Q931
The Q.931 protocol enables the use of voice and image on networks for video conferencing. It provides no flow control, however, or retransmission, since the underlying layers are assumed to be reliable and the circuit-oriented nature of ISDN allocates bandwidth in fixed increments of 64 kbps. Q.931 does manage connection setup and close. Like TCP, Q.931 documents both the protocol itself and a state machine.
Short Name
Q931
Category
Multimedia
SubCategory
miscellaneous
Risk
2
Release Date
--
Supported Platforms
Available to all SRX running 12.3X48+
Available to all MX running 20.2R1+
Available to all vSRX running 20.3R1+
Port
TCP/1720
Application Group
junos-approot:applications:voip