uses explicit signalling to manage call state: Q.931. Q.931 typically does not carry user data. Q.931 does not have a direct equivalent in the Internet...

mobile networks. H.323 call signaling is based on the ITU-T Recommendation Q.931 protocol and is suited for transmitting calls across networks using a mixture...

System) is a BT-designed signalling standard, and was introduced before the Q.931 standard was finalised by the international community. British Telecom used...

signalling, the D channel layer 2 protocol is Q.921 also called LAPD and it carries Layer 3 messages according to Q.931 protocol. B channel H channel v t e...

replaced by DASS2. This too will become obsolete over the coming years as Q.931, a European standard, becomes widely adopted in the EU. "Introduction To...

in telecommunications is one of the Information Elements (fields) of the Q.931 SETUP message. It is used by the calling party to specify the kind of B...

Initiation Protocol Signaling System No. 5 Signaling System No. 6 Signaling System No. 7 Skinny Client Control Protocol (SCCP, Skinny) Q.931 QSIG v t e...

to Q.931, Codeset 5 to the ETSI standard, Codeset 6 for national applications and Codeset 7 for PBX applications. The most common Codeset is 0/Q.931. Integrated...

integrated services network (PISN). It makes use of the connection-level Q.931 protocol and the application-level ROSE protocol. ISDN "proper" functions...

opposed to signaling systems which are message-oriented (such as SS7 and ISDN Q.931) where each message is able to convey multiple items of formation (e.g....