Atec JDSU-FST-2310 - Manual (Page 6)

DS1/DS3 Jitter analysis
Verify possible timing problems encountered during installation, maintenance and
troubleshooting of SONET networks by jitter testing at DS1 or DS3 tributary interfaces.
Clock differences between two networks are compensated by pointer movements.
Timing problems cause excessive pointer movements at SONET interfaces. However,
lack of access at the high-speed SONET interfaces make it often impossible to verify
timing problems at synchronous levels. Pointer movements cause jitter at
plesiochronous tributary levels. The FST-2310 tests high-band and wide-band jitter at
DS1 and DS3 interface. In addition, the jitter results are simultaneously available with
DS1/3 bit-error-rate testing, eliminating the need for specialized test configurations
and without increasing test time.
ATM analysis
Analyze ATM circuits at OC-12c, OC-3c, DS3, and DS1 rates. Generate multiple cell
streams to perform key quality of service measurements (cell delay variation, cell error
ratio, cell loss ratio, round-trip delay), cell statistics and bandwidth utilization. The
FST-2310 supports OAM alarm (VP/VC AIS/RDI) and loopback cells as well as
modification of the VPI/VCI, PTI, CLP, and GFC fields of the cell header. Also
supported are the 0.191 ITU standard test cell and the ability to save up to four transmit
profiles (figure 6).
GR-303 protocol link analysis
Perform basic GR-303 protocol link analysis in Monitor/Through mode at the 64-K
data rate on a call processing (TMC/CSC) or operations channel (EOC).
Analysis is conducted unobtrusively to decode messages on the system’s protocol links.
Technicians can monitor call statistics, filter call control messages based on cause code,
or monitor layer-2 packet statistics to qualify proper functioning of the GR-303
interface. The GR-303 option also provides support for tracing calls based on filter
criteria (for example call reference value – CRV) established through the test setup.
Once the call is traced, clicking on the appropriate call provides decodes of the protocol
message that were exchanged to establish the call.
ISDN PRI testing
Emulate an ISDN TE device, such as a PBX, to place and receive voice and data
calls on an ISDN PRI circuit. The FST-2310 TestPad enables users to monitor and
capture signaling messages exchanged on the D-channel. Caller ID/Caller ID
blocking, 21-digit dialing and DTMF digits are all supported. Call status results
and progress reports provide an additional level of detail to ensure calls are
successfully established (figure 7).
The FST-2310’s ISDN functionality supports AT&T specific call control (5ESS, DMS-
100, National ISDN-II). The FST-2310 can be used for backup D-channel testing to
switch between standby and in-service D-channels, bidirectional monitoring with full
text decodes for protocol messages exchanged on the D-channel, as well as testing of
multiple DS1 lines with NFAS testing.
6
FST-2310 TESTPAD
figure 6 Search for ATM traffic on DS1, DS3, OC-3, or
OC-12 circuits