CO-CO call TDA

[SpitItOut]

Hi, I'want to ask for help. My trouble is that, I've got PBX TDA-100 with LCOT8 card, which is connected to GSM analogue gateways. Everything works correct, but there is a trouble with CO to CO call trought 2 GSM gateway, because when I end the call on one side, the PBX doesn't hang up and hold the both lines. If I change the GSM gateways to another type, it's the same. Do You know, how to fix this problem?

 

[cwc3]

you are not getting a cpc signal from the gateway

 

[dampa]

Hello!
Dont use analog GSM gateways for CO to CO calls , only for ISDN to GSM gateway CO to CO calls or transfer to CO calls, because ISDN has CPC ( calling party control feature from PSTN ) - this feature relasses a curent calls.

Bye Damir

 

[SpitItOut]

Thank You for help

Lukas

 

[YuryPetrov]

Turn on reverse mode on CO ports PBX and GSM gateways (if GSM gateways have it setting option) for incomming and outgoing calls. It is better than CPC signal.

 

[SpitItOut]

I tried something else and it works correct.On LCOT8 card, there is CPC signal detection time setting, by default there is"none", I tried to use few of detection times, but the best is 504ms for both (incoming and outgoing) traffic. Thank You for your help, friends.