[cisco-voip] SRST What am I missing

Thu Jan 19 14:30:15 EST 2006

First, thanks to all that have replied.
I think I understand what I am missing.

If I were to change these three lines from this
dial-peer voice 99920 pots
application mgcpapp
port 2/0
!
dial-peer voice 99921 pots
application mgcpapp
port 2/1
!
dial-peer voice 99922 pots
application mgcpapp
port 2/2

To This

dial-peer voice 99920 pots
application mgcpapp
destination-pattern 9T
port 2/0
!
dial-peer voice 99921 pots
application mgcpapp
destination-pattern 9T
port 2/1
!
dial-peer voice 99922 pots
application mgcpapp
destination-pattern 9T
port 2/2

Should that work once it switches to SRST / H.323?
Or do I need new dial-peers for when it goes into fallback?

I do not know much about H.323 yet so what would I need to setup for the incoming dial peers?

Travis Llewellyn
Network Administrator
Communication Federal Credit Union
travisll at comfedcu.org

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________________________________________
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jonathan Charles
Posted At: Thursday, January 19, 2006 12:00 PM
Posted To: Cisco VOIP List
Conversation: [cisco-voip] SRST What am I missing
Subject: Re: [cisco-voip] SRST What am I missing

First off, do the phones register via SRST and say "CCM Fallback" when the WAN connection goes down?

Do a 'show ephone registered' when in fallback to see if they do register (or check the log afterwards, you should see the devices registering.

Assuming they do register, you are going to need H.323 dial-peers to get outbound calls:

For example:

dial-peer voice 318 pots
 destination-pattern 9T
 port 2/0

etc...

You will also need an incoming dial-peer.

Because when you are in SRST mode, MGCP is down, so you need to be in H.323 mode and need those dial-peers to route calls.

Jonathan
On 1/19/06, Travis Llewellyn <travisll at comfedcu.org> wrote:

We have a 1760 that has 3 FXO ports that connect directly to SBC for
incoming calls.
Everything works perfectly with MGCP when the line between that location
and the Callmanager is up.
But when the line drops there phones no longer work for incoming or
outgoing calls.
I expected the calls to come in on the fxo port and goto station 6701
and then roll to the rest all in the 670? Numbers.
I also want them to be able to dial out those lines when the connection
goes down.

So what am I missing?
Thanks for any help.

ccm-manager fallback-mgcp
ccm-manager redundant-host 10.200.9.250
ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server 10.200.9.250 10.200.9.249 ccm-manager config
control-plane !
!
call application alternate default
!
voice-port 2/0
timing hookflash-out 50
!
voice-port 2/1
timing hookflash-out 50
!
voice-port 2/2
timing hookflash-out 50
!
voice-port 2/3
!
mgcp
mgcp call-agent 10.200.9.249 2427 service-type mgcp version 0.1 mgcp
dtmf-relay voip codec all mode out-of-band mgcp rtp unreachable timeout
1000 action notify mgcp package-capability rtp-package no mgcp
package-capability res-package mgcp package-capability sst-package no
mgcp package-capability fxr-package no mgcp timer receive-rtcp mgcp sdp
simple mgcp fax t38 inhibit mgcp rtp payload-type g726r16 static mgcp
bind control source-interface FastEthernet0/0.80 !
mgcp profile default
!
!
!
dial-peer cor custom
!
!
!
dial-peer voice 99920 pots
application mgcpapp
port 2/0
!
dial-peer voice 99921 pots
application mgcpapp
port 2/1
!
dial-peer voice 99922 pots
application mgcpapp
port 2/2
!
!
call-manager-fallback
max-conferences 4
limit-dn 7910 1
limit-dn 7935 1
limit-dn 7940 1
ip source-address 10.200.7.253 port 2000  max-ephones 24  max-dn 48
default-destination 6701  call-forward busy 670.
call-forward noan 670. timeout 10

Travis Llewellyn
Network Administrator
Communication Federal Credit Union
travisll at comfedcu.org

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