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5
TT-1 Plus Installation and Operation Manual
INTRODUCTION
Introduction
Thank you for your purchase of the TT-1 Plus, Telephone Line Powered Auto-
Answer/Auto-Disconnect Hybrid/Coupler, which we will refer to throughout the
manual as the TT-1 Plus. We’re confident this product will give you many years of
dependable service. This manual is intended to give you all the information needed
to install and operate the product.
Inspection
Please examine your TT-1 Plus carefully for any damage that may have been sus-
tained during shipping. If any is noted, please notify the shipper immediately and
retain the packaging for inspection by the shipper. The package contains the TT-1
Plus and modular cable. Manuals may be downloaded from our web site.
Installation/Operation
RFI and surge suppression suggestions
CAUTION!
Installation of the TT-1 Plus in high RF environments should be per-
formed with care. It is recommended that all cables connected to the TT-1 Plus be
looped through ferrite cores to suppress RF. All shields should be tied to the “GND”
GrouND terminals. Surge protection with RF filtering is also suggested. For light-
ning protection devices, check out www.polyphaser.com and www.itwlinx.com.
Telco line jack (Line):
Connect your telephone line to this modular RJ-11 jack
labeled “LINE”. To have the TT-1 Plus automatically disconnect when a caller
hangs up, verify that the telephone company has enabled the “CPC” calling party
disconnect (wink) feature on the phone line.
TIP: If you have trouble seizing the telephone line, try reversing the tip and ring on
the line.
Loop-thru line jack (Loop):
Connect your telephone set or other telephone type
equipment to the jack labeled “LOOP”. When the bypass options dipswitch SW-4
is in the off position, the device connected to this jack will be disconnected when the
TT-1 Plus answers the line. The bypass feature is disabled by default (SW-4 On).
Send Input:
Low Z, transformer balanced input. Connect your (send to telephone
line) equipment’s output to the Snd+ and Snd - rear panel plug-in euroblock screw
terminals or the 3.5mm stereo jack labeled ”SEND”. The input level should be lim-
ited to –9dBu.
Caller Output:
Low Z, transformer balanced output. Connect your (caller audio
from telephone line) equipment’s input to the Call + and Call - plug-in euroblock
screw terminals or the 3.5mm stereo jack labeled “CALLER”. The caller audio
level may vary from –9dBu to –20dBu. Note: Additional external amplification
may be required
WEBSITE:
Visit our web site for
product updates and
additional information.
