How to Set Dial Peer Configuration on Cisco Voice Gateway Routers?

You need to create an incoming dial peer as follows:

dial-peer voice 100 voip

description ## incoming calls from DIDWW ##

incoming called-number 123456789

voice-class codec 1

session protocol sipv2

session transport udp

dtmf-relay rtp-nte

rtp payload-type nte 101

ip qos dscp cs5 media

ip qos dscp cs5 signaling

no vad

Where 12345678 is your DID.

Please note that if you have an access-list on the Cisco gateway, do not forget to permit the traffic coming from the DIDWW IP addresses. To see the list of DIDWW IP addresses go to The List of DIDWW IP Addresses.

Please find more information about DIDWW Configuration Scripts