NEC nd-20292 manual Chapter Least Cost Routing LCR

ND-20292

APRIL, 1990

CHAPTER 7

LEAST COST ROUTING (LCR)

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE

710	GENERAL					700-l
720	EQUIPMENT			IDENTIFICATION
720.1		General				700-2
720.2		LCR-E	ETU			700-2
720.3		Programming		Computer		700-2
730 INSTALLATION OF LCR-E ETU
	730.1	General				700-4
	730.2	Installation		of LCR-E	ETU	700-5
	730.3	Switch	SW1 Setting			700-5
	730.4	Switch	DIP1 Setting			700-5
	730.5	Switch	SW2 Setting			700-6
	730.6	Routing	the RS-232C		Cable	700-6

730.7Mounting the RS-232C

Connector	700-6
730.8 Verifying SW2 Setting	700-6

740 INSTALLATION OF PC-8300

740.1	General	700-6
740.2	AC Power Adapter	700-6
740.3	Battery Backup	700-7

740.4Floppy Disk Unit PC-8231A

Connection	700-7
740.5 Printer Connection	700-8

740.6PC-8300 Connection

	To LCR-E ETU	700-8
750 PROGRAMMING
750.1	General	700-9
750.2	How To Use This Section	700-9

750.3Programming System NPM

	for LCR	700-9
750.4	LCR Programming Construction	700-13
750.5	Initializing the PC-8300	700-17

750.6Initializing IBM Compatible PCs 700-19

750.7Programming the LCR-E ETU 700-20

750.8 Input of Data 700-29

750.9Explanation of LCR Commands 700-33

750.10 Error Messages 700-57

SECTION DESCRIPTION PAGE

760 ALGORITHMS

760.1	CPU Processing for LCR	700-59
760.2	LCR Processing	700-60

770 JOB SPEC SAMPLES

770.1	Area Code Tables		700-64
770.2	Weekly Schedule Tables		700-68
770.3	Daily Schedule	Tables	700-70
770.4	Route Advance	Tables	700-72
770.5	Route Tables		700-74
770.6	Office Code Tables		700-76

770.7Extra Code Tables and

Home NPA 700-78

SECTION 710

GENERAL

The Least Cost Routing (LCR) feature is used by the system to select the most economical route (line) when originating outside calls.

The Electra Mark11 provides this feature as an option

and requires the installation of an LCR-E ETU. Additionally, a portable computer PC-82OlA/PC-8300 or APC IV manufactured by NEC Corporation (or equivalent) is required to program the LCR feature.

The LCR feature provided with the Electra Mark11 Digital Telephone System can select lines, such as FX

(Foreign Exchange), SCC (Specialized Common

Carrier), Outward WATS (Wide Area

Telecommunications Service), DDD (Direct Distance Dial), and Tie lines. LCR directs the calls through the least expensive route, based on the number dialed, the time of day, and the day of the week, as previously programmed in the LCR package.

LCR cannot access CCSA (Common Control Switching Arrangement) lines or incoming only lines such as DID

(Direct Inward Dial) or Inward WATS lines. In addition, the LCR feature cannot be used to place operator, credit card, international, or uniform dialing calls. Manually selecting a trunk bypasses LCR.

700 - 1