- Disable SIP ALG/Normalization/Transformation.
- Verify that NAT Binding/Keep-Alive packets are not blocked, but if they are and there is no option to enable, then set the phone's UDP session timeout to 300 seconds.
- Setup outbound rules to allow connections to Audian's server See Article: Server information
- RTP addresses
- SIP Registration Addresses
- Phone Configuration Servers
- Phone DNS & Time Servers
- WAN Ping Server
- Setup QOS settings. See Article: NetworkingQOS Settings Guides
- See Bandwidth Management/Rate Control/Traffic Shaping settings for your equipment.
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