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] Layer 2 overhead requirements LDCELP (Low-Delay CELP) link efficiency mechanisms listener echo LLQ (low latency queuing) local calls local loop local loops local-loop signaling address signaling information signaling supervisory signaling location server (SIP) locations CAC long-distance calling, toll bypass long-distance toll bypass loop start loop-start signaling low-speed interfaces |