MGCP GATEWAY

[Matt91]

I created an MGCP gateway, came up no issues and left for the day. Sure enough during the period of my absence, it no longer works. I've started from scratch and no unable to get it working again. My basic setup is an HDX with a PRI T1 to a 3825 router's T1 card. (NM-4VWIC-MBRD)(VWIC2-MFT-T1E1-T1). A basic POTS to VoIP setup. When call initiates from POTS, all circuits are busy (as much as she says she's sorry I don't believe her). When call initiates from the 7975 SCCP registered VoIP, fast busy. Even stranger though, I can make the phone call go through by typing the number (before hitting the new call soft key), hanging up then hitting re-dial. I've been scouring Google for hours now with no luck, and the debug on the router is starting to annoy me. Any help or input would be greatly appreciated.

 

[Matt91]

Forgot to mention the D-channel for the PRI T-1 is good between the HDX and 3825, I can watch the call route out of the HDX, and I have absolutely no experience on a Cisco IOS router!

 

[whykap]

If some of your calls are connected and some don't you need to look at your q931 debugs on the router and see why the call is failing going out.
Also you need to make sure that your MGCP registrations are not dropping for some reason, then reconnecting. Post your MGCP config on the gateway and also make sure your bind commands are there.

 

[Matt91]

I havn't seen it drop (other than when I restart it of course).



version 12.4
!
hostname ROUTER
!
boot-start-marker
boot-end-marker
!
card type t1 0 1
logging buffered 64000 informational
stcapp ccm-group 1
!
stcapp feature access-code
!
stcapp feature speed-dial
!
isdn switch-type primary-ni
voice-card 0
no dspfarm
!
controller T1 0/1/0
framing esf
linecode b8zs
cablelength long 0db
pri-group timeslots 1-24 service mgcp
!
controller T1 0/1/1
framing esf
linecode b8zs
cablelength long 0db
!
ip tcp synwait-time 5
ip telnet source-interface Loopback0
ip ssh source-interface Loopback0
!
interface Serial0/1/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
isdn bind-l3 ccm-manager
no cdp enable

voice-port 0/1/0:23
!
ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server <IP OF CUCM>
ccm-manager config
ccm-manager sccp local Loopback0
ccm-manager sccp
!
mgcp
mgcp call-agent <IP OF CUCM> service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
--More--  mgcp package-capability rtp-package
mgcp package-capability sst-package
mgcp package-capability pre-package
no mgcp package-capability res-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 Loopback0
mgcp bind media source-interface Loopback0
!
mgcp profile default
!
sccp local Loopback0
sccp ccm <IP OF CUCM> identifier 10
sccp ccm <IP OF ROUTER> identifier 30
sccp
!
sccp ccm group 1
associate ccm 30 priority 3
!

 

[Matt91]

After we deleted the port once more and started from scratch it came up. It re-downloaded to the router and came right up. The only difference is we changed it from offnet to on. Glad it's solved...now for SIP redundacy...