Blind Transfer During Connection

Description

The regular Call Transfer is capable of doing transfer only after a successful inquiry to another station during connection.
This means if no answer during inquiry it is not possible to transfer the call to a private ringing station or a ringing group.

Blind transfer is based on the Inquiry Call feature.
Configuring Inquiry with parameter 1 = 1 will activate transfer directly to the feature directory number dialed during Inquiry.
This extends the transfer feature to also give the possibility to do transfer to:

• Stations in private
• Ringing groups
• SIP phones
• Group call
• ++

In combination with automatic search a switchboard operation can be made.
The search string number counter and station is reset when preforming a blind transfer.
Example:

• A is a switchboard defined as ringing group 1.
• B and C are users with automatic search on private ringing /busy programmed as ringing group 1.
• D is someone calling to the switchboard, could be SIP or AlphaCom station.

1. D calls A
2. A does a blind transfer to B, B is private ringing
3. After private ringing timeout D is activating ringing group 1 call back to A, from B's first search string
4. A does a blind transfer to C, C is busy
5. D is activating ringing group 1 call back to A, from C's first search string

etc. etc.

Known limitations

• A (AlphaCom) calls B (SIP) and A try to transfer B to a ringing group. This is currently not supported. ( A (SIP) calls B (AlphaCom) and B transfer to Ringing group is working)

Software Operation

When activating blind transfer a legal directory number is collected.
The directory number collected is sent to the other call participant.
The station receiving the number is canceling current call and activating the new directory number.
In AlphaNet call situations the proxy station is activating/collecting the directory number.