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DATA SHEET
Tellabs® 1000 Multi-Service Access Series
LET Universal Voice Grade Plug-in Card (L-UVG)
Overview
Features
The Tellabs 1000 Multi-Service Access (MSA) Series Local
Exchange Terminal (LET) Universal Voice Grade (L-UVG) plug-in
card provides six individually provisionable circuits that support
ground start, loop start and reverse battery signaling for applications
such as PBX off-premises lines.
®
The L-UVG card is direct-mapped (non-concentrated) to a corresponding R-UVG card, installed in an Remote Subscriber Terminal
(RST) and provides six dedicated circuits of universal voice grade
services.
Each L-UVG circuit can be independently provisioned as a D4 FXO,
D4 DPT, GR-08 POTS or GR-08 DID circuit. The L-UVG card provides
ring cadence following including ring-ping. Three modes of on-hook
transmission are supported: between ring bursts, loop current feed
open interval, and provisionable full time forward disconnect is supported in POTS mode. The card also supports precision gain adjustment in 0.1dB steps over a 12.0 dB range. The L-UVG can be located
at the RST to support Direct Inward Dialing (DID) applications.
The L-UVG card also supports multiple loop testing systems
including Mechanized Loop Testing (MLT).
Six two-wire circuits per unit
n Software selectable transmit gain (0.1 dB steps)
n Ground start/loop start capability
n Reverse battery (quiet)
n Wide ring voltage/frequency detection window
n Software provisionable 600/900 Ohms impedance
n On-hook transmission
n Compatible with the following test systems:
MLT, Reltec, Teradyne 4TEL
n Support for CMWI (Call Message Waiting Indicator)
n
LED Indicators
LEDs on the L-UVG faceplate
indicate the following:
Green BUSY — one or more
L-UVG circuits are busy or are
being tested and must not be
removed from service
nRed FAIL — plug-in card failure
nBlinking red FAIL — illegal
signaling
n
See tellabs.com for more information about Tellabs Solutions
2 TELLABS 1000 MULTI-SERVICE ACCESS SERIES LET UNIVERSAL VOICE GRADE PLUG-IN CARD (L-UVG)
Specifications
MLT/Teradyne DC Signatures
Signaling
End-to-end signaling delay (normal and
reverse battery): < 50 msec
n
On-hook:
n
–
Pulse distortion (normal, reverse,
pw > 50 msec): < 15 msec
–
Ring detection: < 100 msec
n
AC ringing load (20 Hz): 4 kOhms ± 10 %
–
Ring detector sensitivity:
40 Vrms 17 to 55 Hz
–
Nominal DC input resistance: 800 Ohms
n
n
n
n
Tip to ring: 50 kOhms
Environmental Operating Temperature
n -40° F to +149° F (-40° C to +65° C)
Tip to ground, ring to ground:
430 kOhms
n
n
Nominal DC input resistance in DID mode:
250 Ohms
n
Ring ground resistance: 600 Ohms
n
Tip to ring: 43 kOhms
Tip to ground, ring to ground:
430 kOhms
Off-hook:
n
DLC Test Resources in Use Signatures
n Tip to ground, ring to ground: 167 kOhms
Humidity: 5–95% non-condensing
n
Average power consumption: 1.0 W
n
Tip to ring: 900 Ohms
Off-hook, ring grounded:
Tip to ground, ring to ground:
430 kOhms
–
Width: 0.563 in (1.429 cm)
n
Depth: 10.5 in (26.67 cm)
Tip to ring: 900 kOhms
–
Dimensions
n Height: 5.125 in (13.018 cm)
n
Maximum CO wiring resistance: 200 Ohms
n
Weight
n 0.5 lbs (0.23 kg)
Reltec DC Signatures
Audio
On-hook:
n
Companding: μ-Law
–
VF input impedance (provisionable):
600/900 Ohms
–
n
Tip to ground, ring to ground:
430 kOhms
n
Nominal net loss (referenced 2-wire
600 Ohms): 0 ± 0.4dB
n
Tip to ring: 50 kOhms
GR-1089-CORE
n
Off-hook:
n
Maximum VF overload level: + 5.0 dBm
Tip to ground, ring to ground:
430 kOhms
–
n
Longitudinal balance:
> 58 dB (400 Hz to 3.4 kHz)
–
Two-wire return loss:
ERL > 18 dB, SRL > 10 dB
–
n
Tip to ring: 835 Ohms
Off-hook, ring grounded:
n
n
Transmit gain adjustment: 3 dB to + 9dB
n
Receive gain adjustment: 9 dB to + 3dB
–
Tip to ground, ring to ground:
430 kOhms
Tip to ring: 835 kOhms
n
Compliance
nR-TSY-000057
TR-TSY 000303
n
Next Step:
Visit www.tellabs.com to
learn more about how Tellabs
makes it easy for carriers to
offer new higher-speed services. If you have a question,
please email [email protected].
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