Signaling system 7 is an international system used to communicate between telephone offices and other telecom systems. It conveys information about the status of each end of the call to the other. For example, it detects when the remote instrument is being rung and signals the originating office to play a "ringing" signal to the originating unit. It is also used for informing each end that the call has been answered and that it has been disconnected (later), which information is often critical for proper billing and for freeing up circuits that are no longer being used.
whats wrong with channel 7
7 in california
Channel one
channel 25 on comcast :)
it's on channel 7 that's why it's called abc7
A connection between two exchanges connection
Signaling System 7 managed traffic flow through a telephone network
The Independent Telecommunications Network, Inc. created Signaling System 7
The Independent Telecommunications Network, Inc. created Signaling System 7
non associated signaling quasi-associated signaling circuit related signaling non-circuit-related signaling
SIGTRAN (for Signaling Transport) is the standard Telephony protocol used to transport Signaling System 7 (SS7) signals over the Internet. SS7 signals consist of special commands for handling a telephone call.
A bit added to the 7 bit magnitude PCM in the T1 carrier system for D-type channel banks to perform interoffice signaling, such as on hook, off hook, dial pulsing, etc. -Advanced Electronic Communications Systems by Wayne Tomasi.
It enabled the elimination of charges related to "roaming" agreements between operators and special access codes that complicated the use of cellular phones
whats wrong with channel 7
SIP. Page 549 network+ PAGE 549 SENTENCE 2 STATES " THE VERSION OF SIP MOST POPULAR TODAY, 2.0" IT DOES NOT SAY IT WAS THE MOST POPULAR SIGNALING PROTOCOL USED ON TRADITIONAL CIRCUIT-SWITCHED PSTN CONNECTION PAGE 548 NOTE " ON THE CIRCUIT-SWITCHED PORTIONS OF THE PSTN, A SET OF STANDARDS ESTABLISHED BY THE ITU KNOWN AS SS7 (SIGNALING SYSTEM 7) TYPICALLY HANDLES CALL SIGNALING"
channel 7
channel 7