Avaya - Watch guard issue with keep alives

[Jimbo2015]

We have an Avaya IP Office running on 9.1 with 9611G handsets over SIP.

After a period of inactivity the first inbound call to the phone system fails and does not connect and then a second call connects fine.
Also on long calls the call drops at around 15 minutes.

All the correct settings have been selected on the IP Office.

Is there anything except for SIP ALG which could case this on the watch guard?

SIP ALG is currently set to off as recommended by the SIP Provider.

TIA,

 

[hairlessupportmonkey]

Sounds like you dont have a SNAT rule to allow inbound connections.

Why didn't you opt for H323 remote?

There is a SIP ALG proxy, but I wouldnt use it as suggested, a simple SNAP rule will be fine, but its really important to tie the IP address down to the far ends IP.

Your better option is an SBC to take care of remote logins via SIP

ACSS - SME
General Geek