User Manual

INSTALLATION AND MAINTENANCE MANUAL
LYNX.sc E1 FAMILY
SPREAD SPECTRUM RADIOS
OCTOBER 1998
SECTION 3: INSTALLATION & ADJUSTMENTS PAGE 3-43
3.14 Additional Connections
There are additional customer connections which are optional and are not required to make the
LYNX.sc operational but may prove useful.
3.14.1 Orderwire Connection and Address Selection
Orderwire is a “telephone” type wayside service which allows users of the LYNX.sc radio to
establish voice communications from one radio to another, either directly to the companion far-
end, or through a repeater configuration, or several repeater configurations.
Telephone connection specifications:
REN (Ringer Equivalency Number) 1.0 B
Ringing Voltage 48 VDC, typical
(Ringing voltage is adequate for modern solid state ringers,
NOT for the older mechanical type ringers)
This Orderwire service does not affect the normal radio transmission of E1 traffic. Refer to Section
2.3.5 for the telephone specifications. For simple near-end to far-end communications, follow the
steps below:
1. Using a small screwdriver, set the address of both terminals by rotating the address rotary
selection switches on the rear panel of the LYNX.sc radio. The address is a two digit number
(from 01 to 99). Each LYNX.sc terminal in the network should have a unique address. This
address acts like a “phone number” for other users to call a particular terminal. Each LYNX.sc
terminal should have a unique address.
Radio pairs (links) are shipped from the factory with addresses set to
01 or 02. Therefore, if only one pair is being used, address selection
may not be necessary. Also, in a connected spur network, it may be
desirable to maintain orderwire telephone addresses between 01 and
08 because the address doubles as the NMS/TBOS net address
which is limited to the addresses 01 through 08 (see Section 3.14.3 for
more information).