I have got a VoIP network, a PBX Ericcsson PB200 connected to a Cico 2620XM by a E1 R2 digital signaling. I have connected the Cisco 2620XM to a Cisco 1751 through the FXS card, I am using a configuration Frame-Relay to connect the 2620XM to 1751 remotes. The remotes can communicate between them, but, if I want to do a phone call a PSTN number, I can't.
How can I do a phone call from a remote to a PSTN.
PSTN<--->PBX <---> Cisco2620XM <--->Cisco1751 remote1, Cisco1751 remote2,... , Cisco1751 remote N
