System Functions and Features as of I7.9
420 Features
syd-0200/3.0 – I7.9 – 11.2009
Callback to an busy external user:
If user B is a PBX user, he must have his own direct dial number and his PBX must
also support the feature. There are three possible DDI variants:
DDI number → user B
DDI number → user B + UG
DDI number → user B + KT
Suffix dialling procedures
Tab. 258 Callback if user busy: Procedures
Note:
Completion of calls to busy is provided on the terminal even if it is not
available. Not available is signalled after activation.
System configuration
Tab. 259 Callback if user busy: System configuration
Reference to Other Features
8. 6. 17. 2 Callback to free user
User A can activate a callback to user B if B does not answer A's call. Since user B is
making another call (gone off-hook and then back on-hook again), user A is called
within 10 s. As soon as A picks up the phone, the system automatically calls user B.
Fig. 205 Callback to free user
System Terminals a/b terminal
Activate callback R9 or R*37
Clear callback #37
Parameter Parameter value Remarks
No settings
Features:
• "Callback to free user", page 420
• "Wait until free", page 422
• "Message function", page 409
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