I have 2610 XM with 1 Fastethernet and VIC2-2BRI. Dialin and dialout over pstn is ok. Also inbound pstn calls get redirected to Asterisk y.y.y.y But I want to setup VOIP sessions with local carrier. I added dial-peer 40 for this and enabled ip2ip on this peer. Calls will get routed trough this peer but the remote sip server is never contacted (no activity with tcpdump) My situation: PSTN -> CISCO -> ASTERISK OK ASTERISK -> CISCO -> PSTN OK ASTERISK -> CISCO -> VOIP NOT OK (Got SIP response 302 "Moved Temporarily") Cisco debug ccsip: --- Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/sipSPIProcessContactInfo: Previous Hop y.y.y.y:5060 Nov 30 20:07:54: //-1/xxxxxxxxxxxx/SIP/Event/sipSPIEventInfo: Queued event from SIP SPI : SIPSPI_EV_CC_CALL_PROCEEDING Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_call_forward: Call forward target num 0840123456789101 Nov 30 20:07:54: //-1/xxxxxxxxxxxx/SIP/Event/sipSPIEventInfo: Queued event from SIP SPI : SIPSPI_EV_CC_CALL_FORWARD Nov 30 20:07:54: //-1/xxxxxxxxxxxx/SIP/Event/sipSPIEventInfo: Queued event from SIP SPI : SIPSPI_EV_CC_CALL_DISCONNECT Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/act_spi_call_forward: Performing call forward Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Filter pots dialpeers Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Call forward dpeer tag: 40 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Call forward dpeer tag: 50 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Call forward dpeer tag: 60 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_add_redirect_contact: found voip peer, using session target as contact Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Call forward filtered dpeer tag: 40 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Info/ccsip_spi_create_call_forward_contact_list: Number of redirect contacts added: 1 Nov 30 20:07:54: //4/5B14408F8008/SIP/Transport/sipSPISendInviteResponse: Sending 3XX Response to the Transport Layer --- Config: --- dial-peer voice 10 pots description INBOUND CALLS PSTN BRI0 incoming called-number 2012345.. no digit-strip direct-inward-dial port 1/0/0 ! dial-peer voice 20 pots description INBOUND CALLS PSTN BRI1 incoming called-number 2012345.. no digit-strip direct-inward-dial port 1/0/1 ! dial-peer voice 30 voip destination-pattern 2012345.. session protocol sipv2 session target ipv4:y.y.y.y:5060 session transport udp dtmf-relay sip-notify codec g711alaw no vad ! dial-peer voice 40 voip destination-pattern .+ redirect ip2ip session protocol sipv2 session target ipv4:x.x.x.x:5060 session transport udp codec g711alaw no vad ! dial-peer voice 50 pots tone ringback alert-no-PI description OUTBOUND CALLS PSTN BRI0 preference 5 destination-pattern .+ no digit-strip port 1/0/0 ! dial-peer voice 60 pots tone ringback alert-no-PI description OUTBOUND CALLS PSTN BRI1 preference 5 destination-pattern .+ no digit-strip port 1/0/1 ! sip-ua no redirection retry invite 3 retry response 3 retry bye 3 retry cancel 3 timers trying 1000 sip-server ipv4:x.x.x.x:5060 ! ---