Adtran returns 486 busy message when PRI is full instead of 503

[wmckenzie]

Is there a way to force the Adtran to return a 503 instead of a 486 Busy here message when the PRI is full.

It's supposed to roll over to another PRI when it's full but it is not. It just returns 486, we have stop routes built that prevent the 486 from trying the next route.

Any help is appreciated.

Thank you

[merlin215]

You can contact your carrier and tell them , providing the both spans are under the same carrier . The can  set up failover and test it out . Been there many times !!!

If you have 2 spans :

1. channel 23 should be busy and send traffic over to channel 25 ( or channel 1 on the 2nd span ) .

2. If you unplug span one traffic should revert over to span 2 . Carrier issue ...

[wmckenzie]

Thanks for the input. Actually I am the carrier.

I opened a TT with Adtran and the response I got was as follows.

A 503 is the expected response on a full trunk.  There are known issues in AOS R10.9.4 that can result in the behavior you're seeing. Please upgrade to R10.9.8 or R11.4.3 and retest while running the debugs from my previous email.

Regards,

Robert

ADTRAN Technical Support

We will upgrade as suggested and repost the results.

[merlin215]

Hi

You are welcome ...

Well THIS is interesting  !!

Making a note of this one ...

Glad to hear you have a resolution !!!

Good luck !

Regards

Rich O'Connor

roconnor@thinkingphones.com