[Freeswitch-dev] Unexpected call drop on PSTN network

Hi, I am facing a strange issue with making outgoing calls to PSTN netwrok through freetdm. The calls are successfully made to some Telecom networks while they just drop abruptly and hangup on other networks. The calls are being generated through inbound Even Socket originate action and put in a public context which executes a perl script in the dialplan. Please help me out. Thanks in advance. -- Ashish