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New Member

Unity and SRST

I reviewed a recent SRST update document located at (watch word wrap):


I am trying to understand if this update in fact allows Unity to be used in

a SRST environment with IOS 12.2.11YT release.

I have not seen anything in the Unity 3.x release notes about this new


The article can be interpreted as Unity can be used with SRST and/or it can

also be used with legacy voice mail systems via analog.

The only drawback appears to be a lack of MWI.

Can Unity 3.x be used succesfully with SRST. How do you associate the

SRST gateway with Unity (as a redundant CCM in the TSP perhaps)?

--- Thanks ---


Re: Unity and SRST

After reading this doc (my first time too) it looks like SRST 2.1 only supports an analog integration with Unity or any other PBX.

A Skinny (SCCP) integration is what I believe your looking for but this isn't it. I have spoke with product marketing about adding this type of support into the Unity TSP (changes need to be made in SRST too) but nothing is planned yet.


Cisco Employee

Re: Unity and SRST

The guide above specifies that this is with *centralized* voicemail. I.e. phones go into SRS mode, they can hit messages and get their personalized greeing.

This is *not* where Unity can reside at the remote site and register with an SRS gateway.

MWI is an issue, as mentioned.

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