Grandstream Networks GXP1610 User Manual page 28

GXP1610/GXP1620/GXP1625/GXP1628 supports Blind Transfer, Attended Transfer and Auto-Attended
Transfer.

Blind Transfer.
 During the first active call, press TRANSFER and dial the number to transfer to;
 Press SEND key or # to complete transfer of active call.

Attended Transfer.
 During the first active call, press LINE key. The first call will be put on hold;
 Enter the number for the second call in the new line and establish the call;
 Press TRANSFER;
 Press the other LINE key which is on hold to transfer the call.

Auto-Attended Transfer.
 Set "Auto-Attended Transfer" to "Yes" under Web GUI->Settings->Call Features. And then click
"Save and Apply" on the bottom of the page;
 Establish one call first;
 During the call, press TRANSFER. A new line will be brought up and the first call will be
automatically placed on hold;
 Dial the number and press SEND or # to make a second call. (Once the number is entered, a
"Transfer" soft key will show. If "Transfer" soft key is pressed instead of SEND or #, a blind transfer
will be performed);
 Press TRANSFER again. The call will be transferred.
For Auto-Attended Transfer, after dialing out the number for the second call, a "Split" soft key will

show. If the second call is not established yet (ringing), pressing "Split" will hang up the second call.
If the second call is established (answered), pressing "Split" will resume the second call and keep
the first call on hold.
Note:

To transfer calls across SIP domains, SIP service providers must support transfer across SIP domains.
GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 27 of 35