Lucent Technologies Release 8.2 manual Uniform Dial Plan, How to administer UDP

Distributed Communications System B Private Networking

Uniform Dial Plan

Uniform Dial Plan (UDP) provides a common 4- or 5-digit dial plan (specified in the Dial Plan Record) that can be shared among a group of switches. Interswitch dialing and intraswitch dialing both require 4- or 5-digit dialing. UDP is used with an electronic tandem network (ETN); main, satellite, and tributary switches; and Distributed Communications Systems (DCS). In addition, UDP can provide uniform 4- or 5-digit dialing between 2 or more private-switching systems without ETN, main, satellite, and tributary switches, or DCS.

How to administer UDP

Form		Field
Dial Plan Record	•	Uniform Dial Plan
Second Digit Table	•	UDP Extension Search Order
Uniform Dial Plan	•	All
AAR and ARS Digit Analysis Table	•	All
AAR and ARS Digit Conversion	•	All
Table
Node Number Routing	•	Route Pat
Extension Number Portability	•	All
Numbering Plan
Route Pattern	•	All

Note: On the Uniform Dialing Plan form, if you change the Ext Code and Type fields from a 4-digit or 5-digit extension number to none, a warning message informs you that all UDP extension codes will be lost. The same warning message displays when you change the Ext Code and Type extension numbers from 4-digits to 5-digits or from 5-digits to 4-digits.

Detailed description UDP routes calls off the local switch by converting the extension number into a private-network number with 7 digits. This number is formed by prepending a 3-digit code (of the form XXX) to the (last) 4 digits of the extension number. 3 types of conversion are supported: UDPCode, AARCode, and ENPNode.

•For UDPCode and AARCode, XXX is a 3-digit private-network location code, and the result is analyzed and routed via Automatic Alternate Routing (AAR). UDPCode conversion prohibits digit conversion via AAR; AARCode conversion permits it, just as if you dialed the AAR number instead of the extension.

•For ENPCode, XXX is called an Extension Number Portability (ENP) code. It is not used for routing; node-number routing is used instead. The ENP code is chosen based on the first 1 or 2 digits of the dialed string. Because it is not used for routing, the ENPCode can be independent of location.

		Administration for Network Connectivity
350	CID: 77730	555-233-504 — Issue 1 — April 2000