15. AN/TTC-39A(V) 4 and AN/TTC-39D 712-line, and AN/TTC-39A(V) 3 300-line automatic
telephone central office.
Status: STD-B; NSN: 5805-01-122-3414 (AN/TTC-39D)
STD-B; NSN: 5805-01-121-4395 (AN/TTC-39A(V)3)
STD-B; NSN: 5805-01-121-9560 (AN/TTC-39A(V)4)
General Information
The AN/TTC-39D and AN/TTC-39A(V)4 service up to 672 analog and digital loops/trunks at EAC.
The AN/TTC-39 permits factory or depot level reconfiguration into a family of circuit switches
containing various quantities, types, and mixes of analog and digital switching terminations. The
AN/TTC-39A(V)3 performs like functions, but at a 600-line capacity. The AN/TTC-39 interfaces with
DSN, automatic secure voice communications (AUTOSEVOCOM), existing tactical switches (manual
and automatic), and commercial central offices. The AN/TTC-39 interfaces with NATO telephone
systems using CV-3478. Up to three remote control call service positions supplement the call service
function in the AN/TTC-39. It uses analog in-band, out-of-band digital (common channel), and dibits.
It signals and supervises trunks and lines, including ringdown, DC closure, dial pulse, tone, or digital
and provides a compatible connector between subscribers.
Major Components
712 Line
600 Line
1 switching module assembly
1 switching plus control
1 storage shelter S-640
module assembly (combined)
1 maintenance shelter S-639
S-250B/G (modified)
1 master power distribution
1 maintenance shelter S-250
unit ON-224/T
1 storage shelter S-250
2 electric power plants
1 master power
AN/MJQ-12 (60 kW)
distribution unit ON-224/T
1 intershelter cable reel
trailer V-528/T
Technical Characteristics
Vehicular Requirements:
39D, 39A(V) 4 ...................................................................... One 5-ton truck, two 2 1/2-ton
trucks
A(V)3 .................................................................................... One or two CUCV or HUMMV
trucks
Power Requirement ...............................................................115/208 V AC, 3-phase 50/60 Hz
((V) 4 at 400 Hz)
1-21
SS 0029
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