Huawei Mobius E5330Bs-6 Training Manual page 43

Chapter 4 Advance Settings
• SIP ALG Settings
• SIP: Session Initiation Protocol
• When SIP ALG function has disabled, users want to use VOIP service based on SIP protocol, the data
fl ow send from VOIP software client to VOIP server will be blocked by fi rewall, so VOIP service cannot
be used.
• When SIP ALG function is enabled the data fl ow from PC to internet could transfer through certain SIP
port, users could use VOIP service on PC side.
ALG: Application Layer Gateway