Specifications

HY-03 User Handbook
17
TECHNICAL SPECIFICATION
TECHNICAL SPECIFICATION
3
Accessories
Order Code Description
HY-03DTD Dial tone detect add-on board
HY-03CON Front panel conversion kit, HY-03S 19” rack-mount front to HY-03
free standing
HY-03SCON Front panel conversion kit, HY-03 free standing to HY-03S 19”
rack-mount front
HY-03TCON Front panel conversion kit, HY-03 or HY-03S, to HY-03T 19”
rack-mount front
Approvals Information
Sonifex is a BABT approved manufacturing facility with a license to build
telecommunications equipment and all telecom products are compliant with BS6301,
BS7002, BS415 and CTR21. The following product description is necessary for BABT approval
and provides information on the connection and operating conditions of the units.
Manufacturer
Sonifex Limited,
61 Station Road,
Irthlingborough,
Northants,
NN9 5QE
United Kingdom
Equipment Type
HY-03 telephone balance unit.
BABT Approval Numbers
HY-03 : S/3619/23/L/501792
Functions
The HY-03 Telephone Balance Unit is suitable for connection to B.T. exchange lines with a
series connected telephone at the handset port. The hybrid unit is used as a four wire to
two wire converter. Incoming calls received at the handset may be diverted to the hybrid
unit and produce a ‘telephone’ signal at the output of the unit. Signals presented at the
input are transmitted to the telephone line only. The HY-03 automatically balances the
telephone line.
Specied Systems
The HY-03 is suitable for connection to any exchange line forming part of a Public Switched
Telephone Network, PSTN, or a Relevant Branch system for PSTN lines or any extension.
This equipment is not suitable as an extension to a payphone. A denition of Relevant