Chapter 17 Troubleshooting
V500 Series User’s Guide
232
V
I can make phonecalls, but I cannot receive them.
or
I can receive some phonecalls, but not others.
Check your V500’s call forwarding settings (see
). If they are
misconfigured, certain calls may be mistakenly forwarded.
V
All my VoIP calls are of poor audio quality.
• If your ISP or network administrator gave you SIP TOS or RTP TOS values to use, enter
them in the web configurator’s
VoIP
>
SIP
>
QoS
• If your V500 is connected to a router with configurable bandwidth management settings,
check these settings. Consult the router’s documentation for more information.
• Make sure that your V500 uses the voice codecs recommended by your VoIP service
V
I cannot use some calling features.
Many of the features your V500 supports depend on your VoIP service provider. You may
have to subscribe to certain services. Contact your VoIP service provider for more
information.
V
The incoming or outgoing audio is too quiet or too loud.
or
I cannot hear the V500’s ring when a call is incoming.
Use the
VOLUME
keys to increase or decrease the volume.
• When no audio device (the handset, speakerphone or an external headset) is active, the
VOLUME
keys control the ringing volume.
• When an audio device is active, the
VOLUME
keys control the input and output of that
device.
Содержание V500-T1
Страница 1: ...www zyxel com V500 Series IP Phone Models V500 T1 V501 T1 User s Guide Version 1 00 12 2008 Edition 3...
Страница 2: ......
Страница 7: ...Safety Warnings V500 Series User s Guide 7...
Страница 8: ...Safety Warnings V500 Series User s Guide 8...
Страница 10: ...Contents Overview V500 Series User s Guide 10...
Страница 17: ...Table of Contents V500 Series User s Guide 17 Index 289...
Страница 18: ...Table of Contents V500 Series User s Guide 18...
Страница 24: ...List of Figures V500 Series User s Guide 24 Figure 211 Subnetting Example After Subnetting 275...
Страница 29: ...29 PART I Introduction Introduction 31 Hardware 35 Tutorials 45...
Страница 30: ...30...
Страница 44: ...Chapter 2 Hardware V500 Series User s Guide 44...
Страница 60: ...60...
Страница 68: ...Chapter 4 Using the LCD Screen V500 Series User s Guide 68...
Страница 76: ...Chapter 5 The Phonebook V500 Series User s Guide 76...
Страница 102: ...Chapter 6 LCD Menus Basic Settings V500 Series User s Guide 102...
Страница 158: ...Chapter 7 LCD Menus Advanced V500 Series User s Guide 158...
Страница 160: ...160...
Страница 166: ...Chapter 8 Introducing the Web Configurator V500 Series User s Guide 166...
Страница 200: ...Chapter 12 Phone Setup V500 Series User s Guide 200...
Страница 210: ...Chapter 13 The Phone Book V500 Series User s Guide 210...
Страница 211: ...211 PART IV Maintenance and Troubleshooting System 213 Logs 219 Tools 221 Troubleshooting 227...
Страница 212: ...212...
Страница 234: ...234...
Страница 240: ...Appendix A Product Specifications V500 Series User s Guide 240 Figure 162 Masonry Plug and M4 Tap Screw...
Страница 264: ...Appendix B Setting Up Your Computer s IP Address User s Guide 264...
Страница 282: ...Appendix E Legal Information V500 Series User s Guide 282...
Страница 288: ...Appendix F Customer Support V500 Series User s Guide 288...
Страница 294: ...Index V500 Series User s Guide 294...