41,381 telecom acronyms and abbreviations > page 3

4GL: fourth-generation programming language 
4NF: Fourth Normal Form 
4P: Four Pole 
4PDT: Four Pole, Double Throw 
4PDT: Four-Pole Double-Throw 
4PST: Four Pole, Single Throw 
4PST: Four-Pole Single-Throw 
4W: 4-Wire 
4W: Four-Wire 
4WL-WDM: Four-Wavelength Wavelength-Division Multiplexing 
4WTI: 4-Wire Trunk Interface 
4X: Quadruple Speed 
5!5: Five by Five 
5/e: Fifth Edition 
56K: 56 kbps 
5NF: Fifth Normal Form 
5RSM: 5ESS Remote Switching Module 
6/e: Sixth Edition 
64QAM: 64-state Quadrature Amplitude Modulation 
6DOF: Six Degrees Of Freedom 
73: Best Regards 
7D: Seven Digit number 
88: Love and Kisses 
8PSK: Octant Phase Shift Keying 
9: Nine 
9600: 9600 bps 
a: acceleration 
A: Accepted 
A: Access 
A: ACCUMULATOR 
A: Acknowledgement 
A: Activation 
A: Actual 
A: Adaptation 
A: Address 
A: Agent 
A: Aggregate 
A: Amper 
a: Ampere 
a: anode