Appendix F
ISDN Information
©
Polycom, Inc.
201
ViewStation FX/VS 4000 User’s Guide
ISDN Switches
Depending on the type of ISDN lines you are using, your service
provider may assign zero, one, or two SPIDs per line.
ISDN Errors
The following table describes ISDN standard cause values that are
sent from the ISDN switch to the router to indicate ISDN call status.
Although the cause values are standardized, each ISDN service
provider phrases the cause differently. Therefore, the causes shown
in the table might not be the exact messages that appear on your
television monitor.
Switch Type
SPIDs Allocated
AT&T 5ESS Custom
None
AT&T 5ESS NI-1
1 per B-channel
NT DMS-100 NI-1
1 per B-channel
NI-2
1 per device
Siemens EWSD NI-1
1 per B-channel
Siemens EWSD NI-2
1 per device
International (outside United States or
Canada)
None
Code
Cause
Definition
1
Unassigned number
The switch received the sent ISDN number in the
correct format; however, no destination
equipment uses the number.
2
No route to specified
transit network
The ISDN exchange can not recognize the
intermediate network through which to route the
call.
3
No route to destination
The destination address is not serviced by the
intermediate network through which the call is
routed.
6
Channel unacceptable
The specified channel does not provide sufficient
service quality to accept the requested
connection.
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Страница 178: ...Chapter 6 Troubleshooting ViewStation FX VS 4000 User s Guide 164 www polycom com ...
Страница 196: ...Appendix C V 35 Technical Information ViewStation FX VS 4000 User s Guide 182 www polycom com ...
Страница 210: ...Appendix D PRI Technical Notes ViewStation FX VS 4000 User s Guide 196 www polycom com ...
Страница 212: ...Appendix E Frame Rate Specification For ViewStation FX VS4000 ViewStation FX VS 4000 User s Guide 198 www polycom com ...