The IPIPGW supports configuration of an RTP loopback dial peer for use in verifying and troubleshooting H.323 networks. When a call encounters an RTP loopback dial peer, the gateway automatically signals call connect and loops all voice data back to the source. In contrast to normal calls through the VoIP-to-VoIP gateway, RTP loopback calls consist of only one call leg.
dial-peer voice 30 voip
destination-pattern 2222
session target loopback:rtp
incoming called-number 2222
codec g711ulaw
Telephony call-legs: 0
SIP call-legs: 0
H323 call-legs: 1
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 1
13FB : 67 97945490ms.1 +20 pid:30 Answer 5004 active
dur 00:00:12 tx:631/100960 rx:631/100960
IP 10.200.200.250:17012 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw
media inactive detected:n media contrl rcvd:n/a timestamp:n/a
CCIE Voice notes 