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E&M Special Services (E&M) Plug-in Card
The Tellabs 1000 MSAP E-lead and M-lead signaling (E&M) plug-in card is a special services channel unit. The E&M card supports one subscriber line circuit for E&M types I, II, III, IV and V and two subscriber line circuits configured for operation in E&M types I or V. The special services plug-in card also supports DX signaling (switched or fixed bias) and can provide subscriber line circuits for Tandem modes I and II (switch and station side) and Pulse Link Repeater (PLR) types I and II.

Features and Benefits

  • End-to-end compatibility with existing cards in the field
  • Two circuits per card, each able to support different provisioning
  • Software-provisionable E&M and PLR modes (2-wire or 4-wire)
  • Provides one or two E&M circuits per card, depending on modes: E&M Type I, II, III, IV, V and PLR I and II
  • Software-provisionable Tandem and DX modes (4-wire only)
  • Provisionable transmit and receive gain
  • Provisionable bias (switched or fixed — DX mode only)
  • Post-equalization
  • 600 ohms and 1200 ohms fixed impedances
  • Normal and reverse DX signaling

Included Highlights

Software provisionable

Software provisionable E&M and PLR modes (2-wire or 4-wire) and software provisionable Tandem and DX modes (4-wire only). Provisionable transmit and receive gain and provisionable bias (switched or fixed — DX mode only).

Many uses

This special services card has expanded functionality with additional support for equalization and signaling, and is fully GR-57 compatible. The primary application for the E&M card is interoffice trunking from a PBX to a switch.

Flexible

The E&M plug-in card can provide either 2- or 4-wire service. It can only provide 4-wire service when provisioned in the Tandem or DX modes. The E&M plug-in card has a fixed impedance of 600 ohms. Voice frequency gain is provisionable in 0.1 dB increments.

Specifications

Physical
  • Weight: 0.5 lb (0.23 kg)
  • Depth: 10.5 in (26.67 cm)
  • Width: 0.563 in (1.429 cm)
  • Height: 5.125 in (13.018 cm)
Interfaces
  • Two circuits per card
Power Consumption
  • Maximum power consumption: 8.8 W
  • Average power consumption: 3.0 W
Signaling
  • Maximum loop length (DX mode): 3030 ohms (including 1430 ohms for DX unit)
  • Maximum loop length (E&M, PLR, Tandem modes):300 ohms
  • On-hook interval distortion for intervals > 50 ms ±25 ms
  • Wink distortion for any off wink > 50 ms ±15 ms
  • Signaling delay: 50 ms maximum
  • Signaling Types: n E&M Types I, II, III, IV and V - Tandem Modes I and II, Station side - Tandem Modes I and II, Switch side - PLR Types I and II - DX (fixed or switched bias)
  • DX bridge circuit balancing: Fixed value of 1210 ohms for far-end DX bridge, plus 1120 Ohms adjustable in 16 steps for cable resistance
  • Pulse distortion: <3% at 12 pps (46%–70% break)
Audio
  • Supported cable facilities: Nonloaded cable 19, 22, 24 and 26 gauges are supported up to 18,000-ft, including bridge taps. Maximum bridge tap length is limited to 6000 ft. All combinations are allowed. All loops longer than 18,000 ft must use H-88 loading - Loaded cable Only H-88 loading is supported. 19, 22, 24 and 26 gauges are supported, including any gauge combinations.
  • Supported cable configurations: 2-wire and 4-wire Terminal interface, Up to 3000 feet of intraoffice cable, but ≤1.5 dB 1 kHz loss - 4-wire Cable interface, Maximum cable length is limited to 10 dB 1 kHz loss or 1600 ohms DC cable resistance
  • Idle channel noise < 20 dBrnC
  • Longitudinal balance 4-wire DX mode: 200 Hz to 2 kHz, > 58 dB, 3 kHz, > 53 dB
  • Return loss (600 ohms + 2.16 uF): ERL > 28 dB and SRL > 20 dB
  • Line impedance: 2-wire Terminal mode 600 ohms + 2.16 uF, 4-wire Terminal mode 600 ohms, 4-wire Cable mode 150 ohms, or 600 ohms (unloaded cable) or 1200 ohms (loaded cable)
  • Receive gain adjustment (from DLC): 2-wire Terminal mode -10.0 dB to 0.0 dB, 4-wire Terminal mode -16.0 dB to +8.5 dB, 4-wire Cable mode -9.0 dB to +6.0 dB
  • Transmit gain adjustment (toward DLC): 2-wire Terminal mode -5.5 dB to +4.5 dB, 4-wire Terminal mode -7.0 dB to +17.5 db, 4-wire Cable mode -6.0 dB to +9.0 dB
Environmentals
  • Operating temperature: -40 F to +149 F (-40 C to +65 C)
  • Relative humidity: 5%-95% noncondensing
Compliance
  • GR-57-CORE
  • GR-1089-CORE (for lightning and power cross)
General
LED Indicators
  • Blinking Red, FAIL - Illegal signaling
  • Red, FAIL - The unit has failed
  • Green, BUSY - The E&M plug-in card is busy or is being tested; do not remove from service
Software Support
  • Minimum base software FP15 and higher
Installations
  • Supported in Tellabs 1000 CBA
Product Specifications Sheet

E&M Special Services (E&M) Plug-in Card
Product Specifications
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