What Does Q Signaling Mean?
Q signaling (QSIG) handles digital private branch exchange (PBX) signaling and is an Integrated Services Digital Network (ISDN) signaling standard built according to Q.931 specifications.
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QSIG is used in Voice over Internet Protocol (VoIP) networks, virtual private networks (VPN) and high-speed and multi-application networks for enterprises, universities and government entities.
Techopedia Explains Q Signaling
QSIG ensures that the following Q.931 functions are managed in networks that use equipment from different vendors:
- Setup signal: Indicates established connection
- Call-proceeding signal: Indicates destination call processing
- Ring-alert signal: Alerts caller regarding ringing destination device
- Connect signal: Indicates destination device call receipt
- Release-complete signal: Transmitted at the end of a call by the source or destination.
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