Signaling Protocol; Signaling Messages - 3Com CoreBuilder 7000 Operation Manual

Signaling Protocol

Signaling Messages

ATM uses the UNI signaling standard protocol for dynamically
establishing, maintaining and clearing SVC connections between
endpoints. The procedures are defined in terms of messages and the
information elements that characterize the ATM connection and ensure
interoperability between end-stations.
The major features of the signaling protocol include:


On-demand connections


Point-to-point and point-to-multipoint connections


Multiple address formats


Multicast service addresses


Anycast service addresses


Dynamic VPI/VCI assignment


Traffic parameters exchange


Characteristic per call per application.
The signaling protocol that establishes the connection consists of a
command set with a set of watchdog timers. The watchdog timers allow
the system to declare an error and continue operating when a response
to a command is not received within an expected time interval.
Table 27 displays the signaling message set in the CoreBuilder 7000
family ATM switch, organized according to type of message.
Table 27 Signaling Messages According to Type
Connect Disconnect
SETUP RELEASE
CALL RELEASE
PROCEEDING COMPLETE
ALERTING RESTART
CONNECT RESTART
ACKNOWLEDGE
CONNECT
ACKNOWLEDGE
ADD PARTY DROP PARTY
Signaling — External Links
Other
messages
STATUS
ENQUIRY
STATUS
NOTIFY
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