Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] packet drops packet size, effect on bandwidth 2nd packet telephony networks analog interfaces benefits of best-effort traffic call control centralized components of distributed campus LAN environment components of digital interfaces BRI E1 T1 enterprise networks 2nd IP phones real-time traffic service provider networks packet voice gateways PBX-to-PBX calls PBXs (private branch exchanges) switches PCM (pulse code modulation) 2nd peak usage times, identifying PESQ (Perceptual Evaluation of Speech Quality) PLAR (private line automatic ringdown) calls connections, configuring on voice ports PLAR-OPX connections, configuring on voice ports postdial delay POTS (plain old telephone service) dial peers configuring hunt groups, configuring 2nd inbound, matching process outbound, matching process practice scenarios bandwidth, calculating network architectures Span Engineering dial plan worksheet Span Engineering numbering plans Span Engineering voice bandwidth requirements Span Engineering VoIP network security components preference command prefix command prepaid calling cards private numbering plans private trunk lines propagation proxy servers H.323 SIP PSQM (Perceptual Speech Quality Management) PSTN Fallback, configuring Public International Telecommunications Numbering Plans (E.164) public/internal numbering plan integration pulse dialing |