Cisco Systems IGX 8 User Manual

APPENDIX

General

A

System Specifications

This appendix contains system specifications.

This section provides general system information on the IGX 8.
System Capacity: 1 shelf with 8 card slots.

Requires 2 dedicated front slot(s) for NPMs.
Requires 2 dedicated back slots for SCMs (1 slot with blank plate).
Up to 6 T1/E1 circuit ports.
Up to 6 T1/E1 packet trunks.
Up to 48 synchronous data ports.
Up to 25 Voice, Data, and/or Frame Relay Module groups.

Enclosure Size: IGX 8 Standalone/Rackmount:

Height: 25 ins. (63.5 cm) standalone; 24.5 ins. (62.3 cm), rack
Width: 19.9 ins. (50.5 cm), standalone; 19 ins. (48.3 cm.), rack

Depth: 26.5 ins. (67.3 cm), standalone and rack-mount
Shipping Weight: 270 pounds (122.7 kilograms)
Clearance Requirement: Min. clearance: 30 inches front; nominal 30 ins. rear; 12 ins. side.
Power Input Voltage: AC system: 100 to 240 VAC (90–264 under-voltage and

over-voltage tolerance), 47 to 63 Hz.

DC system: –42 to –56 VDC.

Each AC supply can provide up to 400 watts to the card shelves.

Space for 4 power supplies.
Current Requirements: Configuration dependent - use Network Design Tool for exact

requirements. For planning purposes, use the following:

• AC System 10 Amps Max. for 110 VAC, 5 A for 220 VAC.

• DC System 20 Amps max. at –48 VDC; 25 Amps at –42 VDC (worst case)

-1

Input AC Power
Connector:

DC Input Connections 3-wire pluggable terminal block with screw terminal connectors.
Operating Environment: 0° to 50° C (32° to 104° F). Maximum 85% relative humidity
Shock: Withstands 10 G, 10 ms. at 1/2 sine wave.
Vibration: Withstands 1/4 G, 20–500 Hz.
Heat Transfer to Room: IGX 8: 2720 BTUs max.

Voice Circuit Support

Voice Channel Interface: 24-channel T1 (D4 format).

IEC 16 Amp input connector. 6 different power cords are available
to comply with the standards of individual countries. Power cords
are 6 feet (about 2 meters) long. See AC Power Cabling for details.

24-channel T1-ESF (using CVM8).

30-channel framed CEPT E1.

31-channel framed CEPT E1.
Voice Compression

Available:

Compression Algorithm: ITU-T G.721, G.723, G.726.

PCM Encoding Types: Accommodates µ-Law or A-Law encoding,

Channel Gain Control: –8 dB to +6 dB.
Signalling Modes: T1: Robbed bit or CCS (ISDN).

Signalling Conditioning: Various make-busyand forced idle routines during circuit alarm can

Quantizing Distortion
Added:

32/24/16 Kbps ADPCM.

32 Kbps ADPCM.

Voice Activity Detection compression.

StrataCom 32 Kbps ADPCM.

End-to-end conversion available.

E1: Channel Associative Signalling (CAS) or Common Channel

Signalling (CCS).

be specified on a per-channel basis.

2.5 Quantizing Distortion Units (QDU)s with 32 Kbps ADPCM

over 1 hop plus 0.7 QDUs with Digital Loss PAD (µ-law or A-Law).

-2 IGX 8 Installation Manual, Release 8.2.0

Data Channel Support

Sync. Data Interfaces: RS-232C/D, RS-449/422, V.24, X.21, and V.35

with IGX 8 as DCE or DTE.
High-Speed Data Rates

(HDM):
Low-Speed Data Rates: 2.4 to 19.2 Kbps per LDM port.
Ports per card: LDI: 4 or 8.

Control Leads Supported: SDI: Per interface standards.

Control Lead Sync
w/Data:

DS0A Interface: Superrate, 56 Kbps to 512 Kbps (8 DS0s) per port.

Data Clocking: Synchronous and isochronous clocking.

Pleisochronous
Clock Range:

2.4 Kbps to 1.344 Mbps.

SDI: 4.

SDI: Up to 7 in each direction for fast EIA.

LDI: 3 in each direction for DCE and DTE for each port.

Control leads are sampled every 50 ms. and changes will normally

follow data within 100 to 1000 msec. Fast EIA lead will be within 1

byte.

Subrate: One 2.4/4.8/9.6/19.2/ or 56 Kbps per DS0

Per Bell TR-TSY-000458, TR-TSY-000280, TR-TSY-000083, and

TR-TSY-000077.

Normal, looped, and split clock configurations.

± 2 percent of nominal data rate.

-3

Digital Data Service Interface

Ports per card: Four.
Electrical Interface: Digital Data System (DDS)—AT&T Pub. 62310, November 1987.
Interface Type: DSU or OCU (software selectable).
Data Rates: 2.4, 4.8, 9.6, 19.2, and 56 Kbps (software selectable).
DDS Data Encoding: Standard DDS Bipolar Return to Zero. Alternate Mark Inversion

coding with bipolar violation sequences for zero suppression and

control.
Data Compression: Repetitive Pattern Suppression (RPS): 7, 8, or 16 bit pattern

matching.
Synchronization Modes: External (DSU only)

Looped (OCU only).
Control Codes Recognized: Idle.

Zero Suppression.

Out-of Service.

Loopback Sequences.
Control Code Translation: Translation of RTS to IDLE.
Alarm Code Translation: Translation of the logical NOR of Out-of-Service

Sync Fail.

Excessive Bipolar Violations.

No Signal to DSR (DSU only).

No Signal to DTR (OCU only).
Connector: ISO 4903, female DB-15 type connector.

-4 IGX 8 Installation Manual, Release 8.2.0