SIP extensions

[Alaskatelecom]

Greetings from a newbie

Please be patient with me, I'm new to the Avaya CM/ASA stuff.
I've got a couple remote workers at home who were provided SIP phones and were setup prior to me coming on board.
Unfortuntely I have no documentation on settings/etc, so I'm unsure how to troubleshoot these devices that are no longer connecting.

Can anyone provide me with some basic guidance on where I can look in the ASA for any settings/IP's/etc that I would need to ensure all settings on the devices are correct?

Any help would be greatly appreciated.

Thank you

 

[gwebster]

There are many reasons why they may no longer be working. Expired certificates for example. Are they connecting through an SBC? ..and System Manager is how SIP devices are configured.