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New Member

SRST Configuration

Dear Experts,

Attached is the configuration for the router who is acting as SRST for CUCM 9.1. SCCP phones get registered when connection is lost with CUCM but sip phones(3905) doesn't.

Do i need to enable a telephony service on the SRST router for the SIP phones to register.

Thanks

 

1 ACCEPTED SOLUTION

Accepted Solutions

SRST references have two

SRST references have two address fields in CUCM - one for SCCP and other for SIP. Are you sure that both are populated is my question?

Please rate useful posts.
11 REPLIES
Cisco Employee

Have you configured SIP SRST?

Have you configured SIP SRST??? The SRST configuration guides covers both, SCCP and SIP, this has been discussed very recently with some examples on CSC you can easily find.

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
New Member

Dear Jaime,You are the expert

Dear Jaime,

You are the expert in CSC, that's the reason i posted my configuration, did you see anything missing in the configuration,

 

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/admin/sccp_sip_srst/configuration/guide/SCCP_and_SIP_SRST_Admin_Guide.html

please suggest.

Thanks

Did you populate the SIP

Did you populate the SIP address in the SRST reference on CUCM?

Please rate useful posts.
New Member

Dear George,Yes it is already

Dear George,

Yes it is already done my 7942 phones fallback to srst mode but 3905 doesnt,

just referring the compatibility of firmware on the phone when they fallback on the srst mode.On SRST the firmware supported is 9.2 for 3905 phones and for 7942 phones is SCCP42.9-2-1S.loads.  And on  CUCM 10.5 they are running on 3905 9.4 and 7942 SCCP42.9-3

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/requirements/guide/srs91spc.html

7942 SCCP phones fall back to srst mode without any issue, but sip phones do not, if for some moment we think for firmware compatibility issue then that shld affect to 7942 phones as well

SRST references have two

SRST references have two address fields in CUCM - one for SCCP and other for SIP. Are you sure that both are populated is my question?

Please rate useful posts.
New Member

Dear George,Attached is the

Dear George,

Attached is the snap shot.

Why is it set to 93.0 and not

Why is it set to 93.0 and not 93.5? On both CUCM and GW.

Please rate useful posts.
New Member

Dear George,what i thought

Dear George,

what i thought that i have to specify the sip phones network and not the SRST router ip address, i have change to SRST ip address 192.168.93.5 and will reply back to you in 5 min

New Member

Dear expert,thanks sip phones

Dear expert,

thanks sip phones fall-back  to srst mode,

Thanks for the rating and

Thanks for the rating and good luck!

Please rate useful posts.
New Member

Experts,SIP phones are

Experts,

SIP phones are registered in srst mode but there is no calling between sip to sip 3905 phones and also there is no dial-tone on the phones. i see a exclamation (!) mark beside the extension on the phone.

Thanks

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