NEC SL2100 SIP Trunk showing none.

[Tinos]

Hi all.
I have a configured SIP Trunk which worked fine and has suddenly stopped. Incoming calls fail and provider receives 486 Busy from NEC for all INVITEs.
Outgoing calls fail with a busy tone. When I check 14-18-01 System Data > IP Trunk Data Setup > IP Trunk Type is set to "none". Initially it was set to "SIP" and is now greyed out on "none" and cannot be changed. How do I change it back from "none" to "SIP"?

 

[cnyamukondiwa]

HI,
Just click on the drop down arrow and select SIP
You have to specify the system start port and and number of trunk ports
Also check your IP trunk licenses under feature activation
Apply and this should ok

 

[Tinos]

Thank you for your response.
System start port and and number of trunk ports is already done and was working
Clicking drop down arrow to select SIP is greyed out as in the picture and wont change.
IP Trunk licenses are active. Which one is Feature Activation?

 

[DoubleDizzle]

Hello Tinos,

I have seen this situation occur when the system memory battery needs replacing.
Check the system alarm logs for "low mem batt"
Clear out your data in 10-68 click apply, then re-enter the data and see if the info in 14-18 is correct.
Replace the battery if needed.
I would highly recommend upgrading the system to v5.30 if it isn't already as well.