U


unavailable seconds, 265

underlying carriers

handling toll-free calls from Canada, Alaska, and Hawaii, 254

international calls and, 231

unexpected electric activity, static and, 225

unsatisfactory business relationship (UBR), migrating request rejections and, 175

upgrading, from no phone system, 26

used systems, purchasing, 28




Telecom for Dummies
Telecom For Dummies
ISBN: 047177085X
EAN: 2147483647
Year: 2006
Pages: 184

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