PartsTable
Technical Data Sheet
218-1055-020 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CONVERTER,TELEGRAPH-TELEPHONE SI. Key specifications include signal_type: RING DOWN, overall_depth: 7.000 INCHES NOMINAL IN, overall_width: 19.000 INCHES NOMINAL IN, overall_height: 1.750 INCHES NOMINAL IN, end_item_identification: MILSTAR TERMINAL REMOTE, switchboard_side_current_type: DC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5805-01-418-1625, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO MRO_GENERAL 218-1055-020
NSN: 5805-01-418-1625
FSC: 5805
CAGE: 95105 — ROCKWELL COLLINS, INC. DIV COLLINS AEROSPACE - MISSION SYSTEMS (USA)
SPECIFICATIONS
signal_typeRING DOWN
overall_depth7.000 INCHES NOMINAL IN
overall_width19.000 INCHES NOMINAL IN
overall_height1.750 INCHES NOMINAL IN
end_item_identificationMILSTAR TERMINAL REMOTE
switchboard_side_current_typeDC
communication_circuit_quantity4
received_line_signal_frequency_rating2500.00 HERTZ MINIMUM AND 2700.0 HERTZ MAXIMUM
transmitted_line_signal_frequency_rating2590.0 HERTZ MINIMUM AND 2610.0 HERTZ MAXIMUM
NSN5805-01-418-1625
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONVERTER,TELEGRAPH-TELEPHONE SI TITLE COMPONENT PN 218-1055-020 MFR CONVERTER,TELEGRAPH-TE
KEY FEATURES
SIGNAL TYPE: RING DOWN
TRANSMITTED LINE SIGNAL FREQUENCY RATING: 2590.0 HERTZ MINIMUM AND 2610.0 HERTZ MAXIMUM
COMMUNICATION CIRCUIT QUANTITY: 4
RECEIVED LINE SIGNAL FREQUENCY RATING: 2500.00 HERTZ MINIMUM AND 2700.0 HERTZ MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH19.000 INCHES NOMINAL IN
SIGNAL TYPERING DOWN
END ITEM IDENTIFICATIONMILSTAR TERMINAL REMOTE
OVERALL DEPTH7.000 INCHES NOMINAL IN
SPECIAL FEATURESTELEPHONE LINE CONVERTER MODULE PROVIDES THE TALK BATTERY,RING GENERATION AND OFF HOOK DETECTION NECESSARY TO OPERATE A STANDARD TELEPHONE;IT ALSO PROVIDES THE RING DETECTION AND LINE SEIZURE NEEDED WHEN CONNECTING TO A PBXSTATION OR CO TRUNK;ON BOARD IS A 2-WIRE TO 4-WIRE HYBRID THAT SEPARATES THE TRANSMIT AND RECEIVE AUDIO PATHS;THE BOARD ALSO CONTAINS A PULSE CODE MODULATOR AND DEMODULATOR WHICH CONVERTS THE AUDIO SIGNALS INTO A SERIAL BIT STREAM;THE USE OF COMPANDORS FURTHER REFINE THE QUALITY OF THE AUDIO;THE OUTPUT IS 4-WIRE 600 OHM AUDIO OR SYNCHRONOUS SERIAL DATA VIA A RS-422 INTERFACE;AN ON BOARD CLOCK GENERATOR IS PROVIDED (SELECTABLE DATA RATE FROM 28KBPS TO 256KBPS) OR THE SYSTEM WILL ACCEPT AN EXTERNAL CLOCK SIGNAL
TRANSMITTED LINE SIGNAL FREQUENCY RATING2590.0 HERTZ MINIMUM AND 2610.0 HERTZ MAXIMUM
COMMUNICATION CIRCUIT QUANTITY4
RECEIVED LINE SIGNAL FREQUENCY RATING2500.00 HERTZ MINIMUM AND 2700.0 HERTZ MAXIMUM
SWITCHBOARD SIDE CURRENT TYPEDC
OVERALL HEIGHT1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
4005-0002Interchangeable
interchangeable cross-reference
interchangeable
3000-6606Interchangeable
interchangeable cross-reference
interchangeable
SP15-2Interchangeable
interchangeable cross-reference
interchangeable
426210Interchangeable
interchangeable cross-reference
interchangeable
195581Interchangeable
interchangeable cross-reference
interchangeable
22FT1032Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 218-1055-020?
218-1055-020 is a CONVERTER,TELEGRAPH-TELEPHONE SI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 218-1055-020?
There are 17 known substitutes for 218-1055-020: 4005-0002, 3000-6606, SP15-2 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218-1055-020?
218-1055-020 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5805-01-418-1625. This indicates validated use in U.S. government and defense supply chains.
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