I have 3 separate asterisk boxes all running version 1.4.44. Two of these boxes are production and the other for development. All 3 boxes have separate SIP provider accounts and can place/receive calls, however, when I enter ‘sip show registry’ in the CLI, I see the following empty list:
sip show registry
Host Username Refresh State Reg.Time
I also host a FreePBX box running version 1.8 on the same network as the other 3, and on it I can see the SIP account registry, so I don’t think it’s a firewall issue
I’ve been using asterisk now for almost seven years and have not seen this behavior. I find it interesting that all 3 of these boxes have the same result, ability to make calls but not show in the registry.
Any ideas of what I should look at as a possible cause?