Welltech VoIP ATA series V.303 - Manual (Page 66)

ATA Web user guide
Welltech Technology Co., Ltd.
66 / 114 2015/1/8
Item Description
*This function must be supported by Server.
For example, if T1 is 500 ms, T2 is 4 seconds and B,F,H is 32
seconds, then non-INVITE retransmissions occur at intervals of
500 ms, 1s, 2s, 4s, 4s, 4s, 4s, 4s, 4s, 4s. This means that
retransmissions occur with an exponentially increasing interval
that caps at T2. In this particular scenario, there are 10
retransmissions which is a total of 11 requests from UAC.
SIP INVITE
Timeout Default: 30000 ms; Set up SIP Invite, If how long do not
respond, enter the failed state. This column can only enter
numbers; maximum length is 5 bytes with the range of
8000~64000.
Local SIP Port Default: 5060~5060.
Set up the Start and End SIP Port Range of phone 1.
This column can only enter numbers; maximum length is 5 bytes
with the range of 1024~40000.。
If you want to Set up a fixed port, please Set up the same value
of Start and End Port.
If you want to Set up a range, the left column is Start Port, the
right Port is End Port.
Local RTP Port Default: 20000~21999.
Set up the Start and End RTP Port Range of phone 1.
This column can only enter numbers; maximum length is 5 bytes
with the range of 1024~40000.
If you want to Set up a fixed port, please Set up the same value
of Start and End Port.
If you want to Set up a range, the left column is Start Port, the
right 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, LP399
sends Inband message and [RTP Event] message.
SIP Info + Inband: When you enter key information, LP399