© 2004 SAGE INSTRUMENTS
9100-0925-01 V1.2
4
Overview
The Sage 925VST
The Sage 925VST is the field component of the Sage
V
oice over Packet
T
est System
(VTS). The 925VST initiates VoP service qualification and maintenance tests from a
customer premise or any 2-wire or 4-wire access point to a Sage responder that is typically
located in the central office. The Sage responder performs the cooperative farend
responder test functions and sends the measurement data back to the 925VST for review,
processing (pass/fail), and storage. The 925VST is designed to be portable and durable
and can function just like a telephone handset.
The 925VST initiates tests and displays results immediately upon completion. Once a test
is selected on the 925VST, it runs automatically. Test criteria templates installed on the
925VST determine whether a test passes or fails.
The 925VST comes equipped with the Sage Next Generation VoP Test suite. Including
SMOS, Packet Voice Impairment Test (PVIT), Echo Sounder, DVM, DTMF, and
Callback tests. In addition, the 925VST supports legacy 100 and 102 test line
measurements. Additional options include
•
2-wire analog interface
•
4-wire analog interface
•
responder mode
•
fax text
VoP Test System (VTS)
The 925VST and farend responder are designed to qualify VoP service installations and
support on-site field maintenance. Tests are useful to confirm proper lAD (Integrated
Access Device) installation, softswitch DN translation, end-to-end voice quality, and
detect and isolate echo, packet impairments, and poor network performance.
VoP Test System has two components:
•
The Sage 925VST hand-held unit used in the field
•
A Sage farend responder that can be located at any telephony 2-wire, 4-wire, or T1/E1
termination point.