Welltech LP-388 Release 103 - Manual (Page 63)

LP388 User’s Manual 62
4.2.3 System Configuration
(1) Feature Configuration:
Inter Digit Time: Set the DTMF inter digit time (second). To
set the duration (in second) of two pressed digits in dial mode
as timed out. If after the duration user hasn’t pressed next
number, SIP Phone will dial out all number pressed.
Keypad DTMF Type: set DTMF type. User can select DTMF
type SIP Phone transmits:
in-band: The DTMF will be transmitted over audio path
through RTP.
sip info: The DTMF will be transmitted over SIP INFO
message and erased from the audio path.
RFC2833 (fall back to inband ): The system will try to use
RFC 2833 for DTMF transmission. When it failed to
negotiate the payload type, LP388 will use inband instead.
RFC 2833 (fall back to sipinfo) : LP388 will use SIP INFO
message to transmit the DTMF digit when RFC 2833 is
failed to negotiate through SDP.
End of Dial Key: select end of dialing key, e.g. set end of dial
key as * button, after finished pressing dialing number then
press * will dial out.
No Answer Time: default: 120 seconds, 0: Off. When
someone calls to LP388, but LP388 doesn’t pick up, after 120
seconds, LP388 will send 486 message to caller and stops
ringing then returns IDLE status.
Call waiting: Set to Enable. LP388 can receive the second
call when it’s on conversation.
Private Call ID: Line number will be changed to “Private”
when it makes call, but the function must be supported by
PX.
Reject Function: when receiving “Private” call, it will reject
this call.