P-2024 Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
4
What is voice quality?..................................................................................39
How are voice quality normally rated?........................................................39
What is codec?.............................................................................................39
What is the relationship between codec and VoIP? .....................................40
What codec types does P-2024 support? .....................................................40
Which codec should I choose?.....................................................................40
What do I need in order to use SIP? ............................................................40
I am unable to register to a SIP server .........................................................41
I can register to the SIP server but cannot establish a call...........................41
I can make or receive a call but the voice traffic only goes one way, not
both way.......................................................................................................41
I have tried all the troubleshooting steps, but still cannot register to the SIP
server. What should I do next?.....................................................................41
What should I do if there may be a hardware problem with my P-2024? ...42
Trouble Shooting........................................................................................................42
Unable to Get WAN IP from ISP .........................................................................42
Using Embedded Packet Trace ............................................................................46
Debugging PPPoE Connection ............................................................................61
CLI Command List....................................................................................................72
