ASCOM Ascotel 2025 System Manual page 305

ascom Ascotel 2025/2045/2065
Call waiting not allowed or not possible
If alternative destinations have not been configured, the following rules apply:
• In the case of an incoming call from the public ISDN network the caller obtains
the busy tone.
If the caller has subscribed to the service "Automatic callback (CCBS)" with the
network operator, he can activate that service.
• In the case of an incoming call from the private leased-line network the caller
obtains the busy tone.
• In the case of an incoming call from the public analogue network the caller
waits until the called party is free (polling).
Subscriber has enabled call
waiting locally (#04 or by
function)
If subscriber is busy externally:
call waiting on outside calls is
enabled
no
Call waiting
rejected?
Connection
OK
Fig. 2.65: Call distribution if subscriber busy
2.128 Call Routing
Outside call
(with or without direct dial information)
Individual
SC busy
yes
Call waiting
possible?
Manually
by SC
yes
no
Digital
connection
yes
Clear down
connection, caller
obtains congestion
tone
Polling
(wait until free)
Subscriber has protected himself
against call waiting locally
(*04 or by function)
If subscriber is busy externally:
call waiting on outside calls is
disabled
no
Digital
no
connection
yes
Clear down
connection, caller
obtains busy
Polling
(wait until free)
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