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Appendix D

Hardware Specifications

General

Board Capacity:

 · AG-T1 - One T1 (DSX-1) termination; 24 ports DSP voice and call processing per board

· AG-E1 - One CEPT E1 termination; 30 ports DSP voice and call processing per board

Each board features one complete MVIP interface with enhanced-compliant MVIP switching.

DSP Processing Power:

 · AG-T1 - 7 MIPS per port

· AG-E1 - 5.7 MIPS per port

· AG-T1 v2 - 12 MIPS per port

· AG-E1 v2 - 10 MIPS per port

DSPs:

 6 Texas Instruments TMS320C51 DSPs at 28.5 MIPS each

Microprocessor:

 25 MHz 80386SX

Memory:

 2 MB (expandable) DRAM and 256 K of fast static RAM for the on-board microprocessor (128 K shared with the host and 128 K shared with the DSPs)

Power
Requirements:

 2.5 Amps per board of PC/AT power at +5 volts

Operating Temp:

 0°C to 50°C

Storage Temp:

 -20°C to 70°C

Humidity:

 5% to 80%, non-condensing

Host Interface

Electrical:

 PC/AT bus designed to IEEE P996 ISA

Mechanical:

 PC/AT form factor, designed to meet IBM's specification, as described in IBM's Personal Computer Hardware Reference Library publication #6361674, Prototype Adapter.

Bus Speed:

 4 - 12 kHz

Max No. Boards per System:

 16 (Some operating systems have board restrictions. Refer to the AG Runtime Configuration and Developer's Manual for more information.)

Max No. of Ports per System:

 Limited only by host processor resources.

I/O Mapped
Memory:

 128 K of on-board interface memory accessed at DMA rates via I/O string move

I/O Addresses:

 Switch selectable to any of 64 I/O addresses

Interrupts:

 Choice of 7 software configurable interrupt lines with all AG boards sharing only 1 interrupt line

Audio Signal Processing

Receive Range:

 -68 to +3 dBm (optional configurable AGC above nominal -44 dBm)

Transmit:

 Programmable (nominal -12 dBm)

Silence Detection:

 Programmable (nominal -44 dBm)

Sampling Rates:

 8 ksamples/sec (telephone industry standard)

Speech:

 Compression rates from 16 to 176 kbit/s:

· 88 kbit/s & 176 kbit/s using 8- or 16-bit linear at 11 ksamples/sec (.WAV)

· 128 kbit/s 16-bit linear at 8 ksamples/sec

· 64 kbit/s mu-law or A-law per ITU-T G.711

· 32 kbit/s ADPCM using ITU-T G.726 algorithm

· 24 kbit/s ADPCM using ITU-T G.726 algorithm

· 16 kbit/s NMS adaptive coding

· 32 kbit/s OKI compatible ADPCM

· 24 kbit/s OKI compatible ADPCM

Tone Dialing

DTMF Digits:

 0 - 9, *, # and ABCD per ITU-T Q.23 and Q.24

MF digits:

 0 - 9, KP, ST, ST1, ST2, ST3 per US(R1) and ITU-T Q.321 and European MFC/R2 forward/reverse tones per ITU-T Q.441

Rate:

 Programmable (10 digits/sec nominal)

Dialing Parameters:

 Software controllable

Dialing amplitude:

 Network compatible (configurable by country) programmable range -33 dBm to 1 dBm

Dial tone wait:

 Wait-for-dial-tone capability

Pulse Dialing (AG-T1)

10 Digits:

 0 - 9

Pulsing Rate:

 10 pulses/sec (nominal)

Make/Break Ratio:

 Network compatible (configurable by country) 40/60 nominal

DTMF Tone Detection

DTMF Digits:

 0 - 9, *, #, ABCD

Dynamic Range:

 -40 dBm to 0 dBm nominal, (configurable)

Tone Duration:

 40 ms (minimum)

Acceptable Twist:

 10 dB

Talk-off:

 Exceeds all Q.24 standards including Mitel CM 7291 and Bellcore
TR-TSY-000762 tests

MF Tone Detection

MF Digits:

 0 - 9, KP, ST, ST1, ST2, ST3 per US(R1)

MFC-R2 Digits:

 All 15 codes, forward and backward

Dynamic Range:

 Network compatible (configurable by country) -35 dBm to -5 dBm (nominal)

DSX-1 Telephony Interface (AG-T1)

Interface:

 Complete interface to one T1 trunk

Framing:

 D3/D4 (ESF or SLC-96 available on special order)

Insertion and Extraction:

 ABCD bits

Zero bits:

 Selectable B8ZS, jammed bit (ZCS) or no zero code suppression

Alarm Signal Capabilities:

 Yellow, Red and Blue

Counts:

 Bipolar violation, F(t) error and CRC error

Robbed-bit:

 Selectable on a per channel basis

Loopback:

 Per channel and overall under software control. Automatic remote loopback with CSU option

Connector:

 RJ48C

AG-T1 Compliance

Emissions:

 · US FCC Part 15 Class A

· US FCC Part 68

· ISC

· DOC Class A

Safety:

 · NRTL Recognized to UL 1459

· CSA Recognized to Standard 225

Standards:

 · Digital Multiplexer Requirements and Objectives: AT&T Pub. 43802, July 1982

· Service Description and Interface Specifications: AT&T TR 62411, ACCUNET T1.5

· Carrier to Customer Installation DS1 Metallic Interface: ANSI T1E1/88-001R1, Feb. 1988

· ANSI T1 Standard for ISDN Primary Interface: T1E1.4/8868 (Proposed text) April 1988

· Primary Rate User-network Interface Layer 1 Specification: ITU-T I.431, June 1988

· Integrated Services Digital Network (ISDN) Primary Rate Interface Specification: AT&T Pub. TR41449 and TR41459, June 1985

CEPT E1 G.703 Telephony Interface (AG-E1)

Interface:

 Full-featured G.703 2048 kbit/s trunk interface

Framing:

 CEPT G.703 Channel-Associated Signaling

Insertion and Extraction:

 ABCD bits for Channel-Associated Signaling and HDLC/LAPD for generating/terminating a data link

Line code:

 HDB3 or AMI (no zero-code suppression)

Alarm Signal Capabilities:

 Loss of Frame Alignment (OOF), Loss of Signaling Multiframe Alignment, and Loss of CRC Multiframe Alignment (red), Remote Alarm and Remote Multiframe Alarm(yellow), Alarm Indication Signal(AIS) (blue)

Counts:

 Bit error rate, CRC errors

Loopback:

 Per channel and across channels under software control

Connector(s):

 75 ohm BNC coax or 120 ohm RJ48C

AG-E1 Compliance

Emissions and Immunity:

 · EN55022: 1992/A1:1995 Class A

· EN50082-1:1991

Safety:

 · EN60950: 1992, with amendments 1,2, 3

· EN41003: 1993

Standards:

 · G.703: Physical / Electrical characteristics of hierarchical digital network

· (75 ohm board only) UK requirement for private leased line (NTR4)

· (120 ohm board only) European requirements for CTR12 (private leased line) and iCTR4 (Primary Rate ISDN).

· G.704: Synchronous frame structures used at primary and secondary hierarchical levels

· G.706: Frame alignment and cyclic redundancy check procedures

· G.732: Characteristics of primary PCM multiplex equipment

· G.823: Control of jitter and wander within digital networks based on 2048 kbit/s hierarchy

· ANSI T1E1/88-00 IRI carrier to customer installation DS1 metallic interface

· European EMI/EMC Standards (EN55022, EN50082-1)

MVIP Interface

Enhanced-compliant MVIP interface provides total flexibility in connecting trunk channels to DSP resources, to other trunk channels, or to MVIP bus timeslots. Note that connections between trunk channels, or between trunk channels and other on-board resources, do not tie up MVIP bus timeslots. MVIP timeslots are only consumed when needed for inter-board connections.


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