SRST issue, missing extension numbers.

Answered Question
Nov 25th, 2008

Hi, I have an issue with Callmanager 6.1 and 7942`s and 7945`s using SRST version 3.3 on a 2801 router.

The phones fall back into SRST mode, but the phones lose their extension numbers, so are unable to make and receive calls.

From the compatibility docs, Cisco produce it would appear that version 3.3 does not support these phone models.

Does this mean a complete IOS upgrade to get the updated SRST or can you download some kind of component?

Hope you can help.

I have this problem too.
0 votes
Correct Answer by allan.thomas about 8 years 1 month ago

For IP Phone support in SRST for the 7942 and 7945 you will require at least SRST version 4.1.

Refer the SRST 4.1 Product Reference Guide:-

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2169/product_data_sheet0900aecd805e1e79.html

In particular, please refer to Table 7 of this document, it details which SRST version is available with a specific release of IOS. In your case v4.1 is available for release 12.4(14)T.

You may also find this document helpful, is various FAQs about SRST:-

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2169/prod_qas0900aecd8028d113.html

Hope this helps

Allan.

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Correct Answer
allan.thomas Tue, 11/25/2008 - 01:59

For IP Phone support in SRST for the 7942 and 7945 you will require at least SRST version 4.1.

Refer the SRST 4.1 Product Reference Guide:-

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2169/product_data_sheet0900aecd805e1e79.html

In particular, please refer to Table 7 of this document, it details which SRST version is available with a specific release of IOS. In your case v4.1 is available for release 12.4(14)T.

You may also find this document helpful, is various FAQs about SRST:-

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2169/prod_qas0900aecd8028d113.html

Hope this helps

Allan.

allan.thomas Tue, 11/25/2008 - 12:55

Hi Norman, it was no trouble at all, thanks for the appreciation. All the best.

Allan.

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