Sheet 2: INSTALLATION
39PJC00001AJD – Issue 2
Please read this sheet carefully before starting. Use the informa-
tion to plan and check positioning of equipment before installing.
1. Installation.
This sheet details the installation of a 1+5 Sapphire system. This
installation may be done by the system user.
1.1 Parts Supplied With 1+5 Sapphire.
Master Terminal: With 3m lead.
Distribution Box: With 1.2m mains lead and 3m line jack lead.
Screws: 2 Nº.8 roundhead screws and wall plugs.
Labels: For the Master Terminal face plates.
If any parts are missing, consult your Sapphire dealer.
1.2 Parts Required.
To complete the Sapphire installation requires the following parts:
Master Jack Sockets: One per extension phone (excluding
Master Terminal).
Screws and wall plugs: For the extension sockets.
Extension cable: Single-pair, PVC covered, 0.5mm diameter,
tinned copper wire (BT specification CW1308). Maximum length
200m per extension and maximum loop resistnace 34 ohms.
Cable Clips: Recommended every 300mm of cable.
Mains Plug: 13-amp plug fitted with 3-amp fuse.
Cable Ducting: Optional.
1.3 Tools Required.
Power drill
Nº.8 Masonry drill bit
Wire cutters and strippers
Small screwdrivers: Slot and cross recess.
Large slot screwdriver
IDC Tool: Required if IDC slot terminal, jack socket boxes used.
1.4 Installation.
1.4.1 Siting Requirements.
•Avoid locations that expose the equipment or cabling to
excess heat, dust, humidity and especially damp or
condensation; e.g. do not install any parts in bathrooms.
•Avoid locations close to other electrical equipment such as
motors or switch gear. Do not install extension sockets within
50mm of a.c. mains sockets. Do not run extension cables
close to mains electrical cables.
•Remember when selecting the location of the first extension
socket box (EX2), that this is the only phone that will work
during a power failure.
The cable lengths between the various parts of Sapphire are:
Distribution: to mains power socket = 1.2m
Box to exchange line socket = 3m
to Master Terminal = 3m
to extension sockets = 200m (maximum)
1.4.2 Cable Routing.
Besides the siting requirements opposite, remember the following:
•Choose a route for each cable that is safe from damage
by feet, doors or other hazards.
•Use cable clips to secure the cable at a minimum of
300mm intervals.
•Do not run the extension cables closer than 50mm to
mains power supply cables.
•Allow sufficient spare cable (200mm) at either end for
final connection and for reconnecting if necessary.
•A separate cable must be used for each extension.
Multicore cable must not be used.
1.4.3 Master Jack Sockets.
The extension Master Jack socket must be mounted vertically on
a wall surface. For each extension:
1. Remove the cover from the Master socket box by releasing the
two retaining screws.
2. Choose and breakout a cable entry point for the extension cable.
3. If necessary mark, drill and plug two fixing screw holes in the
wall.
4. Screw the socket box to the wall and feed in the extension cable.
5. Remove approximately 50mm of cable sheath. If the socket
has screw terminals bare 5mm of the wire ends.
6. Connect one wire to terminal 2 and the other wire to terminal 5
of the socket. If the socket uses IDC slot connectors use the
proper wire insertion tool. Do not use any other edge to insert
the wires as this will damage the terminal slot.
7. Secure the cable using the cable clamp.
8. Replace the socket box cover.
Master Jack Socket Box. Front
Lid.
Cable
break-outs
Fixing
holes.
Socket with screw terminals. Socket with IDC terminals.
Components on reverse
of socket box lid.
Socket
Box.
SAPPHIRE
TECHNICAL NOTICES
Sapphire is approved for connection to telecommunication sys-
tems operated by British Telecommunications plc, Kingston Com-
munications or Mercury Telecommunications Limited., subject to
the following conditions.
1. The Sapphire Telephone System is suitable for connection to Exchange
lines which provide Loop Disconnect (LD) or Multi-Frequency (MF) signal-
ling. Sapphire is connected to the exchange line by means of an attached
cord fitted with a jack plug that complies with BS6312 (1+5 systems) or will
be hardwired (2+8 systems).
2. Only telephones which have been approved to BS 6317 (1982) may be
connected to Sapphire (these always carry the circular green approval la-
bel). Sapphire must be used with Timed Break Recall (TBR).
3. Interconnection directly or by way of any other apparatus, of ports marked
in accordance with BS 6301 paragraph 4.3.1(a) with ports not so marked,
may produce hazardous conditions on the BT network. Advice should be
sought from a competent engineer before such a connection is made.
4. The Sapphire system is designed to operate with a mains supply of 240V
ac. 47-63Hz with a maximum power consumption of 20W.
5. The system is not suitable for use as an extension to a payphone.
6. Wiring from the Sapphire Distribution Box to the extensions must be con-
fined to the same premises. The extension cable must not exceed the
length of 200 metres and a loop resistance of 34 ohms. A separate cable
must be used for each extension, multi-core cables must not be used.
7. Where installations include the use of external exposed cabling, protec-
tion against induced over-voltages must be provide by gas discharge tubes
(Protectors type 14A or 15A), mounted in suitable housings and located be-
tween each exterior extension or exchange line and Sapphire. Only the local
telephone authority may install this equipment.
8. It is permitted to connect Sapphire as a satellite to a PBX (Private Branch
Exchange). However, satisfactory performance cannot be guaranteed with
every possible combination of host and subsidary system.
9. The Sapphire has a Ringer Equivalence Number (REN) of 1 and the ex-
tension port has a REN of 2. REN is a number which is assigned to items of
telephone equipment, in order to prevent telephones overloading the line
and causing misoperation of the ringers. The maximum REN value con-
nected to an exchange line is 4.
10. Refer all servicing to qualified personnel or to the Customer Servicing
Department at the address given on the back of this handbook.
11. The line cord and mains cable must be disconnected before remov-
ing the cover of the Sapphire Distribution Box.
12. The Sapphire System must be installed and operated in an environment
within the following specific limitations:
Temperature:Operating
–
0°C to 40°C Humidity: <95°
Range Storage
–
20°C to 70°C (Relative)
Sheet 2: INSTALLATION JCMG207b
