[cisco-voip] transcoding on srst gw

Thu Jan 26 21:01:40 EST 2006

With PRIs, 'application mgcpapp' isn't needed on the
PRI pots dial-peers. There is a bug id documenting
this (I would need to dig through my notepad to find
it if you need it). This changed in 12.3T at some
point. Analog endpoints work differently (no
signalling channel that can be backhauled to call
manager). 12.3(14)T and higher, application mgcpapp
was replaced with service mgcpapp and global
application config section. You would need pots
dial-peer with PRI port under them if you were using
PRI in fallback/SRST though.

--- Philip Walenta <pwalenta at wi.rr.com> wrote:

> I noticed that the normal dial-peers with
> "application MGCPAPP" disappeared
> I think when I first put 12.3 on a router.  Is it
> possible MGCP with
> config-download now tucks itself on the default
> peer?
> 
> 
>   _____  
> 
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On
> Behalf Of Kevin Thorngren
> Sent: Thursday, January 26, 2006 7:03 PM
> To: James Grace
> Cc: CiscosupportUpuck <cisco-voip at puck.nether.net>
> Subject: Re: [cisco-voip] transcoding on srst gw
> 
> 
> I responded too quickly, too late in the evening :-)
> The default dial peer
> is matched for inbound calls. Try using "debug voip
> ccapi inout" to see what
> is happening with the call. Maybe we can take a look
> at this along with your
> config (sanitize as needed).
> 
> Kevin
> On Jan 26, 2006, at 7:53 PM, Kevin Thorngren wrote:
> 
> 
> 
> You are matching the default dial peer which is
> hidden. Please read the
> following:
>
http://www.cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a00801
> 0fed1.shtml
> 
> Kevin
> On Jan 26, 2005, at 5:57 PM, James Grace wrote:
> 
> 
> 
> 
> Ok   well the concern is that all call are working
> fine. Even thou we do not
> see the dialpeer.  So we are clueless on how calls
> are going out with out
> the dial peer.  We know that they are going out the
> right gw but doing
> debugs q931 921
>  
> 
> From: Voll, Scott [mailto:Scott.Voll at wesd.org]
> Sent: Thursday, January 26, 2006 5:21 PM
> To: James Grace
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> I think your other engineer is right.  But I don't
> have any doc's to back it
> up.
>  
> I know on my 3640 with PRI I put in a pots dial peer
> of  9991024 as my PRI
> is in slot1 port 0.
>  
> dial-peer voice 9991024 pots
>  destination-pattern 9T
>  incoming called-number .
>  direct-inward-dial
>  
> I do remember manually putting it in. 
>  
> Scott
>  
> Sorry, it's been years.
>  
> 
> From: James Grace [mailto:jgrace at digitelusa.net] 
> Sent: Wednesday, January 26, 2005 10:48 AM
> To: Voll, Scott
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> Hey Voll you seem to have all the answers.  So I
> thank you for all the
> help..   I have a question that me and another
> engineer have a issue with.
> Can you explain to me or help me understand why   on
> a mgcp gw,  we do not
> see a dial peer in the config for the pri endpoint (
> like you would see
> after confuring fxo and fxs end points in cm)  and
> how would I explain why
> there isn't suppose to be one in the cli conf.  my
> other engineer seems to
> thing that you should add one manully to the cli gw
>  
> 
> From: Voll, Scott [mailto:Scott.Voll at wesd.org]
> Sent: Thursday, January 26, 2006 12:19 PM
> To: James Grace
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> But is the conference calling resource at the remote
> site or the central
> site.  If it's at the central site then the
> transcoding is just need at the
> central site.  Now if the conference calling
> resource is at the remote site,
> yes you will need transcoding at the remote site.
>  
> Scott
>  
> 
> From: James Grace [mailto:jgrace at digitelusa.net] 
> Sent: Wednesday, January 26, 2005 8:56 AM
> To: Voll, Scott
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> Yes we are doing conf call internal at the srst and
> conf calling between the
> srst and main. 
>  
> 
> From: Voll, Scott [mailto:Scott.Voll at wesd.org]
> Sent: Thursday, January 26, 2006 11:36 AM
> To: James Grace
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> James-
>  
> You are going to setup regions to your remote sites
> so you can use G729.
> That I understand.  Do you have some kind of
> resource at the remote site
> that only does G711 that you're other sites need to
> get too?  That would be
> the only reason I can think of for needing
> transcoding resources at the
> remote site. 
>  
> I have transcoding resources at the central site
> because I have IPCCx that
> only does G711.  So if a remote site is using G729
> the central site
> transcodes it to G711 so they can make the call to
> the IPCCx pilot point.
>  
> Are you doing conferencing calling resources at the
> remote site that would
> require transcoding at the remote site?
>  
> Scott
>  
>  
>  
> 
> From: James Grace [mailto:jgrace at digitelusa.net] 
> Sent: Wednesday, January 26, 2005 8:25 AM
> To: Voll, Scott
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> First thanks for the reply
>  
> I was told that i need to set up region for srst
> with codec 7.29 and set up
> transcoding on the srst gw to dedicate a few dsp fo
> r transcoding
>  
> 
> From: Voll, Scott [mailto:Scott.Voll at wesd.org]
> Sent: Thursday, January 26, 2006 11:03 AM
> To: James Grace; cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] transcoding on srst gw
>  
> What is the reason for having transcoding on your
> SRST gw?
>  
> If your in SRST you would be using the PSTN. 
>  
> Scott
>  
> 
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On
> Behalf Of James Grace
> Sent: Wednesday, January 26, 2005 7:37 AM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] transcoding on srst gw
>  
> I was told that I need to configure transcoding on
> my srst gw. And not sure
> way. Is this really needed.  And if I set up a media
> resource groups for my
> srst site, the available resources are on the cms at
> the main site.  So the
> question is if I create one for srst and use the
> avil resource isn't that
> the same as using none or the default
>  
> James D. Grace 
> CCNP CCNA MCSE MCDBA
> Sr. System Engineer / Professional Svc.
> Digitel Corporation
>  
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