QSIG is an ETSI standard for an ISDN protocol used for interconnecting PBXs. It allows features that normally only work on a single PBX (camp on, call back, etc.) to work seamlessly across a network of PBXs. These networks are sometimes called a: Private Integrated Services Network or PISN.
See Also
- QSIG Wikipedia Article
- ETSI - European Telecommunications Standards Institute
- qsig.info - Information Website about QSIG and PBX interconnections
- QSIG Support in chan_capi
Comments
333ISDN Q.SIG and Asterisk or OpenPBX ?
Automatic Call back if the correxpondant where allready online.) :Call Completion To Busy Subscriber (CCBS). Information regarding the billing of the PSTN operator. Thank you ! Flo_turc