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New Member

No audio and disconnect on MGCP gateway

I am attempting to set up a small lab using Call Manager 4.0(2)sr2c. I have a 2621 router with a NM-2V module and two port FXO vic installed.

The FXO is connected to a single number outside line provided by telco.

I have the MGCP gateway setup and connected to CM. It routes to a specific DN that I have configured on a 7960 phone in my office.

WHen I call the number connected tot he FXO the following happens:

1. The associated 7960 phone rings.

2. If I answer the call, there is NO audio, and after exactly 16 seconds the call is disconnected and the FXO port is placed in an out of service stated (according to Real Time Monitor). I then have to shut/no shut the voice port to get it back in service.

My goal is to be able to call into this lab, receive and emulate calling into our production system. Any help would be apprecited!

Oh, I also cannot make outbound calls, but I'm figuring that is a different problem and will work them one at a time.

My 2621 config is as follows:

!

version 12.2

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname LAB-GW-DC01

!

enable secret 5 XXXXXXXXXXXXXXXXXXXX

enable password XXXXXXXXXXXXXXXXx

!

memory-size iomem 10

ip subnet-zero

!

!

!

mgcp

mgcp call-agent 192.168.200.1

mgcp dtmf-relay codec all mode out-of-band

call rsvp-sync

cns event-service server

!

!

!

!

!

ccm-manager switchback graceful

ccm-manager redundant-host 192.168.200.2

ccm-manager mgcp

!

!

!

interface FastEthernet0/0

ip address 192.168.200.254 255.255.255.0

duplex auto

speed auto

no mop enabled

!

interface FastEthernet0/1

no ip address

shutdown

duplex auto

speed auto

no cdp enable

!

ip classless

ip http server

!

dialer-list 1 protocol ip permit

dialer-list 1 protocol ipx permit

!

!

voice-port 1/0/0

!

voice-port 1/0/1

!

dial-peer cor custom

!

!

!

dial-peer voice 1 pots

application mgcpapp

port 1/0/0

!

dial-peer voice 2 pots

application mgcpapp

port 1/0/1

!

!

line con 0

exec-timeout 0 0

line aux 0

line vty 0 4

password XXXXXXXXXXXX

login

!

end

Thanks for any help!

Bryan Carter

2 REPLIES
Silver

Re: No audio and disconnect on MGCP gateway

Check if the gateway can reach the IP Phone by pinging the phone from the gateway.

Regards,

Anup

New Member

Re: No audio and disconnect on MGCP gateway

hi,

during the time of call , can you see which DSP is being used.

sh dsp stat.

let me know abt this.

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