[cisco-voip] pros, cons, and recommendations

[Brown, Matthew A.]

My organization is preparing to move from a traditional PBX to a Cisco
IPC system and has been given contradicting recommendations for certain
equipment by different potential vendors.  What are your pros, cons, and
recommendations for these pieces:

Gateway between internal network and PSTN:
2 Cat6500 Communications Media Modules (installed in separate core
6500s) w/ 6-port T1 adapter
vs.
2 3845 ISR voice bundles w/ 3 PVDM2-64 DSPs, 2 2-port T1 VWICs, and 2
4-port FXO VICs each 

CallManager servers:
MCS-7825 v. MCS-7835

Our environment will have 675 phones at time of install with projected
growth of 250 phones in the next 5 years, and 4 T1s for PSTN interaction
(2 DID, 1 WAT, 1 other).  Important to our consideration are redundancy,
performance, ease of configuration and management, scalability, and
cost.

TIA,

Matthew Brown
High Point University
 




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