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

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

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......

PRACTICES D4-OCU DP (ETR) ALL-RATE OFFICE CHANNEL UNIT DATAPORT WITH EXTENDED TRANSMIT RANGE INSTALLATION/MAINTENANCE CONTENTS 1. GENERAL ...................................................................1 2. INSTALLATION...........................................................2 3. CONNECTIONS..........................................................3 4. TESTING.....................................................................3 5. AUTO LOOP DISCONNECT ......................................

1 2 3 4T1/E1 T1/E1 1 2 3 4 QUAD IMA Module 1179611L1 The Quad IMA Module terminates up to 4 T1s (DSX-1 or DS1) and performs Inverse Multiplexing over ATM (IMA) for up to 4 T1 IMA links in the Total Access® 1200. It can provide up to 24 ports of ADSL plus POTS toward customers. The following features are supported on the Quad IMA Module: ¦ Performs Inverse Multiplexing over ATM (IMA) for up to four T1 IMA links ¦ Support one to four T1s (both short and long haul DSX-1 and DS1) ¦ Supports one IMA

STATUS RED Alarm on any HTU-C loops, HRE loops, DSX or DS1 interface . FLASHING Signal Quality of 0 or No Sync on at least one loop YELLOW Loopbacks active . FLASHING In-band loopbacks armed GREEN Functioning properly . FLASHING ES, SES, or BPV detected at either DSX or DS1 interface ¦ Used to access the HDSL utilities menu tree via VT100 emulation software such as terminal, Hyper Terminal – Private Edition and ProComm Plus. Provision terminal port as follows: Data Rate — 9.6 kbps, 19.2 kbps