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DCOSS Specifications

T1 DSX-1 Telephony Interface

T1 Signal RJ48C interface
Standards Compliance ANSI T1.102, T1.403
Line Code Format AMI or B8ZS
Framing Format D4 or ESF
Alarm Signals Loss of Frame Alignment, Loss of Signaling Multiframe Alignment, Loss of CRC Multiframe Alignment (red), Remote Alarm and Remote Multiframe Alarm (yellow), Alarm Indication Signal (AIS) (yellow)

CEPT E1 G/703 Telephony Interface

E1 Signal RJ48C interface (120 ohm)
Line Code Format HDB3 or AMI (no zero code suppression)
Framing Format CEPT G.703/G.704 CAS
Alarm Signals Loss of Frame Alignment, Loss of Signaling Multiframe Alignment, Loss of CRC Multiframe Alignment (red), Remote Alarm and Remote Multiframe Alarm (yellow), Alarm Indication Signal (AIS) (yellow)

T1/E1 Interface (common specifications)

Sampling Rates 8k samples/sec
Speech Compression 11 kHz, 8- or 16-bit linear (.WAV)
64 kbps m-Law or A-Law per ITU-T G.711 (.PCM)
Onboard DSPs Texas Instruments TMS325C549 DSPs at 100MIPS each
Onboard Microprocessor 100 MHz 80486
Trunks avail per system 2 to 16 T1, E1, or combination.
Regulatory Certification EMC:US and Canada: FCC Part 15, Subpart J, Class A
Europe: EN55022 1994 Class B (with shielded cable); EN50082-1 1992
Australia: AS 3548
Safety:US and Canada: NRTL recognized to cUL 1950, 3rd edition
Europe: EN60950 1992 + Amendments
1,2,3 and 4; BABT-AN 48 Issue 6
Australia: TS001 1996; AS/AZ
Telecom:US and Canada: FCC Part 68 and DOC CS-03
Europe: CTR4, CTR12
UK: NTR4
Environment Operating Temperature: 0 C to 50 C
Storage Temperature: -20 C to 70 C
Humidity: 5 to 80%, non-condensing

SS7 Board Interface

Network Interfaces Tri-port V.35 serial with external pod
Two T1 (1.544 Mbps) or two E1 (2.048 Mbps) digital trunk interfaces
On-Board Processors 33MHz 68EN360 Quad Integrated Communications Controller (QUICC) with 4 MB dynamic RAM
Regulatory Certification USA and Canada: Complies with FCC Class A
Environment Operating Temperature: 0C to 50C
Humidity: 90%,non-condensing


Audio Signal Processing

Receive Range -68 to +3 dBm
Transmit -28 to 0 dBm
Sampling Rates 8 ksamples/sec
(telephone industry standard)


DTMF/MF Tone Dialing/Detection

DTMF Digits 0-9, *, # and ABCD per ITU-T Q.23 and Q.24
Dynamic Range -40 dBm to 0 dBm nominal
Tone Duration 40 ms (minimum)
MF Digits 0-9, KP, ST, ST1, ST2, ST3 per US (R1) and ITU-T Q.321
Dynamic Range -35 dBm to -5 dBm nominal


POTS (Plain Old Telephone Set) Interface

Connector 62-pin D connector provided with 25-pair Amphenol
RJ-21X interface
Line interface 600 ohms nominal
Return loss ERL: 20 dB, SRL HI: 30 dB,
SRL LO: 11 dB
Inter-hybrid Crosstalk -80 dB min (0 dBm, 300 to 3400 Hz)
Loop Current Detection 11 mA (Threshold)
Transmit loss 0 dB, +1 dB (min), -1.3 dB (max)
Receive loss 0 dB, +1 dB (min), -1.3 dB (max)
Attenuation 0 dB to -9 dB (3 dB increments)
PCM encoding µ-Law or A-Law
Cable Length to Telephone 24 AWG, 2000 ft. (0.5 mm, 600 M) max twisted pair
Max Ren per Interface 1.0
Ports avail per system 8, 16, 24, 48
Regulatory Certification EMC:US and Canada: FCC Part 15, Subpart J,
Class A
EU Countries: EN55022 1994 Class A;
EN5082-1 1997
Safety:US and Canada: UL 1950, 2nd edition
EU Countries: EN60950 1992 + Amendments 1,2,3 and 4
External Power Supply (with Ring Generator) Power: 100 to 120 VAC and 220 to 240 VAC (jumper modifiable)
Output: -24 VDC (1 A min current) and 93 VAC (120 mA min current)
Regulation: ± 1 V
Ripple: 5 mV rms maximum


Standards Compliance

T1 and E1 Standards and
µ-Law and A-Law Standards
G.703, G704, G.706, G.732, G.823
IRI carrier to customer installation
DS1 metallic interface
ANSI T1E1/88-00
European EMI/EMC Standards EN55022,EN50082-1
PRI ISDN Q.931
ANSI T1 standard for ISDN PRI Interface T1E1.4/8868 April 88
PRI User-Network Interface Layer 1 ITU-T I4.31, June 88
ISDN PRI Interface AT&T Pub. TR41449 and TR41459, June 85
ITU SS7 Q.701-Q.704, Q.761-Q.764
ANSI SS7 ANSI T1.111,113


Computer Requirements

Pentium 233 or equivalent with minimum of 6GBytes of hard disk, WIN NT 4.0, 128 MBytes of RAM, full length PCI and ISA expansion slots.


Station Connect Power Supply

Talk Battery to power OWS phones -24 Volt DC ( 1 volt), 1 A minimum
current
Ringing voltage 93 Volt AC ( 1 volt), 120 mA
minimum current, 20 Hz
5 mV RMS maximum ripple

RJ-45 Pinout Assignments

  • Pin 1: R - Receive from Network
  • Pin 2: T - Receive from Network
  • Pin 3: No connection
  • Pin 4: R1 - Transmit to Network
  • Pin 5: T1 - Transmit to Network
  • Pin 6: No connection
  • Pin 7: Optional shield, not used
  • Pin 8: Optional shield, not used


  • Click here for the Available PC Platforms.

    Specifications are subject to change without notice.


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