5-26 Call control procedures
297-2521-106 Standard 23.01 March 2001
for other calls. The network sends a REL COM message to the user, as
shown in Figure 5-15.
Figure 5-15
PRI-to-PRI disconnect, network initiates normal call clearing
Network
User
REL COM
REL
DISC
Free the NETWORK connection.
The trunk member is idled; the
B-channel is disconnected; and the
T305 and lockout timers are started.
Cancel T305 and lockout timers and
release B-channel call reference.
Disconnection of an EVS call
A facility message (containing the menu information collected by the EVS
ARU) is sent in addition to the regular sequence of call teardown messages.
Figure 5-16 illustrates a user-initiated call disconnect message sequence.
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