22:15:28.784: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received:

vrtr1#ACK sip:17772253754@192.168.1.203:5060 SIP/2.0
v: SIP/2.0/UDP 204.11.192.164:5080;branch=z9hG4bK-c0773d290cf0723fce82a45842ed1a9d
f: <18165297500>;tag=3601512928-48129
t: <>18452055544@ss.callcentric.com>;tag=AD13404-1D88
i: 3299487-3601512928-48097@msw2.telengy.net
CSeq: 1 ACK
Max-Forwards: 10
l: 0

vrtr1#u all
All possible debugging has been turned off

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Ayodeji Okanlawon — Sun, 16 Feb 2014 05:35:24 GMT

Before we deal with the issue of the called number, lets deal with this signle call first. CUBE is sending service unavailable..Ledts deal with that first..Configure the following and attach the debug

conf t

voice class codec 1
codec preference 1 g729r8
codec preference 2 g711ulaw

codec preference 3 g711alaw---------------------add this

service sequence-numbers
service timestamps debug datetime localtime msec
logging buffered 10000000 debug
no logging console
no logging monitor
default logging rate-limit
default logging queue-limit

Then..

debug ccsip all

(such as Putty)

then do the ff:

terminal length 0
show logging

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"The essence of christianity is not the enthronement but the obliteration of self --William Barclay"

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Manish Prasad — Sun, 16 Feb 2014 05:45:05 GMT

If i am correct 192.168.1.200 is your CUCM ip.

Here CUCM is responding with proxy authentication required message. I dont know why CUCM is asking for proxy authentication, did you added SIP trunk on your CUCM correctly ? Does any kind of authentication placed in CUCM sip trunk for Inbound calls ?

Sent:

INVITE sip:17772253754@192.168.1.200:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKCC913E1

From: <>18165297500@callcentric.com>;tag=AD13394-1090

To: <17772253754>

Date: Sun, 16 Feb 2014 04:15:28 GMT

Call-ID: CD46E3B8-95F711E3-82CBFFD7-951695DD@callcentric.com

Received:

SIP/2.0 407 Proxy Authentication Required

v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKCC913E1;rport=64232;received=24.123.98.94

f: <>18165297500@callcentric.com>;tag=AD13394-1090

t: <17772253754>

i: CD46E3B8-95F711E3-82CBFFD7-951695DD@callcentric.com

Now CUBE is responding to that proxy authentication request with Callcentric credentials which is incorrect. The credentials for callcentric is only for the call placed or received from ITSP not towards the CUCM.

Cal you attach "debug voice dialpeer inout" for a test call.

Rate all the helpful posts.

Thanks

Manish

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 05:47:45 GMT

Thank you - I've attached the requested ccsip all debugs.

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Ayodeji Okanlawon — Sun, 16 Feb 2014 05:48:04 GMT

Manish,

CUBE is not responding to the proxy authentication request at all...It just sent Service unavailable with cause code 47

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"The essence of christianity is not the enthronement but the obliteration of self --William Barclay"

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 05:51:51 GMT

I've attached the dial-peer debugs as requested - more information if nothing else.

Thank you,

Andrew

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Ayodeji Okanlawon — Sun, 16 Feb 2014 05:56:53 GMT

Okay, the logs show that CUBE cant handle the authentication challenge cucm is sending..

Can you go to cucm and disable digest authentication on your sip security profile for the trunk...lets start from there

004483: Feb 15 23:38:10.368: //3285/5A9EFEB982E8/SIP/Error/sipSPIHandleAuthChallenge: Error getting credentials

004484: Feb 15 23:38:10.368: //3285/5A9EFEB982E8/SIP/Error/act_sentinvite_new_message: Error handling AuthenticationChallenge

004485: Feb 15 23:38:10.368: //3285/5A9EFEB982E8/SIP/State/sipSPIChangeState: 0x4963B838 : State change from (STATE_SENT_INVITE, SUBSTATE_NONE) to (STATE_DISCONNECTING, SUBSTATE_NONE)

004486: Feb 15 23:38:10.368: //3285/5A9EFEB982E8/SIP/Info/ccsip_set_cc_cause_for_spi_err: Categorized cause:47, category:181

004487: Feb 15 23:38:10.368: //3285/5A9EFEB982E8/SIP/Info/sipSPIInitiateDisconnect: Initiate call disconnect(47) for outgoing call

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"The essence of christianity is not the enthronement but the obliteration of self --William Barclay"

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Manish Prasad — Sun, 16 Feb 2014 05:58:52 GMT

Oh.Yes ..Correct....I was just referring to the second "debug ccsip message" after adding the dial-peer in which CUBE respond with callcentric credentials.

I think that has been fixed by removing sip profile from dial-peer.

Thanks

Manish

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 06:06:28 GMT

I checked the default Non Secure SIP Trunk Profile and Enable Digest Authentication isnt checked (I attached screenshots of the sip trunk config for reference).

Thank you,

Andrew

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 06:09:46 GMT

Here are the sip profile screenshots.

Thank you,

Andrew

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Manish Prasad — Sun, 16 Feb 2014 06:17:30 GMT

Can you reset SIP trunk once and then test a call.

Thanks

Manish

Re: Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

whatuusay1 — Sun, 16 Feb 2014 06:24:37 GMT

I reset the trunk and retested (same failure) - I've attached another set of ccsip all debugs (post sip trunk reset).

Thank you,

Andrew

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Manish Prasad — Sun, 16 Feb 2014 06:44:22 GMT

Received:

SIP/2.0 407 Proxy Authentication Required

v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKD58157A;rport=49552;received=24.123.98.94

--------------------------------------------------------------------------------------------------------

Can you also remove session target sip-server from dial-peer 6.

dial-peer voice 6 voip

description ## INBOUND CALL from ITSP ##

session protocol sipv2

session target sip-server

Thanks

Manish

Callcentric SIP Trunk (ITSP --> 2811 CUBE --> CUCM 8.6

Ayodeji Okanlawon — Sun, 16 Feb 2014 15:02:26 GMT

I have taken some time to look in detail into the logs and here is my summary...

When you configure ooutbound-proxy dns:callcentric.com, all outbound SIP request is sent to that domain (call centric.com)

you need to remove the command "outbound-proxy dns:callcentric.com"

the summary below explain why

++receive INVITE from ITSP+++

Received:

INVITE sip:17772253754@192.168.1.203:5060 SIP/2.0

v: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-11f85db5478eab1a1d6560665917bdc9

f: <18165297500>;tag=3601520592-546043

t: <>18452055544@ss.callcentric.com>

i: 3308051-3601520592-546012@msw2.telengy.net

+++Next CUBE sends a trying to ITSP..Before it does that it needs to establish a TCP connection+++

NB: CUBE has sent the call back to ITSP on port 5080, because thats the port used for the incoming connection+++

008382: Feb 16 00:23:12.949: //3342/A5A3315A8319/SIP/Transport/sipTransportLogicSendMsg: Trying to send resp=0x49E83E84 to default port=5080

008383: Feb 16 00:23:12.949: //-1/xxxxxxxxxxxx/SIP/Transport/sipConnectionManagerGetConnection: connection required for raddr:204.11.192.159, rport:5080 with laddr:192.168.1.203

Sent:

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 204.11.192.159:5080;branch=z9hG4bK-11f85db5478eab1a1d6560665917bdc9

From: <18165297500>;tag=3601520592-546043

To: <>18452055544@ss.callcentric.com>

+++Next CUBE needs to send an INVITE out to CUCM+++

NB: The target host and the outbound Host are different...The target host is who the call is for, the outbound host is who the call should be sent through+++

08432: Feb 16 00:23:12.965: //-1/xxxxxxxxxxxx/SIP/Info/sipSPIGetOutboundHostAndDestHostPrivate: CCSIP: target_host : 192.168.1.200 target_port : 5060

008433: Feb 16 00:23:12.965: //-1/xxxxxxxxxxxx/SIP/Info/sipSPIGetOutboundHostAndDestHostPrivate: CCSIP: outbound_host : callcentric.com outbound_port : 5060

++++Because your outbound_host is a dns entry, cube needs to resolve the DNS for the domain+++

008547: Feb 16 00:23:12.981: //-1/xxxxxxxxxxxx/SIP/Event/sipSPIEventInfo: Queued event from SIP SPI : SIPSPI_EV_DNS_RESOLVE

008548: Feb 16 00:23:12.981: //3343/A5A3315A8319/SIP/State/sipSPIChangeState: 0x49630448 : State change from (STATE_IDLE, SUBSTATE_NONE) to (STATE_IDLE, SUBSTATE_SENT_DNS)

+++CUBE does a SRV DNS query (looks like your DNS is configured for SRV++++++++++++

008554: Feb 16 00:23:12.985: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: TYPE SRV query for _sip._udp.callcentric.com and type:1

++++Next DNS server returns all the SRV records for _sip._udp.callcentric.com++++++++

008555: Feb 16 00:23:13.057: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha18.callcentric.com

008556: Feb 16 00:23:13.057: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008557: Feb 16 00:23:13.057: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha19.callcentric.com

008558: Feb 16 00:23:13.057: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008559: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha11.callcentric.com

008560: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008561: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha12.callcentric.com

008562: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008563: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha15.callcentric.com

008564: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008565: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha16.callcentric.com

008566: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008567: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Server Name alpha17.callcentric.com

008568: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Priority 20 Weight 0 Port 5080

008569: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: Selected Server is alpha18.callcentric.com

008570: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_a_query: TYPE A query successful for alpha18.callcentric.com

008571: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_a_query: ttl for A records = 263 seconds

+++Next DNS sends the ip address for the chosen device..204.11.192.170 (alpha18.callcentric.com)++

008572: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: IP Address of alpha18.callcentric.com is:

008573: Feb 16 00:23:13.061: //-1/xxxxxxxxxxxx/SIP/Info/sip_dns_type_srv_query: 204.11.192.170

+++NEXT CUBE sends a UDP connection to 204.11.192.170++++++++++

008620: Feb 16 00:23:13.077: //3343/A5A3315A8319/SIP/Transport/sipSPISendInvite: Sending Invite to the transport layer

008622: Feb 16 00:23:13.077: //3343/A5A3315A8319/SIP/Transport/sipSPITransportSendMessage: msg=0x4A9AEC54, addr=204.11.192.170, port=5080, sentBy_port=0, local_addr=192.168.1.203

008626: Feb 16 00:23:13.077: //-1/xxxxxxxxxxxx/SIP/Transport/sipCreateConnHolder: Created new holder=0x4A9B0760, addr=204.11.192.170; nailed=FALSE

008627: Feb 16 00:23:13.077: //-1/xxxxxxxxxxxx/SIP/Transport/sipTransportPostRequestConnection: Posting UDP conn create request for addr=204.11.192.170, port=5080, context=0x4840BD14

+++CUBE succesfully created a connection with 204.11.192.170+++++++++++

008638: Feb 16 00:23:13.081: //-1/xxxxxxxxxxxx/SIP/Transport/sipConnectionManagerProcessConnCreated: connection instance created for addr:204.11.192.170, port:5080 local_addr=192.168.1.203 local_port=49552

Next CUBE procceeds to send an outbound INVITE

008646: Feb 16 00:23:13.081: //3343/A5A3315A8319/SIP/State/sipSPIChangeState: 0x49630448 : State change from (STATE_IDLE, SUBSTATE_NONE) to (STATE_SENT_INVITE, SUBSTATE_NONE)

++++++++++++but the INVITE appears to go to cucm when infact it wasnt sent there..it was sent to ITSP!!!!!!!!!!

Sent:

INVITE sip:17772253754@192.168.1.200:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKD58157A

From: <>18165297500@callcentric.com>;tag=B46262C-230A

To: <17772253754>

++++NEXT we get a response back from your ITSP requesting authentication++++++++

008670: Feb 16 00:23:13.181: //-1/xxxxxxxxxxxx/SIP/Info/ccsip_new_msg_preprocessor: Checking Invite Dialog

008671: Feb 16 00:23:13.181: //3343/A5A3315A8319/SIP/Msg/ccsipDisplayMsg:

Received:

SIP/2.0 407 Proxy Authentication Required

v: SIP/2.0/UDP 192.168.1.203:5060;branch=z9hG4bKD58157A;rport=49552;received=24.123.98.94

f: <>18165297500@callcentric.com>;tag=B46262C-230A

t: <17772253754>

i: A5AF6643-960911E3-831FFFD7-951695DD@callcentric.com

CSeq: 101 INVITE

Proxy-Authenticate: Digest realm="callcentric.com", domain="sip:callcentric.com", nonce="b69582701157bab55830417b7b62def9", opaque="", stale=TRUE, algorithm=MD5

l: 0

So, even though it looks like the call was sent to cucm, it was never sent to CUCM, it was sent to ITSP for onward forwarding to CUCM!!!!!!!!!!!!!!!!

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"The essence of christianity is not the enthronement but the obliteration of self --William Barclay"