Re: SRST, MGCP and Dial Peers

ed.crawford · ‎05-05-2011

I am a bit confused about SRST with MGCP, particularly when it comes to dial peers. I have the folling configuration excerpt:

application
global
service alternate DEFAULT

!
controller E1 0/0/0
pri-group timeslots 1-10,16 service mgcp
!

ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server 10.100.3.20
!
mgcp
mgcp call-agent 10.100.3.20 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
!
mgcp package-capability rtp-package
no mgcp package-capability res-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp bind control source-interface GigabitEthernet0/0.100
mgcp bind media source-interface GigabitEthernet0/0.100
mgcp profile default
!
ccm-manager fallback-mgcp
!
dial-peer voice 553300 pots
service mgcpapp
destination-pattern 9T
incoming called-number .
direct-inward-dial
port 0/1/0:15
!

call-manager-fallback
max-conferences 4 gain -6
transfer-system local-consult
limit-dn 7911 60
limit-dn 7941 10
limit-dn 7961 2
ip source-address 10.100.2.1 port 2000 strict-match
max-ephones 96
max-dn 240 dual-line
application mgcp
dialplan-pattern 1 553... extension-length 5 extension-pattern ...

In order to make this configuration work, do I require outgoing dial peer as well? Also is the line "service mgcpapp" required in the dial peer? Sometimes I see people say "take it out", other times they say "put it in".

Thanks for your help.

nitsinha · ‎05-05-2011

I believe you can use dial-peer voice 553300 pots for outbound calls as well. It has the destination pattern and port command for call routing in SRST mode. MGCP mode will not require dialpeers for call routing since it is taken care by the call-agent.

As far as the service mgcpapp command is concerned, it is given under the dialpeer for analog ports and CAS connections. Since you are using PRI, i believe you can remove it from the diapeer without having any issues.

Hope that helps

Regards

Nitesh

PS:Please rate helpful posts

ed.crawford · ‎05-06-2011

So am I right in saying that this configurtion should work as it stands?

Maybe I should also add some dial peeers with more specific patterns such as 90[1-2].........??