Lucent Technologies Definity Enterprise Communication Server 8.2 Manuale Utente

Issue 1

April 2000

Features and technical reference 

1598

Wideband Switching 

B-channel

B-channel

No negotiation

Incoming call (from 
network) wins

Negotiation is attempted

Incoming call (from user) 
dropped if negotiation is 
unsuccessful

Outgoing call (to network) 
retried on another trunk

Outgoing call (to user) stays 
up

B-channel(s)

Wide

No negotiation

No negotiation

Incoming call (from 
network) dropped

Incoming call (from user) 
dropped

Outgoing calls (to network) 
stay up but likely are 
dropped by network 
because channels are in use, 
although there is a 
possibility some switches 
might negotiate these calls.

Outgoing calls (to user) stay 
up and possibly stay up if 
other side lets the network 
call win.

Wide

B-channel(s)

No negotiation

Negotiation is attempted

Incoming call (from 
network) wins

Incoming call (from user) 
dropped if negotiation is 
unsuccessful

Outgoing call (to network) 
retried on another trunk

Outgoing call (to user) stays 
up

Wide

Wide

No negotiation

No negotiation

Incoming call (from 
network) dropped

Incoming call (from user) 
dropped

Outgoing call (to network) 
stays up but likely are 
dropped by network 
because channels are in use.

Outgoing call (to user) stays 
up and may not be dropped 
by other side because other 
side, if it is not a DEFINITY 
ECS, may let the network 
call win.