User manual

AT-640P User Manual
ATCOM TECHNOLOGY CO. , LIMITED
5) When C ’ s phone ring, B will be hung up , the LCD on B ’ s Phone shows “ Pls. Hang
Up ” .
6) C receives the call, start to talk with A.
Notice:
Notice:
Notice:
Notice:
SIP lines are not available for choosing when call transfer.

Attended Transfer
User A.B.C, assume B is AT-640P Ip phone
1) When A Calls B and B receives
2) B presses soft button “ Xfer ” .
3) B dials C ’ s number and C receives to talk with B.
4) B can press "Swit" to switch the call between A and C.
5) B Presses soft button “ Xfer ” , then transfers the A's call to C.
6) Meanwhile The LCD on B ’ s phone shows “ Call Ended ” .
Remarks:
To carry out this function, IP Phone must work with Call waiting and call transfer
function; meanwhile Sip server must support RFC3515.

Alert Transfer
User A.B.C, assume B is AT-640P Ip phone
1) When A Calls B with B receives.
2) B presses soft button “ Xfer ” when A is calling.
3) B dials C ’ s number.
4) After dialing C, B directly Presses soft button “ Xfer ” , then transfers the call to C.
5) C receives the phone, starts to talk to A.
Remarks:
To carry out this function, IP Phone must work with Call waiting and call transfer
function; meanwhile Sip server must support RFC3515.
7
7
7
7 、 Call
Call
Call
Call Hold
Hold
Hold
Hold
User can hold the current call by pressing soft button “ Hold ” . And by pressing
soft button “ Resu ” , user can get back to the previous call. In 3-way conference call
mode, user can also press this button to hold 3-way conference call, and if you press
it again, user can go back to 3-way conference mode. If hang up without exiting the
status of hold. The conversation will not be cancelled; the line is still on hold.
8
8
8
8
、
3-Way
3-Way
3-Way
3-Way Conference
Conference
Conference
Conference Calls
Calls
Calls
Calls
Assume B is AT-640P phone among user A,B and C.
A calls B and talks with B through VoIP.
1) B can press soft button “ conf ” to hold the call with A.