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Example: Carriers commonly pass either the last 3 digits or last 4 digits of
the number for each incoming call.
Sometimes the last digits of the telephone numbers the carrier assigns to
you do not match the telephone extension numbers you want to use for
internal calls. You can create entries in your Dial Plan configuration file to
translate the incoming numbers into the corresponding extension
numbers.
Example: You want to use internal extensions from 4000 through 4999,
but the local telephone carrier assigns you numbers from 617-555-3500
through 617-555-4499. You can create translator entries in the Dial Plan
configuration file to translate an incoming digit sequence such as 3795
into extension number 4295, and a sequence such as 4213 into 4713.
The configuration would require several translator entries to handle
subsets of the total range (for example, one set of entries would handle
incoming digit sequences from 3500 through 3599, another set of entries
to handle 3600 through 3699, and a set of entries to handle each of the
other sequences in which the first two digits were unique - 37XX through
44XX).
If the DDI/DID numbers match your internal extension numbers, the
translator entries in your Dial Plan configuration file can be much simpler.
Example: You plan to use internal extensions from 100 through 299, and
the local telephone company assigns you numbers from 617-555-4100
through 617-555-4299. If the local telephone carrier passes you 3 digits,
you need no translator entries in the Dial Plan configuration file. If the
carrier passes you 4 digits, you could add a single set of translator entries
to the configuration file to remove the first digit (4) and use the
remaining 3 digits as the internal extension.
E911 Connectivity
The NBX 100 provides E911 (emergency) connectivity if the T1 or E1
Digital Line Card is configured for ISDN PRI (Primary Rate Interface)
signaling. The NBX 100 provides the calling number (ANI) so that the
emergency services personnel can determine the location of the caller
from the E911 database. You must update the CO (PSAP) databases.
Summary of Contents for NBX 100
Page 1: ...http www 3com com NBX 100 Installation Guide Release 2 8 Part No 900 0026 01 November 2000 ...
Page 12: ......
Page 18: ...18 ABOUT THIS GUIDE ...
Page 128: ...128 CHAPTER 2 CONFIGURING THE DIAL PLAN ...
Page 196: ...196 CHAPTER 4 CONFIGURING NBX 100 SYSTEM LEVEL SETTINGS ...
Page 238: ...238 CHAPTER 6 SETTING UP USERS AND FEATURES 6 Click Apply to effect the changes 7 Click OK ...
Page 268: ...268 CHAPTER 7 CONFIGURING DIGITAL LINE CARDS T1 E1 AND BRI CARDS ...
Page 286: ...286 APPENDIX A NBX 100 SYSTEM SPECIFICATIONS ...
Page 290: ...290 APPENDIX B T1 AND ISDN PRI SERVICES CIRCUIT PROVISIONING ...
Page 294: ...294 APPENDIX C GUIDELINES FOR REMOTE AUDIO DEVICE CONNECTIONS ...
Page 306: ...306 INDEX ...