Switching to VoIP

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

Index | 473

synchronous optical network (SONET), 66,

450

syslog keyword, Asterisk, 244

System command, Asterisk, 386, 409

T

T carrier, 451

T extension, Asterisk, 392

t extension, Asterisk, 392

T1 circuit, 66, 276, 450

bandwidth of, 110

channelized or split-use, 277

compared to VoIP, 119

connecting PBXs by, 292

wireless T1, 79

T1 interfaces, Asterisk and, 415

T100P interface card, 40

T.120 protocol, 136

T1/PRI trunks, 266, 269

T3 circuit, 66, 276

T.30 protocol, 332

T.37 protocol, 332, 338

T.38 protocol, 339

TAFM (The Asterisk Fax Manager), 375

talk extension, Asterisk, 392

TCP (Transmission Control Protocol), 18

TCP/IP, as transport for VoIP

trunks, 295–300

TCP/IP network, 14

reliability of, 8

VoIP requiring, 7

(see also IP network; VoIP network)

TDD MODE command, AGI, 441

TDM equipment vendors, 380–381

TDM phones, 307

TDM (time division multiplexing), 74–76,

451

TDM400P interface card, 39, 40

TE400 Series interface card, 40

Telecommunications Standardization Sector

(ITU-T), 60

Telecommunications Systems Inc., 351

Telecontrol Corp., 351

telephone services, list of, xv

TELEPHONECOMP variable, Asterisk, 387

telephones (see IP phones; SIP phones;

traditional phones)

telephony, 1, 94

telephony functions (see applications)

telephony hardware vendors, 380–381

telephony service provider (see TSP)

telephony software, 36, 370–374 ...