 45/16-17 PRM (Protocol Reference Model) 41/8, 41/10, 41/18-19 Euromessage, 45/15 B-ISDN, 41/14 QPRS (Quadrature Partial Response formats, 45/9-10 Probability, 1/6-9 System), 19/11 frequency allocations, conditional, 4/5 QPSK (Quadrature Phase Shift Keying), Europe, 45/3-4 distribution, 4/6-7 19/9, 19/11 USA and Canada, 45/4 integral, 19/5 Quadrature FM demodulator, 18/8 large site systems, 45/6-8 theory in information, 4/3, 4/4 Quantisation, 4/12 MBS (Swedish Mobilsoekring System), Probing technique, polling, 13/17 Quantisation distortion, PCM, 19/15-16, 45/11 Problem oriented languages, 25/12 30/5, 30/9 overlay, 45/15 Processes, Markov, 3/5-8 Quantisation noise, PCM, 19/15, 57/12 performance measurements, 45/13-14 Product modulator, 18/5 Quantum efficiency, photodetection, 53/14 POCSAG, 45/9-10 Programming see Software Quartile deviations, 1/4 POSP system, Germany, 45/15 Propagation see Electromagnetic Quasi-synchronous operation, PMR, power for, 45/14 waves; free space propagation; 46/4-5 receivers, 45/4, 45/11-13, 45/14 radiowave propagation Queuing, 3/1-18, 13/3-4 regulating authority requirements, 45/6 Propagation delay, ALOHA usage, 3/3, 3/16 secondry calling, 45/15 digital retransmission problems, 13/7 arrival/departure distributions, 3/8-9 on site paging, 45/4-5 telephone subjective effects, 30/5 birth/death models, 3/7-8 SkyTel, 45/17-18 Protective conductors, safety, 23/7 CSMA mobiles, 3/16-17 talk back paging, 45/6 PROTEL (PRocedure Oriented Type G/M/m in equilibrium, 3/10-11 telephone coupling, 45/5-6 Enforcing Language), DMS, 32/23 Kendall notation, 3/4-5 transmitters, 45/8-9 Protocol analyser, 61/12-15 Little's law, 3/4 wide area paging, 45/9-11 Protocol testing, 61/20-1 M/G/1 in equilibrium, 3/9-10 Radiowave propagation, PS (Program Store), APZ Markov process and chains, 3/6-10 effects of atmosphere, 27/4-5 subsystem, 32/16-17 multi-access channel models, 3/15 free space, 27/4 PSE (Packet Switching Exchange), 54/6 networks, 3/12-15 frequency spectrum, 27/3 Pseudoternary coding, TDM, 21/12-13 Poiss