Welltech LP-803 v.3.07 - Manual (Page 59)

LAN Phone 803
User Manual
Welltech Technology Co., Ltd.
59 / 90 2014/07/22
Item Explanation
Port is End Port.
Hold Type Default: RFC 2543 (0.0.0.0).
Set up Hold (define by RFC).
When this function is on, the information of [Connection Information
(c): IN IP4 xxx.xxx.xxx.xxx] will change IP to the device of executing
the function.
Provide options: RFC2543 (0.0.0.0), Type1 (Send only), Type2
(inactvie).
DTMF Type Default: RFC 2833.
InBand: When you enter key information, the [Ethereal] will not show
it.
RFC2833: When you enter key information, the [Ethereal] will show
[RTP Event].
SIP Info: When you enter key information, the [Ethereal] will show
[Request: Info].
Provide options: InBand, RFC2833, SIP Info.
RFC2833 + Inband: When you enter key information, LP803 sends
Inband message and [RTP Event] message.
SIP Info + Inband: When you enter key information, LP803 sends
Inband message and [Request: Info] message.
RPort Default: Disable; Set up RPort function. When this function is on, the
[Rport] message will add in [Message Header].
Provide options: Disable, Enable.
*This function must be supported by Server.
Voice QoS
(Diff-Serv) Default: 40; This column can only enter numbers; maximum length is
2 bytes with the range of 0~63.
SIP QoS (Diff-Serv) Default: 40; This column can only enter numbers; maximum length is
2 bytes with the range of 0~63.
Use DNS SRV Default: Disable.
When this function is on, the package will show [DNS, Standard query
SRV_sip_upd.xxx.xxx.xxx].
Provide options: Disable, Enable.
*This function must be supported by Server.
Keep-alive
Message Default: Disable; When this function is on and system is in NAT, LP803
will send a package to Server periodically according to [Send Keep
Alives Packet].
Provide options: Disable, Send UDP, Send SIP Option.
Send UDP: Use UDP format to send; For example: UDP, Source Port:
sip Destination Port: xxxx.
Send SIP Optoin: Use SIP Option format to send; For example: SIP,
Request-Line: OPTIONS sip:xxx.xxx.xxx.xxx;user=phone SIP/2.0.
Keep-alive Interval Default: 60; This column can only enter numbers; maximum length is
3 bytes with the range of 15~250.
Jitter Buffer Default: 1~64; Set up Jitter Buffer.
In VoIP system, the time of every voice package arrives destination will
affect by Network Delay. Therefore, Jitter Buffer is used in destination