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NEC NEAX NDA-24349 User Manual

Page 218

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Chapter 10 System Input/Output (I/O) Interfaces

Page 10-10

NEAX 2000 IPS

Request for Proposal (RFP) Reference Guide

NDA-24349, Issue 4

PMS Interface

ƒ

PMS with AP00-B on an RS-232C Interface

Item

Description

Data Rate

1200, 2400, 4800, 9600 bps, asynchronous, software
selectable

Note 1

Operating Mode

Half Duplex

Electrical Interface
Characteristic

EIA RS-232C electrical standard interface

Signal Form

EIA RS-404

Interface Distance

Max. 15 m (49.2 ft.) between PBX and PMS (without modem)

NOTE 2

Word Framing

10 bits (1 start, 7 data, 1 parity, 1 stop) or 11 bits (1 start, 7
data, 1 parity,2 stop)

Parity VRC

No parity, even parity, odd parity; selected by PBX system
data

Parity LRC

Exclusive OR of message text

Frame Contents

US ASCII 7-bit codes

Control Contention

Priority Sequence

Primary office: PBX
Secondary office: PMS

Note 1:

For the Port 1 and Port 3, data speed 9600 bps cannot be used.

Note 2:

When modems are used, full duplex asynchronous type modems are required.

ƒ

Bulit in PMS over IP

Item

Description

Physical layer

Ethernet

Connection Layer

The Ethernet packet format complies with the DIX standard

TCP/IP core protocol

ARP, IP, ICMP, UDP, and TCP

Socket interface

Complies with the 4.3BSD socket interface

Transport Protocol

TCP stream-type protocol

Application Port Number

60050 (Fixed)

Number of Connections

1 conncetion

Client/Server

Server: PBX
Client: PMS

Frame Contents

US ASCII 7-bit codes

Pseudo Normal Restriction
Condition

1. At connection release
2. Status monitoring text