Registered 192 to an Avaya CM 8.1 system and when testing inbound faxing, the carrier is sending ptime=20 and the ATA is acknowledging with 30. Need to know what settings if any I can adjust in the ATA to send the correct size packet. 

Helo All. Is ATA 192 compatible with Avaya Communication Manager 8.1 platform? We recently purchased one and I cannot get the extension registered. It states it failed.