four line phone

four line phone, Total:14 items.

The international standard classification for "four line phone" includes: .

The Chinese standard classification for "four line phone" includes: Technical management .

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General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

• GB/T 7624-1987 2400 bits per second modem standardized for use on 4 wire leased telephone - Type circuits

Professional Standard - Electron

• SJ 3208-1989 Technical requirements for telephone system in carrier communication using coaxial cables
• SJ/T 10232-1991 Technical requirement of wire voice - Band modulation/demodulator for Type 2400bit/s
• SJ/Z 9096.4-1987 Methods of measurement for radio transmitters-Part 4: Amplitude/frequency characteristics and non-linearity distortion for radiotelephony and sound broadcasting transmitter

International Telecommunication Union (ITU)

• ITU-T V.29-1988 9600 BITS PER SECOND MODEM STANDARDIZED FOR USE ON POINT-TO-POINT 4-WIRE LEASED TELEPHONE-TYPE CIRCUITS
• ITU-T V.26-1988 2400 BITS PER SECOND MODEM STANDARDIZED FOR USE ON 4-WIRE LEASED TELEPHONE-TYPE CIRCUITS
• ITU-T V.33-1988 14 400 BITS PER SECOND MODEM STANDARDIZED FOR USE ON POINT-TO-POINT 4-WIRE LEASED TELEPHONE-TYPE CIRCUITS

Insulated Cable Engineers Association （ICEA)

• ICEA S-88-626-1993 Telephone Cordage and Cord Sets

RO-ASRO

• STAS 3627/1-1985 Cords for teiecom munications TINSEL CORDS

SCC

• MIL MIL-T-24649/14-1994 TELEPHONE, HARDWARE, SOUND POWERED TELEPHONE/DISTANCE LINE
• CEI 46-14:1997 Cordoni telefonici

DE-VDA

• VDA GSM-1997 GSM - Radiotelephones, radiotelephone components and their antennas

United States Navy

• NAVY MIL-T-24649/14-1994 TELEPHONE, HARDWARE, SOUND POWERED TELEPHONE/DISTANCE LINE

ITU-R - International Telecommunication Union/ITU Radiocommunication Sector

• ITU-R F.335-2 SPANISH-1970 USE OF RADIO LINKS IN INTERNATIONAL TELEPHONE CIRCUITS

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