Avaya Communication Manager Administrator's Manual page 1773

GLARE RESOLUTION
Outgoing
Call Type
B-channel
B-channel(s)
Wide
Wide
To reduce glare probability, the network needs to be administered so both sides of the interface select
channels from opposite ends of facilities. For example, on a 23B+D trunk group, the user side could be
administered to select B-channels starting at channel 23 while the network side would be administered to
start selecting at channel 1. Using the same example, if channel 22 is active but channel 23 is idle, the
user side should select channel 23 for re-use. This is known as linear trunk hunt and is the hunt option
used by Communication Manager for wideband.
Administrator's Guide for Avaya Communication Manager
November 2003
Incoming Switch-Supporting
Call Type User Protocol
B-channel No negotiation
Incoming call (from network)
wins
Outgoing call (to network)
retried on another trunk
Wide No negotiation
Incoming call (from network)
dropped
Outgoing calls (to network)
stay up but likely are dropped
by network because channels
are in use, although there is a
possibility some media servers
or switches might negotiate
these calls.
B-channel(s) No negotiation
Incoming call (from network)
wins
Outgoing call (to network)
retried on another trunk
Wide No negotiation
Incoming call (from network)
dropped
Outgoing call (to network)
stays up but likely are dropped
by network because channels
are in use.
Feature Reference
Wideband Switching
Switch-Supporting
Network Protocol
Negotiation is attempted
Incoming call (from user)
dropped if negotiation is
unsuccessful
Outgoing call (to user) stays up
No negotiation
Incoming call (from user)
dropped
Outgoing calls (to user) stay up
and possibly stay up if other
side lets the network call win.
Negotiation is attempted
Incoming call (from user)
dropped if negotiation is
unsuccessful
Outgoing call (to user) stays up
No negotiation
Incoming call (from user)
dropped
Outgoing call (to user) stays up
and may not be dropped by
other end because other end, if
it is not Avaya Communication
Manager, may let network call
win.
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