Specifications

Glossary
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V
VBR rt Variable Bit Rate Real Time. This is a characteristic of a PVC in an ATM
connection. In the 3600 HKS system, it would be used for telephony traffic
VCI Virtual Circuit Identifier. This is part of the definition of a PVC in an ATM
connection. A PVC is uniquely identified by its VCI and VPI (usually written
in the form ccc.ppp where ccc is the VCI and ppp is the VPI).
VPI Virtual Path Identifier. This is part of the definition of a PVC in an ATM con-
nection. A PVC is uniquely identified by its VCI and VPI (usually written in
the form ccc.ppp where ccc is the VCI and ppp is the VPI).
Voice Mail system a device used for storage and retrieval of subscriber's voice mail.
W
WAN Wide Area Network. This refers to the part of the network that connects the
service provider to its tenants
Z
Zone A logical entity that associates sites with dial plans and CallP servers.
Zones contain route entries that determine the physical routing of outgoing
calls from the system.