Cisco UMG 8.6.1 and Cisco SRST 8.8 or 9.0 compatibility?

[igor.good]

Hi!

We have a customer who'd like to deploy 600 phones (3905) at their remote office. I can see that for classic SRST the max capacity for 3945 router is limited to 350 phones which is not enough in the current situation but for E-SRST the number is 1200. As it is know Cisco UMG is needed for deploying E-SRST. However the 3905 phone is supported starting with CME/SRST version 8.8. The latest version for Cisco UMG is 8.6.1 and I can't find any info about its compatibility with CME/SRST 8.8 or higher. Could somebody help me out and clear the situation? If it is not compatible then we'll have to persuade or customer to buy two 3945s.

Thanks!

[Chris Deren · Accepted solution]

Where do you see that only 350 phones are supported for SRST? It is 1200:

http://www.cisco.com/en/US/partner/prod/collateral/routers/ps10536/data_sheet_c78_553924.html

350 is for CME not SRST.

HTH,

Chris

[igor.good]

Thank you, Chris!

I've read this document a couple of times:

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2169/data_sheet_c78-678873.html

And everytime I read it I somehow thought that the column for E-SRST is actually for SRST - hence my confusion. You've saved my day!

Thanks again!