Выражение встречается в следующем контексте: Interworking with CAMEL services for a forwarding leg

Заранее спасибо

http://www.cisco.com/warp/public/788/voip/dialpeer_call_leg.html
A voice call over a packet network is segmented into discrete call legs. These are associated with dial-peers (a dial-peer is associated with each call leg). A call leg is a logical connection between two router/gateways or between a router/gateway and an IP Telephony device (for example Cisco CallManager, SIP Server, and so forth). To illustrate this concept, see Figure 1 and Figure 2 here: