3-Way Conferencing; Call Features - Grandstream Networks HandyTone-286 User Manual

Grandstream networks user manual analog telephone adaptor handytone-286

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Table Of Contents

Table of Contents

HandyTone -286 User Manual

• 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

Assuming that call party A and B are in conversation. A wants to Attend 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 then dial C's number then # (or wait for 4 seconds).

3. If C answers the call, A and C are in conversation. Then A can hang up to complete transfer.

4. If C does not answer the call, A can press "flash" back to talk to B.

NOTE:

• When Attended Transfer failed, if A hangs up, the HandTone-286 will ring user A again to

remind A that B is still on the call. A can pick up the phone to restore conversation with B.

5.2.6