DAG1000/2000 Series FXS Voice Gateway User Manual
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call is placed on hold. Press the “flash” button to toggle between two active calls.
2.4 Call Transfer
2.4.1Blind Transfer
Blind transfer used to transfer call to the third party without inform caller. Assume that call
Caller A and B are in conversation. A wants to Blind Transfer B to C:
1
）
Caller A presses
FLASH
on the analog phone to hear the dial tone;
2
）
Caller A dials
*87
then dials caller C’s number, and then # (or wait for 4 seconds);
3
）
Caller A will hear the confirm tone. Then, A can hang up.
Note
：
“
Call features enable
” must be set to “Yes” in web configuration page. Caller A can place a
call on hold and wait for one of three situations:
1
）
A quick confirmation tone (similar to call waiting tone) followed by a dial-tone. This
indicates the transfer is successful. At this point, Caller A can either hand up or make
another call.
2
）
A quick busy tone followed by a restored call (on supported platforms only). This means
the transferee has received a 4xx response for the INVITE and we will try to recover the
call. The busy tone is just to indicate to the transferor that the transfer has failed.
3
）
Continuous busy tone. The phone has timed out.
2.4.2 Attended Transfer
Attended transfer allows users to confirm the third party response and decide whether to
answer the calls and then transfer this call to the third party.
Assume that Caller A and B are in conversation. Caller A wants to
Attend Transfer
B to C:
1
）
Caller A presses
FLASH
on the analog phone for dial tone;
2
）
Dial Caller C’s number followed by # (or wait for 3 seconds);
3
）
If Caller C answers the call, Caller A and Caller C are in conversation. Then A can hang
up to complete transfer;
