User's Manual

4-/8-/16-/24-/32-Port SIP Internet Telephony Gateway
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Send BYE when Recv REFER Response
(unattended)
If this parameter is enabled, the third party will send BYE to release
session after receiving REFER during a blind transfer.
Send New REGISTER when Recv 423
Response
If this parameter is enabled, the value of ‘expires’ header will be
automatically updated and REGISTER will be re-sent after receiving of
423 response.
Implicit Subscribe
If this parameter is enabled, the gateway will a
ccept implicit
subscription.
CSeq Start with 1
If this parameter is enabled, the value of CSeq starts with ‘1’.
Forbid Invilad m=line in reINVITE
If this parameter is enabled, the gateway will prevent ‘invilad m=line’
from being carried in the SDP of re-INVITE.
RTP Mode in SDP when Call Holding
Use ‘sendonly ‘ or ‘inactive’ as RTP mode during call holding.
Support Call Waiting of Huawei IPPBX
If this parameter is enabled, the gateway will support call waiting of
Huawei IPPBX.
Accept Orphan 200 OK
If this parameter is enabled, the gateway will support different ‘to-tag
200 OK’ in a INVITE session
Domain Query Type
There are two modes: A QUERY and SRV QUERY. Default is ‘A QUERY’.
Domain Re-resolution Interval
Default 0: forbidden
DNS cache
If this parameter is enabled, the gateway will cache the DNS query
results.
Early Media
Support the receiving of Early Media.
PRACK(RFC3262)
Support reliable transmission of provisional response
PRACK Only for 18x with SDP
Send PRACK only when there’s SDP in 18x response
Early Answer
If this parameter is enabled, SDP will be contained in 18x
Session Timer (RFC4028)
Whether to enable ‘session timer’, default value is ‘ no’.
Session-Expires
The Session-Expires header field conveys the session interval for a SIP
session.
Min-SE
Min-
SE header field indicates the minimum value for the session
interval.
T1
T1 timer of SIP protocol, default is 500ms
T2
T2 timer of SIP protocol, default is 400ms
T4
T4 timer of SIP protocol, default is 500ms
Max Timeout
The max timeout of sending or receiving; default is 32s
Heartbeat Interval
Default is 10s.
Heartbeat Timeout
Default to 16s
Username of OPTION(Heartbeat) for
“SIP Server”
The user ID part of OPTION SIP message in the heartbeat request for
SIP server
Username of OPTION(Heartbeat) for
“IP TRUNK”
The user ID part of OPTION SIP message in the heartbeat request for IP
trunk