Call forwarding not working to external/cell number

(Voipnewbe) #1

Hi guys,

I have the freepbx 14 and grandstream phones and im unable to get the call forwarding working.

I have a pots line connected to dahdi and that is where im failing to get the call forwarding working. i have some debugs below, appreciate your help.


(Lorne Gaetz) #2

How many dahdi channels do you have? Inbound call is using 1 channel, and the outbound leg of the call appears to be failing due to no free dahdi channels.

(Voipnewbe) #3


at the moment if i go to DAHDI Channel DIDs, it shows 1.

(Lorne Gaetz) #4

Asterisk is a back to back user agent (B2BUA) meaning that it always stays in the call path. When you forward a call to an external DID, a second channel is set up and then bridged to the first, meaning you need at least 2 trunk channels. The channels don’t have to be the same technology tho, so you can add a SIP trunk and set up your outbound routes to use both SIP and DAHDI.

(Voipnewbe) #5

Ah ok.

there is one trunk now Dahdi01 and is attached to an outbound route, you are saying i can create another trunk, lets say sip and attach to the same outbound trunk like in sequence 2? is that correct?

(Lorne Gaetz) #6

Yes, correct.

(Voipnewbe) #7

Great. will give a shot


we have got another pots line and call forwarding is working fine. now the problem is, the call hungs up after 20 seconds, any clue?

(system) closed #8

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