12. SB-3614(V)/TT and SB-3614A(V)/TT telephone switchboards.
Status STD-A; NSN: 5805-01-032-1694 (SB-3614(V)/TT)
STD-A; NSN: 5805-01-216-0887 (SB-3614A(V)/TT)
General Information
The SB-3614 is a tactical, ruggedized, 30-terminal automatic switchboard. It provides rapid, cordless
service to various interfaces. It may operate as a 30-terminal, single-switching facility or may be
connected with additional switchboards to form a 60 or 90-line system. The switchboard operator can
monitor, answer, initiate, extend, preempt, and release calls using the four-by-four keysender and other
functional pushbuttons. Any connection can be broken down manually, through operator intervention
and action, or automatically, through a subscriber going to an on-hook condition. Up to 18 terminals
may be connected as either 4-wire DTMF signaling trunks, or DC closure dial pulse or DTMF trunks,
E&M dial pulse or DTMF lines or trunks. The switchboards provide fully automatic operation with
touch tone subsets and 2- and 4-wire trunks and limited service with rotary dial pulse subsets. The SB-
3614(V)/TT requires manual tandem dialing when dialing outside of your local switchboard. The SB-
3614A(V)TT automatically routes the call through the network using primary or alternate routes. For
common-battery signaling or ringdown lines and trunks without DTMF capability, the switchboard
provides call extension service. DTMF subscribers have direct distant dialing (7-, 10-, and 13-digit) and
DSN, DCO, and commercial access capabilities. Other features of the SB-3614A(V)/TT include
facsimile service, call forwarding, preemption by precedence, conference calling, and subscriber (loop)
hunting.
Technical Characteristics
Type of Operation ................................................................. Manual or automatic
Power Requirement ...............................................................24 V DC, 5 amp (max)
Terminals .............................................................................. 30 in each switchboard; 60 or 90
in expanded mode
Simultaneous Conversations .................................................15 for one switchboard; 30 for
expanded operation
Precedence Levels .................................................................SB-3614(V)/TT: ROUTINE and
PRIORITY
SB-3614ACV) /7T: ROUTINE,
PRIORITY, IMMEDIATE,
FLASH, and FLASH OVERRIDE
1-17
SS 0029
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