Good Morning All
Just looking to reach out to anyone that may have an Avaya IP Office phone system and a Palo Alto firewall.
We are having problems setting up the SIP Trunk configuration with the limited information there is available on the internet & we are currently being pushed backwards and forwards between the phone company and our Palo support agent, both sides either say its a telecoms issue or a firewall issues and neither will support one way or another as they don't have expertise in the opposite fields.
Basically the SIP trunk goes out of service after 60 seconds during its authentication process and I am sure we are missing a vital piece to the puzzle so I am hoping someone might be able to share their configuration with me.
We have Nat & Security rules in place that are apparently setup as required, ALG is disabled on the sip application & an application override policy is in place as per Palo Alto's configuration guides.
If anyone can offer any further assistance I would greatly appreciate it, thanks in advance
Andy