topic Hello Monzer, Could you in Unified Communications Infrastructure

SIP configuration in SRST ver 15.1 (3T)

gsidhu — Tue, 19 Mar 2019 09:43:07 GMT

Customer has SCCP phones and 8961 SIP phones.

I'm testing SRST today on a Cisco 3925 running the very latest IOS (version c3900-universalk9-mz.SPA.151-3.T.bin

I noticed that this version does not support all of the commands/syntax provided in the documentation.

Please could somebody have a look at the configuration below and let me know if it should work or if there is anything that I need to add.

I've not worked with SIP phones in SRST mode so I would really appreciate a response back today (hopefully before the testing!).

Thanks

voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip

voice register pool 10
id network 172.26.10.0 mask 255.255.0.0
dtmf-relay rtp-nte cisco-rtp sip-notify
codec g711ulaw
no vad
!
voice register pool 11
id network 172.26.11.0 mask 255.255.0.0
dtmf-relay rtp-nte cisco-rtp sip-notify
codec g711ulaw
no vad
!

sip-ua
registrar ipv4:172.26.10.240 expires 600

(172.26.10.240 is the SRST gateway IP address).

On UCM SRST reference configuration for gateway

SIP Network/IP Address 172.26.10.240

SIP Port 5060

SIP configuration in SRST ver 15.1 (3T)

gthakkar — Tue, 19 Jul 2011 23:59:15 GMT

Any one tested this configuration?

Thanks

SIP configuration in SRST ver 15.1 (3T)

gsidhu — Wed, 20 Jul 2011 05:28:11 GMT

I have got this working

There is an error in the subnet mask under both voice register pools and under

voice service voip you also need to add:

sip

registrar server expires max 600 min 60.

Here is the amended template:

voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip

sip

registrar server expires max 600 min 60

voice register pool 10
id network 172.26.10.0 mask 255.255.255.0
dtmf-relay rtp-nte cisco-rtp sip-notify
codec g711ulaw
no vad
!
voice register pool 11
id network 172.26.11.0 mask 255.255.255.0
dtmf-relay rtp-nte cisco-rtp sip-notify
codec g711ulaw
no vad
!

sip-ua
registrar ipv4:172.26.10.240 expires 600

(172.26.10.240 is the SRST gateway IP address).

Don't forget on UCM SRST reference configuration for gateway:

On UCM SRST reference configuration for gateway

SIP Network/IP Address 172.26.10.240

SIP Port 5060

Please rate helpful posts.

So the 8961 SIP Phones ended

tarek issa — Sat, 19 Jul 2014 17:50:04 GMT

So the 8961 SIP Phones ended up working in SRST mode ??
Thanks

Yes it did.....

gsidhu — Sun, 20 Jul 2014 19:22:55 GMT

Yes it did.....

Thanks for your reply :)Can

tarek issa — Wed, 23 Jul 2014 14:52:43 GMT

Thanks for your reply 🙂
Can you also state the Phone loads versions used ?

Thanks in advance

It would have been the

gsidhu — Wed, 23 Jul 2014 15:27:28 GMT

It would have been the default phone load provided with CUCM version 8.0.2.40000-1/UCOS version 8.0(2c)

This was more than 3 years ago and unfortunately I don't have a record of the phone load version provided with this CUCM version.

Note you don't need to specify phone load for SRST; this only applies to CME.

For example...

telephony-service
srst mode auto-provision none
srst dn line-mode dual
max-ephones 265
max-dn 600
ip source-address 172.26.9.100 port 2000
max-redirect 20
no service directed-pickup
timeouts interdigit 5
system message Backup Phone System
time-zone 13
time-format 24
dialplan-pattern 1 +1312822.... extension-length 4 demote
max-conferences 2 gain -6
call-forward pattern .T
moh music-on-hold.au
multicast moh 239.1.1.1 port 16384 route 172.26.9.100 192.168.1.1
transfer-system full-consult
transfer-pattern .T
create cnf-files version-stamp 7960 Dec 01 2011 00:47:13
!

good answer its working with

Monzer Allam — Mon, 13 Oct 2014 09:38:42 GMT

good answer its working with me on phone 7821

thanks a lot

Hello Monzer, Could you

apanesar — Wed, 15 Oct 2014 15:40:54 GMT

Hello Monzer,

Could you please share your configuration for SIP SRST on cisco 2901 router. Also what version IOS do you have. Thank you

Amerjit

Hello gsidhu,One question

Guillermo_87 — Wed, 20 May 2015 20:39:15 GMT

Hello gsidhu,

One question:

This configuration is not necessary add for sip srst ?

voice register global
mode srst
timeouts interdigit 5
system message "Modo SRST"
max-dn 40
max-pool 40

Regards

Hi,

mukchand — Thu, 06 Jul 2017 12:56:12 GMT

Hi,

I have to configure SRST for SIP IP Phones. I am using cisco 2921 router. I want to do it for testing purpose. I am not having any remote site. I have to do on the same gateway which is on the same network that of cucm. can anyone tell from basic configuration i have to do configure SRST properly in my setup. If you need more information pls ask.

Thanks in advance!

Hello Sidhu,

Jayadurai Chelladurai — Fri, 04 Aug 2017 05:21:04 GMT

Hello Sidhu,

The below commands are not in your configuration for SIP SRST,

voice register global
mode srst
timeouts interdigit 5
system message "Modo SRST"
max-dn 40
max-pool 40

Is this not required?

Thanks!

Re: Hello Sidhu,

kassethi — Thu, 12 Oct 2017 22:53:36 GMT

Max-pool and Max-dn are mandatory when you are configuring a voice register pool. Without adding max-pool and max-dn, the router would not allow you to add the voice register pool 1 and throw the following error

Pool tag too large, maximum 0

Please rate all the helpful posts.

Hello Guillermo

kassethi — Thu, 12 Oct 2017 22:55:52 GMT

This configuration is mandatory to add the SIP Phones for SRST. Without the commands that you have mentioned here, the router would not allow you to add the voice register pool and throw the following error:

#voice register pool 1
Pool tag too large, maximum 0

Please rate all the helpful posts.

Re: Hello Sidhu,

Roman Orozco — Tue, 21 Aug 2018 15:39:17 GMT

Hello there guys,

Is there any other way to register SRST Gw SIP server than SIP-UA?

In this moment I have a SIP trunk For PSTN calls contracted with my carrier.

SRST is not working I have this configuration :

sip
bind control source-interface GigabitEthernet0/2
bind media source-interface GigabitEthernet0/2
registrar server expires max 3600 min 120
transport switch udp tcp

!
voice register global
no fac refer
system message SRST SPconnet
max-dn 10
max-pool 5
timezone 9
!
voice register pool 1
id network 172.16.20.0 mask 255.255.255.0
application sip.app
dtmf-relay rtp-nte
codec g711alaw

(this is the sip server for outbound calls)

sip-ua
no remote-party-id
retry invite 2
retry register 10
timers connect 100
registrar ipv4:10.**.12*.**:50** expires 1800
sip-server ipv4:10.**.12*.**:50**
connection-reuse
host-registrar
presence enable

on CUCM I have already configure the IP of the SRST Gateway for SCCP and SIP :

SRST Reference Information

Name
Port
IP Address
SIP Network/IP Address
SIP Port
SRST Certificate Provider Port	2445

Thank you