ASCOM Ascotel 2025, System Manual

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ascom Ascotel 2025/2045/2065
2.128 Call Routing HBT_20321104_02/B0_en
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).
Fig. 2.65: Call distribution if subscriber busy
Outside call
(with or without direct dial information)
Individual
SC busy
Call waiting
possible?
Manually
by SC
Call waiting
rejected?
Connection
OK
Digital
connection
Digital
connection
Clear down
connection, caller
obtains busy
Clear down
connection, caller
obtains congestion
tone
Polling
(wait until free)
Polling
(wait until free)
Subscriber has enabled call
waiting locally (#04 or by
function)
If subscriber is busy externally:
call waiting on outside calls is
enabled
Subscriber has protected himself
against call waiting locally
(*04 or by function)
If subscriber is busy externally:
call waiting on outside calls is
disabled
yes
yes
yes yes
no
no
no no
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