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CONTENTS
1.0 Warranty & Compliance Information ........................................ 4
1.1 Compliance................................................................................... 4
EMC Compliance.......................................................................... 4
Safety Compliance: ...................................................................... 4
PSTN Regulatory Compliance:..................................................... 4
1.2 CE Notice...................................................................................... 5
1.3 Authorized European Representative........................................... 5
1.4 Service.......................................................................................... 5
1.5 Safety When Working With Electricity .......................................... 6
2.0 General Information.................................................................... 7
2.1 Features........................................................................................ 7
2.2 Description.................................................................................... 7
3.0 PPP Operational Background.................................................... 9
3.1 Applications .................................................................................. 9
4.0 Configuration ............................................................................ 11
4.1 DIP Switch Configuration............................................................ 11
Switch SW1 ................................................................................ 12
Switch SW-1 through SW1-5 ............................................... 12
SW1-6 and SW1-7 Clock Modes ......................................... 13
Switch SW2 ................................................................................ 14
Switch SW2-1 Line Coding: HDB3 (default) ........................ 14
Switch SW2-2: CRC-4 Multiframe ....................................... 15
Switch SW2-3 Data Inversion .............................................. 15
Switch SW2-4: Remote Digital Loopback Type ................... 15
Switch SW2-5 Front Panel Switches ................................... 16
Switch SW2-6: V.54 Response Disabled (default) .............. 16
5.0 Installation................................................................................. 17
5.1 Connecting to the G.703 Network............................................... 17
Connecting Dual Coaxial Cable (75 ohm) to the G.703 Network 17
Opening the Case....................................................................... 18
Connecting the Twisted Pair (120 ohm) to the G.703 Network .. 18
5.2 Connecting the 10Base-T Ethernet Port to a PC (DTE) ............. 19
5.3 Connecting the 10Base-T Ethernet Port to a Hub ...................... 19
5.4 Power Connection ...................................................................... 20
Universal AC Power (100–240 VAC).......................................... 20
DC Power ................................................................................... 20
6.0 Operation................................................................................... 21
6.1 Power-up .................................................................................... 21
6.2 LED Status Monitors................................................................... 21
6.3 Loop (V.54 & Telco) Diagnostics ................................................ 23
Operating Local Loopback (LL) .................................................. 23
Operating Remote Digital Loopback (RL)................................... 24
CSU Loop................................................................................... 24
Using the V.52 (BER) Test Pattern Generator ........................... 25