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
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.
-5
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.
-6 IGX 8 Installation Manual, Release 8.2.0
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.
-7
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.
-8 IGX 8 Installation Manual, Release 8.2.0
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,
Input Data Rate: 56 Kbps to 2.048 Mbps. (Max. rate available only with one of four
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
Data Clocking: Normal or looped.
data frame is discarded at receiving node.
ports/card active).
leads and timing.
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.
-9
ATM Interface
Type of Service: Permanent Virtual Circuit (PVC)
Interface Types: User-to-Network (UNI) and Network-to-Network (NNI) per ITU
Data Rates: T3 or E3
ATM Layer: Physical Layer Convergence Protocol per AT&T publication
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)
I.361 and I.363
TA-TSY-00772 and 000773 for T3; ITU I-361 with HEC for E3
Network Synchronization
External Clock Sources: The IGX switch synchronizes to the nearest, highest-stratm clock available.
Internal to Node Source: T1: 1.544 MHz, ± 10 ppm (stratm 4)
Clocking Hierarchy: Dynamic primary, secondary, and tertiary clocking
Any T1, E1, T3, E3, OC3 (STM-1) line, trunk, or optional external clock
inputs can serve a clock source.
E1: 2.048 MHz, ± 10 ppm (stratm 4)
Without a defined external clock reference, the IGX defaults to its internal
clock source.
-10 IGX 8 Installation Manual, Release 8.2.0
Network Management Control
Network Control Terminal: StrataView Plus workstation and StrataCom software required for
graphical display of network status, statistics gathering and display,
and automatic downloading of software.
Control Terminal: DEC VT100, WYSE 85, Televideo 970 or equivalent terminal for
basic system configuring and alarm monitoring.
Remote Alarm Reporting: Auto-dial modem connects to one of two control ports on each IGX
8 node for automatic reporting of network alarms.
Remote Diagnostics: Auto-answer modem connects to one of two control ports on each
IGX node for remote diagnostic access by StrataCom ISC or other
authorized personnel.
Network Control Ports: Two ports per node, (one RS 232C interface and one Ethernet LAN
port).
Alarm Notification: Status of all trunks and nodes in network distributed to and stored by
each individual node. Reported to StrataView Plus workstation at
connecting node.
External Alarms: Meets Bellcore Compatibility Bulletin #143 and AT&T Technical
Reference PUB 43801 DS1 (T1) facility alarm requirements when
equipped with DTI group.
Indicators and Controls: Active and Fail lights on all cards and power supplies.
-11
-12 IGX 8 Installation Manual, Release 8.2.0
Loading...