One communication with ISDN PRI

[olakayode]

I have a problem with my ISDN PRI doing a one way communication with a connected PABX. The error on the gateway is 'Cause i = 0x82E070 - Mandatory information element missing'. I've gone through Cisco and the cause is linked to the D-channel. This connection was initially working and I've gone through all the D-channel configs without success. The parameter that brings up the D-channel is isdn protocol-emulate network. Pls help!!!

[gogasca]

Please paste your configs and the debug isdn q931

Gonz

[olakayode]

Thanks Gonz, I was able to resolve the problem. It was due to the D-channel as explained in my earlier post. I got the solution after trying a post from the archives. This was the command that solved the problem "isdn overlap-receiving". Can't really explain but I believe it's a signaling handshake from both gateway and PABX.