Call Hold; Call Waiting; Call Transfer; Blind Transfer - Grandstream Networks HandyTone-486 User Manual

HandyTone-486 User Manual
5.2.3

Call Hold

While in conversation, pressing the "FLASH" button on the attached phone will put the remote end on
hold. Pressing the "FLASH" button again will release the previously Hold party and the bi-directional
media will resume.
5.2.4

Call Waiting

If call waiting feature is enabled, while the user is in a conversation, he will hear a special stutter tone
if there is another incoming call. User can press the flash button to put the current call party on hold
and switch to the other call. Pressing flash button toggles between two active calls.
5.2.5

Call Transfer

5.2.5.1 Blind Transfer

Assuming that call party A and B are in conversation. A wants to Blind Transfer B to C:
1. A presses "FLASH" on the analog phone ( or Hook Flash for old model phones) to get a dial
tone.
2. A dials *87 followed by C's number, then #(or wait for 4 seconds)
3. A can hang up.
NOTE: "Enable Call Feature" has to be set to "Yes" in web configuration page.
A can hold on to the phone and wait for one of the three following behaviors:
• A quick confirmation tone (temporarily using the call waiting indication tone) followed by a
dial tone. This indicates the transfer is successful (transferee has received a 200 OK from
transfer target). At this point, A can either hang up or make another call.
• 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.
• Busy tone keeps playing. This means we have failed to receive the second NOTIFY from the
transferee and decided to time out. Note: this does not indicate the transfer has been successful,
nor does it indicate the transfer has failed. When transferee is a client that does not support the
second NOTIFY (such as our own earlier firmware), this will be the case. In bad network
scenarios, this could also happen, although the transfer may have been completed successfully.

5.2.5.2 Attended Transfer

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