ZyXEL Communications USG 2000 User Manual

 Chapter 32 Application Patrol

ZyWALL USG 2000 User’s Guide

• Enable maximize bandwidth usage so the SIP traffic can borrow unused 

bandwidth.

Figure 386   SIP Any to WAN Bandwidth Management Example

You also create a policy for calls coming in from the SIP server on the WAN. It is 
the same as the SIP Any to WAN policy, but with the directions reversed (WAN to 
Any instead of Any to WAN).

• Inbound traffic gets more bandwidth as the local users will probably download 

more than they upload (and the ADSL connection supports this). 

• Second highest priority (2). Set policies for other applications (except SIP) to 

lower priorities so the local users’ HTTP traffic gets sent before non-SIP traffic.

• Enable maximize bandwidth usage so the HTTP traffic can borrow unused 

bandwidth.

Figure 387   HTTP Any to WAN Bandwidth Management Example