UC2000-VE/F/G GSM/CDMA/WCDMA VoIP Gateway User Manual
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Shenzhen Dinstar Co., Ltd.
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T2
This field specifies retransmission timer for T1 timeout of SIP message, in
milliseconds. Default specifies 4000.
T4
This field specifies retransmission timer for T2 timeout of SIP message, in
milliseconds. Default specifies 5000.
TMAX
This field specifies maximum timeout value for SIP message. The SIP message will
be dropped after TMAX. Default value is 32000
Keepalive Interval
The gateway can monitor the status of SIP server by sending periodic SIP OPTION
messages. This field specifies transmission timer of OPTION message. Its range
from 32-3600s.
Keepalive SIP ID
This field specifies SIP ID of OPTION. The format would be <xxx@host.com >,
example:
OPTIONS sip:heartbeat@172.16.0.8:2080 SIP/2.0
Via: SIP/2.0/UDP 172.16.222.22;branch=z9hG4bK45c4f8d2026d9eed8a0adcd533161efd;
From: <sip:heartbeat@172.16.222.22:2080>;tag=6d48f0a169d33fe7b032c0fd895084fd
To: <sip:heartbeat@172.16.0.8:2080>
Call-ID: 8874a4e49f11af243c6b717c05a16e35@172.16.222.22
CSeq: 1804289386 OPTIONS
Contact: <sip:31@172.16.222.22>
Max-Forwards: 70
Accept: application/sdp
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