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D R A F T
4.4.4 Telephone System
From 10th Feb 2014, CAT-5E cables should be installed, Summary of telephone cables required:
instead of standard telephone cables. These cables should • 4No. 4-pair (or equivalent) from phone
still be terminated to standard telephone sockets. system box position to location of BT DP.
• 8No. CAT-5E cables from phone system box
Standard Domino’s phone line requirement is: position to front counter for handsets etc.
• 5-line group for the main store number • 1No. CAT-5E cable from phone system box
• 1 line ADSL enabled for IT link position to drivers table location
• 1 line ADSL enabled for CCTV link and • 2No. CAT-5E cables from phone system box
modem, plus Validator safe if installed position to “wiring only” wall locations (See
• 2 lines for PDQ machines project drawing for position)
• 1 line for security alarm link • 2No. CAT-5E cables from phone system box
position to RJ45 sockets in office Comms
As part of the electrical installation, a CAT-5E Cupboard for Caller ID.
cable from the location of the telephone system • 1No. CAT-5E cable from phone system box
cabinet must be installed to: position to alarm system location (typically
• The extension handset positions (typically in the office)
7No. in total) • TOTAL = 18 telephone system cables
• The modem/CCTV (under counter)
• The alarm (in office) Telephone system installation engineer is
• The PDQ’s machines (2No. typically under required to (this list does NOT include CAT-5 and other
counter) cables which are to be run in addition, as part of the
• The ADSL (under counter) computer system):
• Install the telephone system cabinet
Leaving each of the above in open back boxes, complete and terminate the internal
the electrician must: extension lines into it, including identification
• Lay in 2No. CAT5 cables from the phone of cables and labelling them as necessary
system cabinet position to the Comms • Connect previously laid-in link cables
Cupboard in the office, terminated in RJ45 between the BT DP and telephone system.
sockets in back boxes, for Caller ID. • Terminate the previously laid cables for BT
• Lay in 4No. 4-pair cables (min. 16 pairs in total direct lines to the modem, alarm, PDQ’s and
required) from the position of the phone ADSL positions. (NOTE: the alarm line should be
system cabinet to the position of the BT DP. terminated within 1 metre of the alarm box, using a
• In some cases ISDN is installed for the main terminal block with screw terminals)
number lines instead of Analogue lines, if this • Supply and install telephone socket
is the case then one CAT5 cable should be faceplates to all of the open back boxes
provided per circuit. (Please note that there is no installed by the site electrician. All sockets to
need to provide a 4-pair cable for each line) be labelled
• leave all cables with identifying labels at Note that to make effective use of space in the counter,
BOTH ends. the telephone sockets should be of the ‘modular’ type.
4.4.4 Telephone System 3 February 2016
