VOPTech Document Four Channel’s GSM VoIP Gateway
Copyright@2009 VOPTel Technology Co., Ltd All Rights Reserved.
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A
）
Signaling Port (SIP Local port)
The default SIP port is 5060. Change this as required.
B
）
NAT Keep-alive
The NAT Keep-alive feature sends a null packet to the SIP Proxy periodically in order
to keep the NAT open for incoming data traffics.
C
）
Advanced Timing Settings
Some SIP proxies may have special timing requirements. Change these parameters as
required.
D
）
Signaling Qos
Signaling QoS improves the performance of SIP signaling. If local network device
