Logic of selecting ISDN BRI channels for GSM Gateway call load balancing

Unanswered Question
Aug 6th, 2009
User Badges:


I have 2N ISDN LITE GSM Gateway. Two sim cards with some free minutes. I want to load balance between both cards. There is a thick that on the GSM GW that says 1 SIM on 1 B-chan, 2 SIM on 2 B-chan. I'm wondering is it possible to configure logic of selecting ISDN BRI channels for example longest idle.

Any other advices will be greatly appreciated.

Thank you.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
paolo bevilacqua Thu, 08/06/2009 - 01:18
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

No, router will always choose the highest free channel on a single BRI.

It would be possible, via trunk-group, when using multiple BRIs.

KonradStepniewski Thu, 08/06/2009 - 05:44
User Badges:
  • Silver, 250 points or more

It can be possible on gateway it self. Got SIP GSM gateway where I can implement some logic. Not sure about your model tho.

z.zdravkov Thu, 08/06/2009 - 06:02
User Badges:

We tried with the GSM gateway but it doesn't work. There is something written in the data sheet but there isn't documentation about it.

Now I will try to do it by prefix. For example 50% of the end users will prefix the calls with 7 and 50% with 8. The calls started with 7 will be routed to the first card and with 8 to the second.

I hoped for smarter configuration but there isn't way.

Thank you.


This Discussion