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get the full report. Signaling System 7 (SS7) is architecture
for performing out-of-band signaling in support of the call-
establishment, billing, routing, and information-exchange
functions of the public switched telephone network (PSTN). It
identifies functions to be performed by a signaling-system
network and a protocol to enable their performance. What is
Signaling? refers to the exchange of information between call
components required to provide and maintain service. of the
PSTN, we exchange signaling with network elements all the time.
Examples of signaling between a telephone user and the telephone
network include: dialing digits, providing dial tone, accessing
a voice mailbox, sending a call-waiting tone. SS7 is a means by
which elements of the telephone network exchange information.
Information is conveyed in the form of messages. SS7 messages
can convey information such as: " I'm forwarding to you a call
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