T1X Transceiver (T1X-XCVR)
The non-line powering T1 Transceiver (T1X-XCVR) plug-in card provides an indoor ANSI/T1 DSX-1 level interface. It transmits and receives up to 24 DS0s of voice or data originating from either the channel units in the CBA subscriber slots, another T1 transceiver card, or a digital carrier line unit in a digital switch. It operates at the T1 rate of 1.544 Mbps. Use the T1X-XCVR card for applications requiring interface to multiplexers or other co-located equipment.

Features and Benefits

  • One T1 (1.544 Mbps) interface per card
  • SF and ESF framing formats
  • Provisionable line coding
  • Front panel jack access for testing and monitoring
  • Dual memory support for upgrades
  • Easy provisioning via CLI or EMS

Included Highlights

Cost Savings

The transciever can be provisioned as a cost-saving uplink to an ATM network

Faceplate LED Indicators

There are four LED indicators on the T1X-XCVR front panel. A Green ACTV LED indicates a datalink is present. The ACTV LED flashes 120 times per minute in self-test mode, and 60 times per minute in loopback mode. The red FAIL LED indicates a plug-in card failure. The red LOC LED indicates a problem with in coming data (LOF, LOS, high BER, timing slip, or loss of data link). The amber REM LED indicates that the far end is not receiving data. The card can be disabled using CLI commands, in which case the green ACTV LED will turn off (other LEDs may remain on). All LEDs off may indicate either AIS or that the card has been disabled via software. The transceiver features front panel jack access for testing and monitoring.

Alarms, Test and Stastics

The T1X-XCVR has selectable alarm thresholds, BER calculation, performance monitoring statistics, and alarm history.

Line Coding and Signaling

Line coding options are AMI or B8ZS. The T1X-XCVR card performs signaling conversion and datalink termination.

Easy Provisioning

The T1X-XCVR can be easily provisioned from CUI or Tellabs Panorama Element Management System (EMS)


  • Height: 5.125 inches (13.018 cm)
  • Width: 0.563 inch (1.429 cm)
  • Depth: 10.5 inches (26.67 cm)
  • Weight: 0.5 pound (0.23 kg)
  • One (1) T1 (1.544 Mbps) interface per card
  • Typical power consumption: 2.0 W
  • Operating temperature: -40 F / -40 C to +149 F / +65 C
  • Humidity (relative): 5 to 95% non-condensing
  • GR-1089-CORE
  • GR-499
  • Jitter: 138 UI per AT&T Pub./62411, ANSI T1E1 1.2/88
  • Cable interface: AT&T CB-119
  • Framing: SF and ESF
  • Line coding: AMI/ZCS or B8ZS
  • Loopback modes: Equipment and Facility
  • Channel sequence: D1D, D2, D3/D4
Faceplate LED Indicators
  • FAIL Red: Plug-in card failure, or card unable to communicate with the CPU
  • ACTV Green: Datalink is established with far end
  • ACTV Flashing Green: 60 flashes per minute: loopback in progress (card is receiving its own signal) 120 flashes per minute: diagnostics, self-testing, or provisioning in progress
  • LOC Red: Local data reception is unsatisfactory (LOF, LOS, high BER, timing slip, and so forth)
  • AIS Green or Blue: Remote (far end) data reception failure
  • Tellabs Panorama Element Management System (EMS)
  • Craft User Interface (CUI)
Software Support
  • Minimum base software FP16 and higher
  • Supported in Tellabs 1000 MSAP CBA1120 and CBA1048
Faceplate Jacks
  • E OUT Equipment Output: DS1 test access toward the internal cross-connect (backplane)
  • F OUT Facility Output: DS1 test access toward the facility (line)
  • E IN Equipment Input: DS1 monitoring access from the internal cross-connect (backplane)
  • F IN Facility Input: DS1 monitoring access from the facility (line)
Analog Parameters
  • Equalization Receive: 750 mV (10 dB attenuation)
  • Equalization Transmit: F4 step line build out 0 to 655 feet, 133 feet per step
  • Input impedance: 100 Ω, twisted pair
Product Specifications Sheet

T1X Transceiver (T1X-XCVR)
Product Specifications
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