I'm running SER. It allow caller make call PSTN.

 

 

=========                       =======                  ==========

|                |     make call    |             |                  |                  |

|    Caller    |  =========> |    SER  | =======> |   Gateway  | ====> PSTN

|                |                       |             |                  |                  |

=========                       =======                  ==========

 

I want auto terminate this call after 30' ==> How to config SER ??

 

Plz help me solve this problem. Thanks