Call Waiting - ASCOM Ascotel 2025 System Manual

8.4.2

Call Waiting

Call waiting is used to notify an internal, busy subscriber B that another
subscriber C is waiting to talk.
Subscriber B can choose to take C's call (and put the original call on hold, end the
original call or set p a three-party conference) or reject it.
Fig. 2.183: Call waiting
Detailed Description
Tab. 2.175: Call waiting
Inter- Operating sequence / signalling on the terminal Scope
face
B B hears the dampened call waiting tone, which
is played into the current call. If B has a terminal
with display, the call number or name of caller
C is indicated, provided his CLIP / CNIP informa-
tion is available.
C • C obtains the ring-back tone by way of confir-
mation.
• C obtains the busy tone if call waiting is not
allowed or not available and if B rejects the call
waiting.
1)
If C is an external subscriber, call waiting is effected automatically (i.e. C cannot activate call waiting),
providing the subscriber receiving the call waiting has enabled the feature.
If B is in an outside call , call waiting will only work if this feature is enabled for
outside calls, too (applies to the entire system).
If Courtesy Service (announcement prior to answering) is activated and
subscriber B does not respond to the external call waiting, the calling subscriber C
will obtain announcement prior to answering.
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A
ascom Ascotel 2025/2045/2065
B
Requirement:
• B has allowed call waiting on his set.
• B is not in the process of setting up a call, in
an enquiry call or in a conference.
Possible interfaces:
1)
• Internal
Requirement:
• C is authorized to use call waiting.
Features 2.345