Installation manual

Figure 2.6 - UK Single Line Telephone Connection
(( UK Installations should take note of the ringer module options
described above.
UK - BT Highway (ISDN)
Comfort cannot be used across digital lines, however, the service such
as BT Highway has two analogue sockets available on the Junction Box.
Thie main line is provided with a Master Socket, connect from this
socket directly to Comfort’s TEL IN socket and Comfort’s TEL out should
be connected to a new master socket which will feed the house
extension sockets. This is important to enable the phones to ring from
both the doorphone and an external phone call. Additionally, if you find
problems with dialling out through Comfort using local phones (ie. You
hear a BT recorded message) try reversing the polarity of the incoming
line into Comfort, ie, reverse the connnections A and B leading into
Comfort.
Remember that the analogue port may not function at times when both
digital lines are being used for a fast internet 128k connection and
could result in a ‘phone trouble condition’ being generated on Comfort.
This (Line Cut) may de disabled if absolutely necessary (See next item).
Parallel Phone Connections
If it is not possible to run the incoming telephone line directly to the
TEL IN terminals, it is possible to connect TEL In parallel with other
phones. See Worksheet Table 35 and 17 under “Ignore Line Cut or
phone trouble” setting.
(( This method of connection is not recommended especially for
UL installations or monitored systems, and is only applicable to
Home Automation installations where security is not a concern.
Comfort Installation Manual
36
TEL
IN
TEL
OUT
5
MJ1
MJ2
2
5
2
A = 5
B = 2
C = 3
ringer
BT Line IN
Master Socket
NT5
House Extensions 4 REN
recommended Maximum
by Telephone companies.
Secondary
Sockets
3
5
2
Master or secondary
socket. see below
3
5
2
3
5
2
make joint
Comfort CPU
3
With Ringer Module
Use a master socket on Tel Out if the ringer
module is used for doorbell and reminder
messages. The master socket creates a ring
connection (3) from the line (2,5).
Without Ringer Module
Use a secondary socket if ringer module is
not used and ensure that the ringer wire 3 is
carried through to all house phones.