Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
T
Trunk
Service that provides quasi-transparent connections between two PBXs, a PBX and a local
extension, or some other combination of telephony interfaces to be permanently conferenced
together by the session application and signaling passed transparently through the IP network.
U
UDP
User Datagram Protocol. UDP is a simple protocol that exchanges datagrams without
acknowledgments or guaranteed delivery, requiring that error processing and retransmission be
handled by other protocols.
V
VIC
Voice interface card. VICs install in a slot in the router, and provide the connection to the telephone
equipment or network.
VoIP
Voice-over-IP, a feature that carries voice traffic, such as telephone calls and faxes, over an IP
network, simultaneously with data traffic.
VoIP dial peer
Software object that ties together an IP address and a telephone number at a remote site reached
over the IP network (also called remote dial peer).
VPM
Virtual voice-port module.
VTSP
Voice telephony service provider.