Currently running Siemens PBX for internal Calling & PSTN.
Other remote locations are connected through WAN links which are terminated on Cisco 3845 Router.
We are planning to do the VOIP calls to these remote locations. In the router we added E1 card with the necessary DSP resources. In the Router, Configured QSIG trunk and connected to PBX . But VOIP calls are not happenning.
Can someone help me out!!!