2500 FT1 CSU/DSU SERIES

LOOP-T 2500

FT1 CSU/DSU SERIES
STAND ALONE

(OLD DESIGNATION: T-500)

Features

DSU functionality integrated with an intelligent CSU in a compact package

SNMP Management or terminal console port

Connection to LAN/WAN, CAD/CAM, or Hosts to T1 Network Services

Compliance with ANSI T1.403, AT&T PUB 54016 and 62411

2-line by 16-character LCD

Description

Loop Telecom’s Loop-T 2500 FT1 CSU/DSU series provide an economic solution to T1 network access cost, when only a partial of 24 DS0 channels is needed. This product series support Extended Superframe Format (ESF) which makes possible continous error checking, performance polling, and in-service diagnostics. With DTE port operating from 56 to 1536 Kbps, Loop-T 2500 FT1 CSU/DSU enables users to interconnect LANs and WANs, CAD and CAM, video conference, mainframe hosts, and others.

Loop-T 2500 FT1 CSU/DSU series support local control and diagnostics using 2-line by 16-character LCD and keypads. This enables users to execute in-service diagnostics and fault isolation. Ten LEDs on the front panel provide both line side and DTE side status indicatiors. Using SNMP Network Management Systems and Telnet connection, users can remotely control and diagnose Loop-T products from anywhere.

Ordering information To specify options, choose from list below:
Model	SNMP
Loop-T 500-S-DTE	NO
Loop-T 500-S-DTE-J	NO
Loop-T 500-S-SNMP	YES
Loop-T 500-S-SNMP-J	YES
Where DTE= 11 for V.35 DTE interface with M34 connector 22 for V.35 DTE interface with DB25 connector 33 for EIA530 DTE interface 44 for X.21 DTE interface 55 for RS232 DTE interface 66 for RS449 DTE interface with a modular adaptor
Example
Loop-T 500-S-11= V.35 DTE interface with M34 connector, no SNMP
Loop-T 500-S-33-SNMP-J= EIA530 DTE interface, with SNMP and advanced jitter

LOOP-T Ô 500 FT1 CSU/DSU SERIES PRODUCT SPECIFICATION (Stand Alone)
Network Line Interface (DS-1 Interface)

Line Rate	1.544 Mbps ± 50 bps	Framing	D4 / ESF (selectable)
Line Code	AMI / B8ZS (selectable)	Connector	RJ48C
Input Signal	DS-1 form 0 dB to -26 dB w/ALBO	Output Signal	DSX-1 w/0, -7.5, -15 dB LBO
Surge Protection	FCC Part 68 SubPart D	Pulse Template	Per AT&T TR 62411

Customer DTE Interface

A. Single DTE Data Port

Data Rate – N*56 or 64 Kbps * n ( n = 1 - 24 )

Connector - V.35(M34 or BD25), EIA530(DB25), X.21(DB15), RS232(DB25), RS449(via modular adaptor)

B. DS0 Mapping

Maps 2 sets of DS0 map with provision for automatic switching between the 2 maps

Remote Send Send active DS0 maps to remote site (in ESF mode only)

Performance Monitor

Performance Memory - The last 24 hours performance in 15-minute intervals

Monitor Registers - Line, user, and remote site (in ESF mode only)

Performance Reports - Report includes Date & Time, Errored Second, Unavailable Second, Bursty Errored Second,

Severe Errored Second, Controlled Slip Second, and Loss of Frame Count

Alarm History - Report includes Date & Time, Alarm Type (i.e. Master Clock Loss, Yellow Alarm, AIS, LOF, BPV,

ES, CS), and Location (i.e. line, DTE)

Alarm Queue - Contains 40 alarm records which record the latest alarm type, and date & time

PRM Performance - ANSI PRM (Performance Report Messages) (selectable)

System Configuration Parameters (All in non-volatile memory)

Active Configuration - Current working configuration

Stored Configuration – User stored configuration

Default Configuration - Manufacture default configuration (permanent)

Console Port

Connector - RJ-11 at Front Panel

Electrical - RS232 interface

Protocol - Menu driven VT-100 terminal, or Embedded SNMP (optional)

Diagnostics Test

Loopbacks - Line Loopback, Payload Loopback, Local Loopback, and DTE Loopback

Test Pattern - 20 bits QRSS, 3-in-24, 1-in-8, 2-in-8, 1:1 patterns

Idle Channel - Use of idle channel to perform QRSS diagnostic test

Remote Loopback - AT&T inband Loopback & Payload Loopback, ANSI Line Loopback, Payload Loopback

DTE Channel Loopback (V.54 or Loop proprietary)

Front Panel

Keypad - 4 keys: left arrow, right arrow, ESC, and ENTER

LCD - 2-lines by 16-characters LCD

LED - 10: POWER, LINE [SYNC/TEST, LOF, BPV,YEL/AIS], DTE [TEST, TD, RD, RTS, CLK-LOSS]

Physical/Electrical

Dimensions - 8½ " x 2¼ " x 11¼ " (WxHxD)

Power - 100-240Vac, 5 Watts

Temperature range 0-50° C

Humidity 0-95%RH (non-condensing)

Mounting - Desk-top stackable, 19/23 inch rack mountable

Compliance

AT&T TR 54016 - Requirements for interfacing digital terminal equipment to services employing the ESF

AT&T TR 54019 - International ACCUNETâ digital services description and network interface specifications

AT&T TR 54019A - Addendum to TR54019

AT&T TR 62411 - ACCUNETâ T1.5 service description and interface specification

ANSI T1.403-1989 - Carrier to customer installation - DS1 metallic interface

FCC Part 15 Class A, UL1459, CSA 22.2 No. 225

FCC Part 68, DOC-CS-03