Cisco IGX 8 User manual
APPENDIX
-1
System Specifications
A
This appendix contains system specifications.
General 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)
-2 IGX 8 Installation Manual, Release 8.2.0
Voice Circuit Support
Input AC Power
Connector: 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.
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 Channel Interface: 24-channel T1 (D4 format).
24-channel T1-ESF (using CVM8).
30-channel framed CEPT E1.
31-channel framed CEPT E1.
Voice Compression
Available: 32/24/16 Kbps ADPCM.
32 Kbps ADPCM.
Voice Activity Detection compression.
Compression Algorithm: ITU-T G.721, G.723, G.726.
StrataCom 32 Kbps ADPCM.
PCM Encoding Types: Accommodates µ-Law or A-Law encoding,
End-to-end conversion available.
Channel Gain Control: –8 dB to +6 dB.
Signalling Modes: T1: Robbed bit or CCS (ISDN).
E1: Channel Associative Signalling (CAS) or Common Channel
Signalling (CCS).
Signalling Conditioning: Various make-busy and forced idle routines during circuit alarm can
be specified on a per-channel basis.
Quantizing Distortion
Added: 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).
-3
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): 2.4 Kbps to 1.344 Mbps.
Low-Speed Data Rates: 2.4 to 19.2 Kbps per LDM port.
Ports per card: LDI: 4 or 8.
SDI: 4.
Control Leads Supported: SDI: Per interface standards.
SDI: Up to 7 in each direction for fast EIA.
LDI: 3 in each direction for DCE and DTE for each port.
Control Lead Sync
w/Data: 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.
DS0A Interface: Superrate, 56 Kbps to 512 Kbps (8 DS0s) per port.
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.
Data Clocking: Synchronous and isochronous clocking.
Normal, looped, and split clock configurations.
Pleisochronous
Clock Range: ±2 percent of nominal data rate.
-4 IGX 8 Installation Manual, Release 8.2.0
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.
-5
T1 Interface
Line Rate: 1.544 Mbps, ±50 bps (±200 bps VCO lock range).
Line Code: Bipolar AMI or B8ZS.
Framing Formats: Fractional T1, adjacent or alternating channels.
Minimum of four DS0 channels required.
Signal Level: DSX-1 compatible.
Line Impedance: Terminated = 100 Ohms nominal. Bridged = 1 KOhm.
Pulse Amplitude Individual pulse amplitude 2.4 V–3.6 V (making a total
base-to-peak amplitude of 6 V ±.6V)
Minimum Pulse Density: Zero code suppression, either LSB or MSB.
Frame Format: D4 and Extended Superframe (ESF).
VF Signalling: Robbed bit D4 with A and B bits.
Max. Line Lengths: Up to 533 feet with equalizers using ABAM cable.
Jitter Transfer: Meets AT&T PUB 62411 specifications.
Jitter Tolerance: Meets ANSI standards and AT&T PUB 62411 specs.
Connector: DB 15 female.
-6 IGX 8 Installation Manual, Release 8.2.0
E1 Interface
Line Rate: 2.048 Mbps, ±50 bps (±200 bps VCO lock range)
Line Code: Bipolar AMI or HDB3
Line Impedance: 120 Ohms (balanced) or 75 Ohms (balanced or unbalanced)
Minimum Pulse Density: Zero code suppression via HDB3 coding
Frame Format: Unframed, 32-channel (G.703). Framed: 30 or 31-channel CEPT
multiframe per ITU-T G.704.
VF Signalling: CAS or CCS
Max. Line Lengths: E1 output complies with G.703, so cabling must not exceed
–6dB/1000 feet at 1024 kHz (applies to 75 Ohm coax or 120 Ohm
twisted pair up to 350 meters or 1000 feet). StrataCom supplies
cable with a maximum attenuation of 7 dB /1000 ft., so the
maximum length of this cable is 850 feet (260 meters).
Jitter: Meets G.823.
Electrical Interface: Complies with G.703 Specification.
Connector: DB 15 female or BNC.
-7
T3 Interface
Line Rate: 44.736 Mbps ±20 ppm, asynchronous.
Line Code: B3ZS.
Clock Source Mode: Internal (Asynchronous).
Signal Level: DSX-3.
Framing Formats: M13 mode, C-bit parity.
Alarms Processed: AIS.
LOS.
Remote Alarm Indication.
Loss Of Framing.
Line Errors Counted: BPV.
Parity Bit Errors.
Receiver Input Impedance: Terminated = 75 ohms.
Transmission Modes: Point-to-Point or Drop and Insert.
Jitter: Meets ACCUNET T45 specification (Pub 54014).
Connector: 75 ohm BNC.
Max. Line Lengths: 450 ft. (137 m.) to DSX-3 using 75 Ohm coaxial cable.
Indicators: RED Alarm.
YELLOW Alarm.
LOS.
AIS.
-8 IGX 8 Installation Manual, Release 8.2.0
E3 Interface
Line Rate: 34.368 Mbps ±20 ppm, asynchronous.
Line Code: HDB3.
Clock Source Mode: Internal (Asynchronous).
Signal Level: ITU-T G.703
Framing Formats: ITU-T G.804, G.832,
Alarms Processed: AIS.
LOS.
Remote Alarm Indication.
Loss Of Framing.
Line Errors Counted: BPV.
Parity Bit Errors.
Receiver Input Impedance: 75 ohms unbalanced.
Transmission Modes: Point-to-Point or Drop and Insert.
Jitter: per ITU-T G.823.
Connector: 75 ohm BNC.
Max. Line Lengths: 137 meters (450 ft.) using specified cable.
Indicators: RED Alarm.
YELLOW Alarm.
LOS.
AIS.
-9
Frame Relay Interface
Type of Service: Permanent Virtual Circuit (PVC).
Data Interface: Per ITU-T I.122 and ANSI T1/S1 Standards.
Data Transfer Protocol: LAP-D frame level core functions.
Input Data Format: High Level Data Link (HDLC) protocol.
Input Data Frame Length: Up to 4096 bytes max.
Frame Integrity Check: Frame Check Sequence and CRC check of data frame. If CRC fails,
data frame is discarded at receiving node.
Input Data Rate: 56 Kbps to 2.048 Mbps. (Max. rate available only with one of four
ports/card active).
No. of Ports per Card: 4
No. of PVCs per Port: 252 per FR card, distributed in any combination.
Port Electrical Interface: ITU-T V.35. IGX 8 can act as a DCE or DTE for direction of control
leads and timing.
Data Clocking: Normal or looped.
Virtual Circuit Identifier: Data Link Connection Identifier (DLCI).
Control Protocol: Local Management Interface with XON/XOFF type flow control.
IGX sets FECN and BECN bits in frame relay frame.
Bundled Connections: 252 virtual circuits per card
1024 virtual circuits per node.
Billing Time Accuracy: Upon request from user device, IGX will provide GMT from any
node accurate to within 1 second.
-10 IGX 8 Installation Manual, Release 8.2.0
ATM Interface
Network Synchronization
Type of Service: Permanent Virtual Circuit (PVC)
Interface Types: User-to-Network (UNI) and Network-to-Network (NNI) per ITU
I.361 and I.363
Data Rates: T3 or E3
ATM Layer: Physical Layer Convergence Protocol per AT&T publication
TA-TSY-00772 and 000773 for T3; ITU I-361 with HEC for E3
Cell Rate: 96,000 cells/sec. for T3, 80,000 cells/sec. for E3
Adaptation Layer: AAL5
No. of Ports per card: 4
No. of PVCs per card: 255
VPI Addressing Range: 0–255
VCI Addressing Range: 0–65535
Traffic Queues: CBR, VBR, and ABR
Management Protocol: Interim Layer Management Interface (ILMI)
External Clock Sources: The IGX switch synchronizes to the nearest, highest-stratm clock available.
Any T1, E1, T3, E3, OC3 (STM-1) line, trunk, or optional external clock
inputs can serve a clock source.
Internal to Node Source: T1: 1.544 MHz, ±10 ppm (stratm 4)
E1: 2.048 MHz, ±10 ppm (stratm 4)
Clocking Hierarchy: Dynamic primary, secondary, and tertiary clocking
Without a defined external clock reference, the IGX defaults to its internal
clock source.
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