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] [X] [Y] [Z] T carrier t extension, Asterisk T extension, Asterisk T.120 protocol T.30 protocol T.37 protocol 2nd T.38 protocol T1 circuit 2nd 3rd bandwidth of channelized or split-use compared to VoIP connecting PBXs by wireless T1 T1 interfaces, Asterisk and T1/PRI trunks 2nd T100P interface card T3 circuit 2nd TAFM (The Asterisk Fax Manager) talk extension, Asterisk TCP (Transmission Control Protocol) TCP/IP network reliability of VoIP requiring TCP/IP, as transport for VoIP trunks TDD MODE command, AGI TDM (time division multiplexing) 2nd TDM equipment vendors TDM phones TDM400P interface card 2nd TE400 Series interface card Telecommunications Standardization Sector (ITU-T) Telecommunications Systems Inc. Telecontrol Corp. telephone services, list of TELEPHONECOMP variable, Asterisk telephony 2nd telephony hardware vendors telephony software 2nd television cable trunks Telos ISDN H.323 Gateway terminals endpoints as H.323 protocol terms used in this book text-to-speech TFTP (Trivial File Transfer Protocol) 2nd 3rd TFTP server 2nd The Asterisk Fax Manager (TAFM) three-way calling Tiff2PS utility time division multiplexing (TDM) 2nd time required to implement VoIP time-based context includes timing of VoIP rollout TiVo Series 2 devices tones DTMF tones standard tones topology ToS (Type of Service) TOSC Call Soft Pro traceroute, auditing performance with traditional phones, integrating into VoIP network traffic class expediting traffic diversion training required for VoIP implementation transcoding 2nd Transfer command, Asterisk Transmission Control Protocol (TCP) transport transport layer, OSI model Trivial File Transfer Protocol (TFTP) 2nd Trojan horses troubleshooting ATA ports connected incorrectly audio dropouts across wide area call path budget too small callers can't hear you capabilities negotiation Cisco IP phones not accepting 802.3af inline power dialed digits not working with IVR prompts echo first part of sentences cut off inability to receive calls from PSTN interoperability problems 2nd interrupting between callers IP phone unable to make calls jitter latency loss of dial-tone periodically media loads, simulating packet inspection for PBX to IAXTel sound quality is poor performance loss with high call utilization power loss causing loss of phone use QoS issues robotic sound quality signaling problems SIP registrations not working through firewall softPBX going down software bugs , status and reporting switchover date missed by phone company tools for 2nd user complaints trunk channel, creating with POTS line trunk groups 2nd trunk ports trunks 2nd 3rd 4th 5th ATM trunks bulk trunk providers Centrex trunks dial-tone trunks 2nd 3rd 4th fiber trunks hunt groups of ISDN BRI trunks legacy trunks POTS trunks private trunks 2nd switch-to-switch trunk television cable trunks VLAN trunks TSP (telephony service provider) 2nd 3rd dial prefixes for calling between emergency dispatch service requirements QoS for regulation of VPN not used by txfax command, SpanDSP typographical conventions used in this book |