Technology, Data Communication Terms, Glossary and Dictionary
Signaling Gateway (SG) is a gateway that processes only signaling traffic (no bearer traffic.) For example, a gateway that terminates SS7 A-links is a signaling gateway. In a VOIP nework, signaling Gateway is a device that sends and receives PSTN signalling at the edge of IP/ATM network. It backhauls the signalling to a Media Gateway Controller. The Signaling Gateway function may be co-resident with the Media Gateway function to process signaling associated with line or trunk terminations controlled by the Media Gateway.