3845 Hardware

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Jonathan Schulenberg Tue, 07/14/2009 - 08:54

A 3845 only supports two EVM modules per chassis. You'll also need to carefully plan your DSP resources to ensure you have enough.

Supporting documentation:


EVM-HD Slots: Extension Voice Module - High-Density

-The EVM-HD has the same form factor as a regular NM1

-EVM-HD offers additional voice services and higher density for in a module format.

-EVM-HD slot can take advantage of the PVDMs on the motherboard to

provide service to voice interfaces.

-The dedicated EVM slots on the 2821 and 2851 cannot accept NM/NME modules.

On the 3825, 1 EVM module is allowed in either of the 2 NME slots. On the 3845, 2 EVM modules are allowed in either of the 4 NME slots.

Jonathan Schulenberg Tue, 07/14/2009 - 09:44

The EVM supports up to 24 FXS ports so you could get up to 48 ports in a 3845 chassis.


For that density within a single chassis you would probably need to look at the AS5400 series chassis with an external demuxer to down-step from the T1 to individual FXS ports. I wouldn't recommend this approach though. I would just use multiple chassis.

pbruno1968 Wed, 05/05/2010 - 05:50

Is there a way to bulk add these ports into CUCM for this type of gateway (3845)?


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