Channel Select Closed ............. Alternate Open ............... Contiguous Description Selects between alternating and contiguous DS0 channels. SW1-2 ............. Auto Code Detect Closed ............. Auto Open ............... Manual SW1-3 ............. Manual Code Select Closed ............. AMI Open ............... B8ZS When this switch is closed, the unit automatically detects the line code as B8ZS or AMI. When SW1-2 is open, SW1-3 open selects B8ZS line code, while SW1-3 closed selects A

The HTU-R then sets its configuration to match the HTU-C M. Rotary Switch Used to select operation of the line build-out equalizer in series with the DSX-1 output. R-HTU Function Description REM Remote Loopback C-C M is not in loopbackIf the HTU ssing REM activatesthe, pre k towards the customer. If the HTU-C M isin loopback,loopbac pressing REM deactivatesthe loopback. LOC Local Loopback If the HTU-R isnotin loopback, pressing REM activatesthe k towards the customer. If the HTU-R isin loopback,

The signal may appear hotter than it should be. 2 Loopback timeout must be selected prior to initiating a loopback. 3 60 and 120 minutes is selectable from the craft interface. 61245.001L2-13A Section 61245001L2-13, Issue 1 ADTRAN PRACTICES 5th Gen HTU-C/HTU-R Quick Start guide HDSL DEPLOYMENT GUIDELINES The ADTRAN HDSL system is designed to provide DS1 based services over loops designed to comply with Carrier Service Area (CSA) guidelines. CSA deployment guidelines are given below. 1. All loops

MODEL ACT PSU ADVANCED COMMUNICATIONS TERMINAL POWER SUPPLY UNIT INSTALLATION/MAINTENANCE CONTENTS 1. GENERAL .....................................................................1 2. INSTALLATION ............................................................1 3. CONNECTIONS ............................................................2 4. FACEPLATE INDICATORS .........................................2 5. MAINTENANCE ............................................................2 6. WARRANTY AND CUST

INSTALLATION ............................................... 2 3. MAINTENANCE ............................................... 2 4. SPECIFICATIONS ............................................ 3 5. WARRANTY AND CUSTOMER SERVICE ... 3 FIGURE Figure 1. Total Access 1000 DSLAM Local Power ATM PSU .................................................. 1 TABLES Table 1. Compliance Codes ...................................... 2 Table 2. Specifications .............................................. 3 1. GENE

Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. Users should not attempt to make such connections the

A power failure condition takes precedence over other failures; both a power and temperature failure condition results in a fast blinking RED LED. Amber (slow blink) Over-temperature condition Test LED Off Description Not used If power is applied to the ATLAS 890 unit and there is no active Controller, the front panel LEDs will be in an indeterminate state. The controller must complete its power up sequence before the LEDs are valid. Functionality The ATLAS 890 AC Power Supply furnishes

The DSU III S2W incorporates advanced features utilizing microprocessor and VLSI technology in a standalone package. Using the Northern Telecom T-Link® rate adaption protocol and time compression multiplexing (TCM), the DSU III S2W transports customer synchronous (up to 64 kbps) or asynchronous (up to 57.6 kbps) data over a 2-wire local loop to the network. Both EIA-232 and V.35 DTE interfaces are provided for all data rates. The DSU III S2W supports manual (invoking a stored number or keypad

PRACTICES 2FXS/DPO PM CONTENTS 1. GENERAL ...................................................................1 2. INSTALLATION...........................................................2 3. CONNECTIONS..........................................................4 4. TESTING.....................................................................4 5. MAINTENANCE ..........................................................5 6. WARRANTY AND CUSTOMER SERVICE ................5 FIGURES Figure 1. 2FXS/DPO......