SPA-3102: Routing PSTN calls to system extensions.

[coskan]

Hello,

I have a problem with 3CX and Linksys SPA-3102 configuration. Actually everything works except the system diverts the PSTN Calls to system extensions. When a PSTN inbound call rings, only the phone which is connected to "Line 1" of "SPA-3102" rings, but not the extensions of 3CX. In 3CX, I have routed the PSTN inbound calls to the extensions but it doesn't work.

I'll be appreciate that if I can get some help about this problem.

Thanks in advance.

PS: The images of the configuration are attached.

 

[coskan]

Hello, after a few more try I have found the problem; FXO Timer Values (sec) -- PSTN Ring Timeout: must be 6.

At the moment, everything works.

For those who needs my settings, just check the attachment.

 

[leejor]

I don't have a copy of the SPA3102 admin guide with me but I would suspect that the default (factory) setting for that timer would have been higher, perhaps 30 seconds or more. When starting from factory settings, there are generally, and it does depend where in the world you are, certain things that require changing to get the basics working. I don't recall seeing other having that particular problem before.
As you've discovered, the 3102 can be frustrating. When it is working, it does do many things well.

 

[dab]

PSTN Ring Timeout: must be 6.

Can you tell me what setting you had before?

 

[leejor]

Hello, after a few more try I have found the problem; FXO Timer Values (sec) -- PSTN Ring Timeout: must be 6.

Ok, finally have access to all my info... The PSTN Ring Timeout defaut is 5 (seconds), it's purpose is "Delay after a ring burst before the SPA decides that the ring has ceased. the range is 0-255"

So what this means is the SPA saw a ring, and then 5 seconds had elapsed before the next ring, so the 3102 assumed the incoming call had ended and "gave up". Normally there should not be a pause of more than 5 seconds between ring bursts, that is why the majority of people have no problem with the default value.

 

[coskan]

Yes, I also get the logic of each value slowly and since 2-3 weeks no problem. Everything works as expected. Thank you for your, dab's and other's helps indeed. It really helped me alot.


Regards