NEC NEAX1000IVS system manual Single Line Device Interface

NAP-200-007

Sheet 54/55

Termination of Cables on MDF

(15)Single Line Device Interface - Recommended Method

The NEAX1000 does not provide Ring Generator Voltage or Message Waiting light supply. An external Ring Generator may be installed, but there is no connector for interfacing a Message Waiting power supply. It is therefore recommended that single line devices be interfaced to the system via Analog Port Adapters with Ring, which are operating in Dual Port Mode. See Figure 007-42.When provided with optional external Ring Generator, ensure that connection to output terminals of Ring Generator are in accordance with National Electrical Code. Ring Generator shall be a UL-listed type.

				VIRTUAL SLOT LT09
LT	MP
08
8
D
L		P	0051	LEN to be used for
C			0050	station assignment
		W
Note		R	0049	of station connected
			0048	to APR

	Dterm
SINGLE LINE DEVICE	APR
		APR in Dual Port Mode
		for Single Line Interface

Note: When upper 4LENs of 8DLC, mounted in LT08, is used for Dual Port Mode Extension Assignment, no system ports are lost. The lower 4 LENs of Virtual Slot LT09 are used for Station Assignment of Analog Port Adapter Station.

Figure 007-42 Single Line Device Interface

NDA-24219CHAPTER 3

Page 103

Revision 2.0