QSIG is an ISDN based signaling protocol for signaling between private branch exchanges (PBXs) in a private integrated services network (PISN). It makes...

between QSIG and H.323 - Call Transfer Supplementary Services ECMA-309 – Corporate Telecommunication Networks - Signalling Interworking between QSIG and H...

detector rst = ~ (qsig & qref); % Reset the "flip-flop" of the phase-frequency % detector when both signal and reference are high qsig = (qsig | (sig & ~ lsig))...

(European DSS1). DSS1/EDSS1 protocol, in contrast, for example, to the protocol QSIG, was designed for use as access to public ISDN and asymmetric in the sense...

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...

was eventually deprecated by the standards bodies in favour of Q931 and QSig. Nevertheless, the elegance of the protocol and its compatibility with PBX...

establish the end to end connection. Calls through PBX networks are set up using QSIG, DPNSS or variants. Some types of calls are not charged, such as local calls...

transmitting calls across networks using a mixture of IP, PSTN, ISDN, and QSIG over ISDN. A call model, similar to the ISDN call model, eases the introduction...

several manufacturers is on-site, the use of a standard protocol is required. QSIG – for connecting PBXs to each other, usually runs over T1 (T-carrier) or...

interface across an IP network. Some users that it supports are Q.931 and QSIG. It is specified in RFC 4233. V5UA provides an SCTP adaptation layer for...