SRST phone are not being register.

[elizabeth.turmel1]

Hi Guys,

I am trying to get my SRST remote site to work when the WAN failed. I was testing it tonight and it is not working.

I pretty much followed this procedure : https://supportforums.cisco.com/document/98721/how-implement-cisco-unified-srst-and-mgcp-fallback + another procedure user guide from the CISCO website.

I have used a line FXO which I have put at the back of the CISCO 2921 that we are using.

The phone stayed in registered mode. I can see on the phone that the first CM is my CUCM at the main office and the second CM is my SRTS device .

My config  looks like this:

voice service voip
 ip address trusted list
  ipv4 6.14.4.4.0 255.255.255.0
  ipv4 6.15.1.0 255.255.255.0
 allow-connections sip to sip
 no supplementary-service sip refer
 fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
 h323
  no h225 timeout keepalive
  call preserve
 sip
  bind control source-interface GigabitEthernet0/1
  bind media source-interface GigabitEthernet0/1
  registrar server expires max 600 min 60
!
voice class codec 1
 codec preference 1 g711ulaw
 codec preference 2 g722-64
!
voice class h323 1
  h225 timeout tcp establish 3
!
!
!
voice class server-group 1
 ipv4 6.14.5.12 preference 1
 ipv4 6.14.5.1 preference 2
!
!
voice register global
 mode esrst
 system message "EN MODE SURVIE"
 max-dn 10
 max-pool 100
 timezone 13
!
voice register pool  1
 busy-trigger-per-button 2
 id network 6.15.1.0 mask 255.255.255.0
 type 7841
 preference 2
 incoming called-number .
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad
!
!
!
!
!
!
application
 global
  service alternate default
 !
!
hw-module ism 0
!
hw-module pvdm 0/0
!
!

!
redundancy
!
!
!
!
!
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
 no mop enabled
!
interface ISM0/0
 no ip address
 shutdown
 !Application: CUE Running on ISM
!
interface GigabitEthernet0/1
 ip address 6.15.1.2 255.255.255.0
 ip helper-address 6.15.1.1
 duplex auto
 speed auto
 h323-gateway voip interface
 h323-gateway voip bind srcaddr 6.15.1.2
!
interface GigabitEthernet0/2
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface ISM0/1
 description Internal switch interface connected to Internal Service Module
 no ip address
 shutdown
!
interface Vlan1
 no ip address
 shutdown
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
ip http path flash0:
!
ip route 0.0.0.0 0.0.0.0 6.15.1.1
!
!
!
!
!
!
control-plane
!
call fallback active
!
voice-port 0/0/0
!
voice-port 0/0/1
!
voice-port 0/2/0
 signal cama KP-0-NPA-NXX-XXXX-ST
!
voice-port 0/2/1
!
voice-port 0/2/2
!
voice-port 0/2/3
 !
 !
 !
 !
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
!
ccm-manager fallback-mgcp
!
dial-peer voice 1 pots
 description PSTN-emergency dial 9 first
 destination-pattern 9911
 port 0/2/3
 forward-digits 3
!
dial-peer voice 2 pots
 description PSTN-emergency
 destination-pattern 911
 port 0/2/3
 forward-digits all
!
dial-peer voice 3 pots
 description PSTN-Local services
 destination-pattern 9[2-8]11
 port 0/2/3
 forward-digits 3
!
dial-peer voice 4 pots
 description PSTN-Long distance Dialing
 destination-pattern 91[2-9]..[2-9]......
 port 0/2/3
 forward-digits 11
!
dial-peer voice 5 pots
 description PSTN-International Dialing
 destination-pattern 9011T
 port 0/2/3
 prefix 011
!
dial-peer voice 6 pots
 description TestTelEli
 destination-pattern 94184545555
 port 0/2/3
 forward-digits 10
!
dial-peer voice 7 pots
 description TestTelEliPattern
 destination-pattern 4184545555
 port 0/2/3
 forward-digits all
!
!
!         
!
gatekeeper
 shutdown
!
!
call-manager-fallback
 max-conferences 8 gain -6
 transfer-system full-consult
 ip source-address 6.14.1.2 port 2000
 max-ephones 100
 max-dn 200
 keepalive 20

In my CUCM I have configure the 6.15.1.2  as the IP with the right ports. I am testing over a VPN.

The device pool have the configuration SRST activated.

It feels the phone is not even trying to communicate with the SRST. It keeps registering in a cercle.

Please help.

[johnd2310]

Hi,

You srst config is using " ip source-address 6.14.1.2 port 2000" but you have configured 6.15.1.2  in your call manager and your Gi0/1 is also 6.15.1.2. Can you check if this is correct.

Thanks

John

[elizabeth.turmel1]

Hi Jon,

I confirm I have used ip source-addres 6.15.1.2 port 2000. (Typo error from my end)

I confirm I have set the IP addresss of the gi 0/1 6.15.1.2

My SRST in my CUCM is configured with port 2000 IP 6.15.1.2

I have opened all ports toward the CUCM so port 2000 is open.

I have looked at one my phone this morning in HTTP. Even tough yesterday I was seeing the Unified CM3 as my CUCM and Unified CM4 as my SRST within the telephone settings, this morning I am not seing it within the WEB app.

the CUCM is configured with the SRST reference within SYSTEM named gira_gw.mydomain.com

The IP address is correct as confirmed above.

We had configured a device pool named "Gira" with a SRST Reference with the name of the SRST reference.

The DNS resolve correctly gira_gw.mydomain.com.

I have seen within the phone settings on HTTP that no domain name was entered. Could it be it? Perhaps we need to add a DHCP option in order for the phone to know the right Domain name?

Your toughts would be much appreciated.

Many Thanks

Elizabeth