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Aastra 400 Series System Manual

Aastra 400 Series
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Features
470
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
9. 6. 17. 3 Wait until free
The Wait-until-free feature is a Callback-if-busy feature without the user who initi-
ates the call having to hang up. He stays on the phone and waits until the busy user
becomes free. The callback is triggered as soon as the called user has been free for
5 seconds. The connection is then set up automatically.
Fig. 223 Wait until free
Detailed Description
Tab. 277 Wait until free
User A must carry out the function with the handset off-hook and not via the loud-
speaker key.
"Wait until free" works only with cordless phones.
Suffix dialling functions
Tab. 278 Wait until free: Functions
Interface
Operating sequence / signalling on the termi-
nal
Scope
A • Once the callback function has been executed,
A obtains the acknowledgement tone.
• As soon as user B is free, A obtains the ring-back
tone.
B Possible interfaces:
internal, external
1)
1)
Callback to the busy external user is possible only if the public network supports the service "Completion of
Calls to Busy Subscriber" (CCBS) end-to-end.
Functions System phones Analogue terminal
Activate callback R9 or R*37
Clear callback #37

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Aastra 400 Series Specifications

General IconGeneral
BrandAastra
Model400 Series
CategoryServer
LanguageEnglish

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