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CME 11.6 - SIP phones with tcp session-transport trying to register with ITSP even with no-reg set

Hi there,

We're having an issue with our CME 11.6 install... we are trying to configure the system so that voice register dn's will not register with our ITSP.  This was all working fine until we configured the Mobility services for SNR... which requires the phones to use TCP.

When we have our voice register pool session-transport set to TCP... the primary DN will not register with the ITSP (all good), BUT any secondary lines on the same phone will... regardless of if no-reg is set on the DN or not.  Again, this is only happening when session-transport is set to TCP.

Has anyone else experience this?

Here's some relevant config details:

voice service voip
ip address trusted list
ipv4 x.x.x.x
ipv4 y.y.y.y
ipv4 z.z.z.z
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
sip
registrar server expires max 600 min 60
midcall-signaling passthru media-change
!

voice register global
mode cme
source-address 10.0.1.1 port 5060
no outbound-proxy
max-dn 20
max-pool 5
load 7961 SIP41.9-4-2SR1-1S
load 8851 sip88xx.11-7-1-17
authenticate register
timezone 12
time-format 24
date-format D/M/Y
hold-alert
dst start Mar week 2 day Sun time 02:00
dst stop Nov week 1 day Sun time 02:00
voicemail 5000
file text
create profile sync 0028337159823515
ntp-server 10.0.1.1 mode unicast
auto-register
!
!

voice register dn 1
number 2001
call-forward b2bua busy 5000
call-forward b2bua noan 5000 timeout 20
call-forward b2bua unregistered 5000
allow watch
pickup-call any-group
pickup-group 1
no-reg
mwi
!
voice register dn 2
number 2002
call-forward b2bua busy 5000
call-forward b2bua noan 5000 timeout 20
call-forward b2bua unregistered 5000
allow watch
pickup-call any-group
pickup-group 1
no-reg
mwi
!
voice register dn 5
number 2020
shared-line max-calls 6
no-reg
!

voice register template 1
button-layout 1-3 line
button-layout 4-6 blf-speed-dial
softkeys idle Redial Newcall Pickup DND Mobility Cfwdall
softkeys connected Hold Endcall Trnsfer Mobility Park
!

voice register pool 1
busy-trigger-per-button 2
id mac 5006.AB09.6754
session-transport tcp <--- if we remove this...
type 8851
number 1 dn 1
number 2 dn 5
template 1
dialplan 1
presence call-list
dtmf-relay rtp-nte
username 2001 password 2001
codec g711ulaw
paging-dn 1
!
voice register pool 2
id mac 001D.A2B7.C023
session-transport tcp <--- ...and this... then DN 5 stops trying to register with our ITSP
type 8851
number 1 dn 2
number 2 dn 5
template 1
dialplan 1
dtmf-relay rtp-nte
username 2002 password 2002
codec g711ulaw
paging-dn 1
!

sip-ua
credentials username ########## password 7 XXXXXXXXXXXXXXXX realm ourprovider.com
authentication username ######### password 7 XXXXXXXXXXXXXXXX realm ourprovider.com
mwi-server ipv4:10.0.1.2 expires 3600 port 5060 transport udp
registrar 1 dns:sip05.ourprovider.com expires 60
presence enable
!

Without TCP transport:

Router#show sip-ua register status
--------------------- Registrar-Index 1 ---------------------

Line peer expires(sec) reg survival P-Associ-URI
================================ ========== ============ === ======== ============
########## -1 14 yes normal

With TCP transport:

Router#show sip-ua register status
--------------------- Registrar-Index 1 ---------------------

Line peer expires(sec) reg survival P-Associ-URI
================================ ========== ============ === ======== ============
2020 40006 116 no normal
########## -1 59 yes normal

Any help on this would be greatly appreciated.  

4 Replies 4

Just bumping this... anyone got any ideas??

For anyone coming across this... I figured it out.  Had to add `session transport tcp` under voice service voip like so:

voice service voip
ip address trusted list
ipv4 x.x.x.x
ipv4 y.y.y.y
ipv4 z.z.z.z
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
sip
session transport tcp
registrar server expires max 600 min 60
midcall-signaling passthru media-change
!

Thx for sharing it.

FYI, SNR doesn't require TCP. You can run it on UDP as well.

SNR will work without TCP, but the mobility soft key will not, so you can't send a call to your mobile phone or pull it back.  At least it didn't work for us over UDP.