SIP Configuration

Sip Basic Call Flow:Configuration:

Router(config)#voice service voip
Router(conf-voi-serv)#sip
Router(conf-serv-sip)#session transport {udp|tcp}
Router(conf-serv-sip)#bind control source-interface Loopback 0
Router(conf-serv-sip)#bind media source-interface Loopback 0
Router(conf-serv-sip)#exit
Router(conf-voi-serv)#no shutdown
Router(config)#sip-ua
Router(config-sip-ua)#authentication username password
Router(config-sip-ua)#registrar dns:sip2.cisco.com expires 3600
Router(config-sip-ua)#sip-server dns:sip2.cisco.com
Router(config-sip-ua)#retry invite 2
Router(config-sip-ua)#retry response 2
Router(config-sip-ua)#retry bye 2
Router(config-sip-ua)#retry cancel 2

Dial-peer:
Router(config)#dial-peer voice 50 pots
Router(config-dial-peer)#destination-pattern 5.
Router(config-dial-peer)#session protocol sipv2
Router(config-dial-peer)#session target sip-server
Router(config-dial-peer)#dtmf-relay {rtp-nte|sip-notify}

Verifying Configuration:
# show sip service
# show sip-ua status
# show sip-ua register status
# show sip-ua timers
# show sip-ua connections
# show sip-ua calls
# show sip-ua statistics
# debug asnl events
# debug voip ccapi inout
# debug voip ccapi protoheaders
# debug ccsip all