Table of Contents
Advertisement
Hardware Installation
Leased Line Connections
2.4 Leased Line Connections
2.4.1 Types of Leased Line connections
There are two types of leased line connections that can be used with the VT-MODEM-4WW and they are described
below.
1. Leased line through the telephone company
Using a leased line through your telephone service provider is the best and most reliable way to communicate
between two Sixnet VT-MODEM-4s because the line quality is guaranteed and maintained by the telephone
company. With this connection two telephone lines are basically tied together to create a logical line through
the phone system connecting the VT-MODEM-4s together.
2. A dedicated cable between two modems
The modems will communicate when a physical cable is connected between two VT-MODEM-4s. Please note that
Sixnet doesn't claim any compatibility with 3
cables that should be used, but the user should adhere to the sensitivity and attenuation ratings listed below.
Use the following wiring when connecting two modems together (standard telephone cable wiring).
6
1
Jack Type: Miniature 6-position modular
R1, T1: Line 1 connections.
R2, T2: Line 2 connections.
Note: The connection above shows pins 2 and 6 (Ring2 and Tip2), but they are not required. The
VT- MODEM-4 uses only two wires to communicate.
VT-MODEM-4 Hardware Guide
rd
Transmit Level (dBm)
Receiver Sensitivity (dBm)
1 NOT USED
2 RING2
3 TIP1
4 RING1
5 TIP2
6 NOT USED
party leased line modems. Sixnet has no specifications on the
-11dBm
-43 dBm (worst case)
Revised 2018-12-10
Drawing No. LP1087-A
2-13
Advertisement
Table of Contents
