ZyXEL Communications P-2024 Guide de l'utilisateur télécharger pdf (Page 4)

P-2024 Support Notes

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

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ZyXEL Communications P-2024 Guide de l'utilisateur Page 4