One way audio

[aalejo]

I am using a 2651XM Router with a AIM-VOICE-30 and a VWIC-MFT-E1 (PRI, ETSI (net5), Network, clock line).

One way audio to the PBX. From ip network users hears PBX users voice but not viceversa.

[paul.harrison]

There are so many possibilities, posting your config might help.

Have you tried

1. Turning on routing, even if you don't do routing on the box you need it for voice.

2. Run the h323-gateway bind command on the FE interface

Paul

[aalejo]

Paul

Routing is on (I am using cef)

The router has only one ip address (I dont need the h323-gateway bind command)

Sometimes this problems happens (calling from the same place to the same PBX destination) but sometimes everything is OK.

IOS: 12.3(1a)