Dial Plan Concepts and Overview
259
Call Process Flow
The dial plan configuration file is a key component of inbound and
outbound call processing. The dial plan tables in the configuration file
process
incoming
calls in this order:
1
Incoming Dial Plan Table
2
Pretranslator Table
The dial plan tables process
outgoing
calls in this order:
1
Internal Dial Plan Table
2
Least Cost Routing Table
After pretranslation (if performed), the final translation process routes the
call to the destination.
Inbound and
Outbound Call
Processing
The system routes all inbound and outbound calls through the dial plan.
Inbound Call Processing
The system uses the
Incoming
table to process inbound calls. The system
can also use
pretranslators
to perform digit manipulations on incoming
calls before it uses the Incoming table.
Each pretranslator operation performs a digit manipulation operation on
the dialed digits. For incoming calls, if the DID/DDI (Direct Inward
Dial/Direct Dial Inward) range matches the internal extensions, the dial
plan requires no pretranslator. However, you can use pretranslators to
map nonmatching dialed numbers on an incoming DID/DDI channel to
desired internal extensions. See the example in Customer Requirement 1
in
“Sample Solutions Using Dial Plan Configuration File Commands”
on
page 320
.
Outbound Call Processing
The system processes outbound calls using the
Internal
dial plan table or
the
Least Cost Routing
table. You can add entries to the Internal dial plan
table to match the system to your service. See Customer Requirement 2
in
“Sample Solutions Using Dial Plan Configuration File Commands”
on
page 320
.
If you have entries in both the Least Cost and Internal tables for the same
purpose, the behavior of the dial plan can be confusing. 3Com
recommends that you accomplish least cost routing using Internal Table
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Страница 18: ...18 ...
Страница 22: ...22 ABOUT THIS GUIDE ...
Страница 26: ...26 CHAPTER 1 INTRODUCTION ...
Страница 74: ...74 CHAPTER 3 FEATURE SETTINGS ...
Страница 130: ...130 CHAPTER 5 TELEPHONE CONFIGURATION ...
Страница 156: ...156 CHAPTER 7 CALL DISTRIBUTION GROUPS ...
Страница 194: ...194 CHAPTER 8 PSTN GATEWAY CONFIGURATION ...
Страница 256: ...256 CHAPTER 10 SIP MODE OPERATIONS ...
Страница 328: ...328 CHAPTER 11 DIAL PLAN ...
Страница 360: ...360 CHAPTER 13 DOWNLOADS ...
Страница 370: ...370 CHAPTER 14 LICENSING AND UPGRADES ...
Страница 406: ...406 CHAPTER 16 NETWORK MANAGEMENT ...
Страница 412: ...412 CHAPTER 17 COUNTRY SETTINGS ...
Страница 450: ...450 APPENDIX A INTEGRATING THIRD PARTY MESSAGING ...
Страница 456: ...456 APPENDIX B ISDN COMPLETION CAUSE CODES ...
Страница 510: ...510 APPENDIX F OUTBOUND CALLER ID AND 911 SERVICE ...
Страница 546: ...546 APPENDIX G NBX ENTERPRISE MIB ...
Страница 566: ...566 GLOSSARY ...
Страница 578: ...578 INDEX ...
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