[cisco-voip] Voicemail in SRST Mode

[Linsemier, Matthew]

Again thanks for the additional information.  Because I don't want to
solely limit myself to MGCP knowledge, does the same go for H.323 other
then RDNIS has to be enabled at the gateway rather than in CCM.

 

From: Justin Steinberg [mailto:jsteinberg at gmail.com] 
Sent: Tuesday, May 08, 2007 10:08 AM
To: Linsemier, Matthew
Subject: Re: [cisco-voip] Voicemail in SRST Mode

 

no, DID will not cause any problem.  The extension of the SRST phone is
used as the redirecting number.  Hopefully, your extension is the last
3,4, or 5 digits of your DID.

Easiest way to understand how this works is to do a 'debug isdn q931'
while in SRST mode and place a call from the outside to an IP phone and
watch the outbound fwd leg to unity. 

On 5/8/07, Linsemier, Matthew <MLinsemier at apcapital.com> wrote:

Justin,

 

Thanks for the response.  I also should have mentioned that we have DID
at all of our sites.  From what you are saying, it sounds like this
could cause problems because there would be no redirecting number?

 

Matt

 

From: Justin Steinberg [mailto:jsteinberg at gmail.com] 
Sent: Tuesday, May 08, 2007 9:55 AM
To: Linsemier, Matthew
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Voicemail in SRST Mode

 

If you have a PRI at both the SRST & Unity site the easiest integration
is using RDNIS.  However, not all Telco providers support end to end
RDNIS.  Check to see if yours does by debugging q931 on both your SRST
site and your Unity site. 

You will see a debug similiar to below when the SRST router forwards the
call to 

Calling Party Number i = 0x0081, '5555553435'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '15555551212' 
Plan:Unknown, Type:Unknown 
Redirecting Number i = 0x000082, '1001'
Plan:Unknown, Type:Unknown 

Where 5555553435 is a PSTN caller who is calling SRST extension 1001 and
the call is forwarded to Unity pilot 5555551212.

You should then perform the same debug on the Unity PRI gateway to see
if the RDNIS comes through, if so then you just need to make sure the
RDNIS number matches the Unity extension and via ccmadmin enable inbound
RDNIS on the MGCP T1 PRI at the Unity site 

If your Telco doesn't support RDNIS then you will have to use
vm-integration which is typically used for FXO lines but can also be
used for pri.

Justin

On 5/8/07, Linsemier, Matthew <MLinsemier at apcapital.com> wrote:

Currently we are running CallManager 4.1(3)sr3 along with Unity 4.2(1).
We currently are using MGCP to control all of our gateways from a
centralized cluster and utilize SRST at remote sites for failover.   I
was wondering if anyone has been successful, while in SRST mode, of
redirecting an inbound call after a set amount of rings to their
voicemail server, and have the subscribers message play rather than the
main Unity greeting.  We are using ISDN PRI at our remote sites. I know
that there were some commands that you could configure to send digits to
the Unity server, but from what I understand those were only supported
in a analog configuration.

 

Below is a excerpt of my call-manager fallback config:

 

call-manager-fallback

  voicemail 91517xxxxxxx

 call-forward busy 91517xxxxxxx

 call-forward noan 9517xxxxxxx timeout 12

 

Any help would be greatly appreciated.

 

Matt

 

 

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