Groupping SIP channels

Asterisk Asterisk Support
1

Hi,

I have two SPA3102 devices connecting my two analog GSM adapters to asterisk.

In the dialplan i can make use of the GSM lines with referencing them as SIP/gsm1 and SIP/gsm2. How can I handle them as a group? I want to use them as outgoing lines if someone calls a cell number, but i can only specify one at a time, so the 2nd outgoing gsm gets a busy signal obviously.

Is there a way to group them together? (Like with mISDN i used mISDN/g:isdnlines/${EXTEN})

Thanks.

2

Can you do this…

exten => _9.,s,NoOp(making an outgoing call)
exten => _9.,n,Dial(SIP/gsm1/${EXTEN:1})
exten => _9.,n,Dial(SIP/gsm2/${EXTEN:1})
exten => _9.,n,Congestion

If the first one is not available to send the call to, it falls to the second gsm.

Out of curiosity, what GSM adapter are you using?

3

Thanks for the tip.

I’m using Nokia Premicell adapters via SPA3102 devices.