I have a problem with call queues via a GSM module with a SIM card.
CentOS 6 + Asterisk + GSM Module Server ( DAHDI ) + 1 SIM
I 'm trying to set up a queue outside calls with agents , and this is my problem.
When I call the number of the SIM card in the GSM module I have :
If I call only with an outside number I have no problems , overseas phone rings hold music until the call is attended by all right agent, but when another outside number calls the internal SIM same in which the first call is on expected in the second phone a busy tone sounds and my call is cut ( does not enter the queue).
I’m looking for solution and can not find it anywhere.
Can anybody help me? (I’m a newbie).