MCS server for CUCM 8.5 - (1800 IP phones)

Unanswered Question
Apr 27th, 2012


I am responsible for a branch office with 1800 IP phones. We reach the Hub-data center CUCM 8.5 via MPLS and SIP Trunking circuit (DS3). I have no backup circuit in this region except access to POTS lines.

In the event the MPLS circuit and SIP trunking goes down the hill I need to provide the hardware and pay licenses to allow survivability.

Imagine I need to spec an appliance to run CUCM 8.5 to provide a  backup to get voice services.

I am considering the MCS Server 7835 (it supports up to 2500 users/Ip phones) according to Table 8-3 listed below.


In addition to the MCS server and CUCM, what type of gateway or device you guys would recommend in this scenario so that I could connect the POTS lines to? From there I believe the MCS 7835 CUCM would reach the PSTN in the event the MPLS & SIP circuit goes down.



I have this problem too.
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Gordon Ross Fri, 04/27/2012 - 22:17

Well, it depends exactly what you want !

This lists the basic gateways you can choose from. Then you'll need to add on the physical interface you want (e.g analogue, ISDN, etc) Don't forget that you'll need PVDM modules too!

This may help too:



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