IOP and IOA Module Specifications
8-port Subrate Module
Beta Draft Confidential
CBX 500 Multiservice WAN Switch Hardware Installation Guide 4/5/03A-41
Interface Standards
• ANSI T1.102
• ANSI T1.107a (DS3 format specifications)
• ANSI T1.231 (DS1/DS3 performance monitoring)
Other Standards
• Frame Relay Forum (FRF)
• RFC 1483
• RFC 1407 (DS3 link statistics)
• DS3 MIB, January 1993 (DS3 link statistics)
• Bellcore TR-NWT-000820
Physical Interfaces
Eight DS3 ports, each configurable to a vendor-specific DS3 subrate.
Physical Connectors
Two 75-ohm BNC connectors for each port (transmit/receive)
Line Coding
B3ZS or vendor proprietary
Framing
•M13mode
• C-Bit parity mode
Signal Levels
• Receive: Peak pulse amplitude from 0.2 to 0.85 volts
• Transmit: Conformance to ANSI T1.102 pulse template and amplitude
(0.36 volts to 0.85 volts) for cable lengths up to 450 feet
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