# General hardware specifications

This topic describes:

- Mechanical specifications

- Host interface

- Telephone interface

- H.100 compliant interface

- Environment

- Maximum board operating temperature

- Power requirements including the telco power per board

- Signaling module

- Rack mount ringing power supply specifications

## Mechanical specifications

Feature | Specification
--- | ---
TDM Bus | Features one complete H.100 bus interface with MVIP-95 enhanced-compliant switching
Processing power | One TMS320C549 DSP
Board weight | Main board: .50 lb (.18 kg) Daughterboard: .15 lb (.08 kg)
Software | Natural Access

## Host interface

Feature | Specification
--- | ---
Electrical | 5 V PCI bus interface compliant with the PCI specification, version 2.2. The PCI interface is a 33 MHz, 32-bit target device
Mechanical | Designed to the PCI specification
Bus Speed | 33 MHz maximum
I/O Mapped Memory | Memory mapped interface for efficient block data transfers
Addresses/Interrupts | Automatically configured by PCI BIOS (no jumpers or switches)
BIOS | Required conformance to PCI specification version 2.2

## Telephone interface

At the end of the adapter cable on the CX 2000 board, there are two RJ-21 connectors with 24 circuits on the first, and eight circuits on the second. Refer to Connecting to station telephones for the RJ-21 connector pinouts and the ring pin and tip pin table.

## H.100 compliant interface

- Switchable access to any of 4096 H.100 timeslots.

- H.100 clock master or clock slave (software-selectable).

- Compatible with any H.100-compliant telephony interface.

## Environment

Feature | Description
--- | ---
Operating temperature | 0 to 50 degrees C
Storage temperature | -20 to 70 degrees C
Humidity | 5% to 80%, non-condensing

## Maximum board operating temperature

Thermometer ID | In temperature controlled laboratory environment | In the field
--- | --- | ---
0 | 65° C | 90° C
1 | 65° C | 90° C
2 | 60° C | 90° C
3 | 60° C | 90° C
4 | 60° C | 90° C

For more information, refer to Verifying the board's operating temperature.

## Power requirements

State | Requirement
--- | ---
BD_SEL# Active/CX 2000 Active | 1 A maximum @ 5 V

### Telco power per board

Input power | Current | Maximum voltage
--- | --- | ---
-24 to-30 V DC (low battery) | 1.0 A maximum | 30.5 V DC
-24 to -48 V DC (high battery) | 1.0 A maximum (with 32 stations active) | 52.0 V DC
Ring voltage | 0.25 A (with 20 ports active) | 92.0 V AC, 52.0 V DC

## Signaling module

Specification | Value
--- | ---
Return loss (ref. 600 Ohms +2.2 mF standard) | 20 dB minimum (ERL)
4 to 2 wire gain tolerance | +/- 1 dB
4 to 2 wire gain range | +6 to -6 dB
2 to 4 wire gain tolerance | +/- 1 dB
2 to 4 wire gain range | +6 to -6 dB
Frequency response 300 Hz - 3200 Hz. reference to 1 kHz | +/- 1 dB
Trans-hybrid loss | 20 dB minimum @ 300 Hz - 3400 Hz into 600 Ohms
Signal overload level | +3 dBm at 0 dB gain
T-R input impedance (300 - 3200 Hz) | 600 Ohms
Idle channel noise through connection | < 20 dB rnC
Crosstalk transmit to receive channels | < -70 dB @ 1 kHz
Operating loop current | Maximum: 25 to 30 mA Minimum: 10 mA
Maximum ringer equivalence load | 1.5
Ringing voltage output | CX 2000 power supply module: 86 V AC, -48 V DC

## Rack mount ringing power supply specifications

The specifications in this topic apply to the NMS rack mount ringing power supply.

Description | A 19" w x 5.25" h rack mount chassis containing four separate modules, each rated for 2.2 A (DC) and 0.1 7 A (DC) output current. The modules operate in a parallel mode output current.
Input power | 90-132/180-264 V AC 47-63 Hz automatic range selection.
DC output | 24V DC/ 30 V DC and -48 V DC @ 2.2 A/module total.
DC output regulation | Less than 1%.
DC output ripple | Less than 0.5% peak to peak.
Output isolation | 24 V DC and -48 V DC isolated from chassis ground. AC output is referenced by -48 V DC output.
AC output | 0.17A/module with 100% duty cycle.
AC output frequency | 17, 20, 25, or 50 Hz +/-1 0% switch selectable.
AC output regulation | Less than 10% for the full input voltage range and no load to full load. 90 V AC maximum.
AC output wave form | Simulated sine wave with less than 20% distortion.
Current limiting | All outputs have current limiting with full protection and auto recovery.
Output indicator | Green LED on the module indicates that all outputs are operating. External signal indicates an alarm condition.
Module failure protection | A failure in any module results in its outputs being automatically taken offline.
Temperature range | Ambient temperature range is 0 to 50 degrees C for full load operation.
EMI design standards | Approved to FCC 20780, Part 15, Class B, EN55022, Class B, and EN50082-1.
Safety design standards | Approved to EN60950, UL1950 3rd edition and 1/24/00 CSA C22.2-950.

The following illustration shows the NMS power supply pinouts:

The mating connector is Positronics PLBO8M0050 with MC116N pins.