Specifications

158 Glossary Final
TCP
Transmission Control Protocol. This is a layer added onto the IP
protocol (shown as TCP/IP) to provide reliable communication.
telco
Telephone Company. This is a company that purchases the silhouette
solution and sells voice over IP telephone service to tenants
tenant
a customer of the service provider
tenant administrator
a user id that has the access rights required to perform administrative
functions for a given tenant.
TFTP
Trivial File Transfer Protocol. This is the protocol used by the silhouette
TFTP Server that sends the software load files to IP phones.
U
UBR
Unspecified Bit Rate. This is a characteristic of a PVC in an ATM
connection. In the silhouette system, it would be used for PC data
traffic.
UDP
User Datagram Protocol. This is a layer added onto the IP protocol
(shown as UDP/IP) to provide a simple way to deliver information.
URL
Universal Resource Locator This is typically a web page such as http://
www.broadviewnet.com
User
an individual with access to the web interface of the silhouette product.
A user has an associated user id and password/PIN number. From the
perspective of a tenant, a user also has an associated telephone
extension
V
VBR rt
Variable Bit Rate Real Time. This is a characteristic of a PVC in an ATM
connection. In the silhouette 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
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).
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.