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LINECARDTM ADVANCED TEST SOFTWARE LE79112SLAT
PRODUCT PREVIEW
Le79112SLAT Advanced Test Code Load
Control/Coordination of line testing
• Integrated testing capabilities
– Aids development testing
– Two channels at a time for voltage or resistance tests
– One channel can be for 15-kHz noise tests
Loadable vectors for transmission algorithm verification
– Aids development testing
GR-909 equivalent equipment self-test
• DC voltage test — Tests whether or not the user can drive DC
voltage on the line
• Echo return loss (Trans-hybrid return loss) — Tests the audio path
and the balance network operation
• Ring-trip — Tests whether or not the equipment can detect ring
trip
• Hook detection test — Tests whether or not the equipment can
detect an off-hook
• SLAC device loopback — Tests audio path from the VCP to the
CODEC
• T/R loopback — Tests audio path out to T/R
• Idle channel noise — Measures the C-msg equipment and loop
noise
GR-909 equivalent outward loop testing
• AC hazardous potential — Checks for high levels of potential on T-G,
R-G
• DC hazardous potential — Checks for high levels of potential on
T-G, R-G
• AC foreign voltage (EMF) — Hazardous potential check with Pass/
Fail limits
• DC foreign voltage (EMF) — Hazardous potential check with
different limits
• Resistive fault test — Checks for resistive faults
• Receiver off-hook — Determines if the subscriber's receiver is offhook
• Ringers test — Determines/checks for conventional or electronic
ringers
GR-844 equivalent loop testing
• Hazardous potential, AC foreign voltages — Measures voltage on
the subscriber’s line
• Hazardous potential, DC foreign voltages — Measures voltage on
the subscriber’s line
• Differential AC foreign voltage — Measures differential voltage on
the subscriber’s line
• Receiver off-hook test — Determines if the subscriber's receiver is
off-hook
• Three-element resistance measurement — Used to identify the
presence of resistive faults
• Three-element capacitance measurement — Used to identify the
cable and load capacitance
• Line noise measurements, active and passive with filters Measures
equipment and subscriber line noise
• Distance to open — Measured using the capacitance test
GR-844 equivalent equipment testing
• Outward draw and break dial tone — Determines if the subscriber
can receive and disconnect dial tone
• Inward draw and break dial tone — Verifies dial tone from an
adjacent line
GR-844 equivalent Craftsman assisted testing
• Resistance test (three-element resistance measurement) —
Measures the loop or ground resistance of the subscriber's line
• Dial pulse with measurement — Determines the condition of the
subscriber's rotary dial
• DTMF with measurement — Determines the condition of the
subscribers DTMF generation
• Single, dual or quad tone output — Applies a single tone or
multiple tones to the line
• Register recall with measurement — Measures the duration of a
hook flash
LE79112SLAT LINECARDTM ADVANCED TEST SOFTWARE
Programmable on/off for each fault type
Automatic switch to “Active” (Talk) on ring-trip/off-hook
Major Call Control Features
32-Channel Call Control
• Minimizes the delay for ring-trip; no host interaction needed
• Control/Coordination of Call Processing
• CID high level interface
• Control for Metering
Automatic Ringing and Metering Cadencing
Smooth polarity reversal control
Checksum over Program Code space while in-service
DTMF Detection
• Up to 16 lines simultaneously
• Q.24 compliant
Testing Features
Pulse Dial Timing with Decode
• 32 simultaneous channels
• Adjustable timing parameters for Make, Break, Flash, and
Disconnect
Zero-Cross Detection for ringing on/off control
Optional make-before-break, or break-before-make (with
LCAS)
Adjustable delays for internal ringing
AC and DC fault detection with automatic disconnect of
the line
Slow ramp from Disconnect to Standby
• Programmable ramp time (0-4000ms)
Read loop conditions while in service
• Line Current (Metallic and Longitudinal)
• Sensed Voltage
• Current battery supply voltages
Howler Tone generation
Minor Call Control Features
Loadable Image
• Field firmware updates (compressed image support)
The task of performing line testing is shared between the host
controller and the VCP. The Zarlink VoicePath™ API-II software
contains a series of functions that pass their input arguments to
the VCP and trigger the execution of a VCP routine. The software
package also includes a test library that uses the basic VoicePath
API-II testing functions to implement a series of high-level tests.
The following testing functions are supported by the API-II:
Open DC and AC voltage measurements
Differential AC voltage measurement
AC and DC resistance measurement
Three-Element resistance measurement
DC and AC current measurements
Keypad Test (to support DTMF and Pulse Dial
Measurements)
Active & Passive noise measurement with various filter
options
Single, dual, quad tone output (for line testing)
Draw and Break dial tone
Hybrid loss measurement
REN measurement (capacitive load REN measurement)
The VCP Package
Supported Line Circuit Configurations
Host Code
Document and source code for
high-level algorithms.
Host Algorithms
API-II Software
Host Controller
Application Programming
Interface (API) that presents
a unified programming
interface to all of Zarlink’s Voice
Termination Devices (VTD).
VP API-II
QISLAC
Le79232 SLIC
Le79252 SLIC
EMR*/LCAS
790 Series
Internal Ringing
790 Series
External Ringing
* Optional
VCP Firmware
Control aggregation, DTMF
Detection, Line Testing,
Pulse dial timing, Zero cross
detection, CID.
QISLAC
HBI
Voice Control Processor
VoiceportTM
2-CH ABS
880 Series
Line Configuration
MPI
Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries is believed to be reliable.
The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice.
ZARLINK, ZL, and the Zarlink logo are trademarks of Zarlink Semiconductor Inc.
© 2010, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number 10ZS211
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