Enterasys-networks Security Router X-PeditionTM Manuel d'utilisateur télécharger pdf (Page 90)

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Features

4-2 Configuring T1/E1 & T3/E3 Interfaces

• Support for local and remote loopback

• Support for an IP interface as a loopback (refer to the CLI Reference Guide for an example)

• Timing - line and internal

• Framing - T1: SF, ESF; E1: CRC4, NO-CRC4

• Line encoding - T1: AMI, B8ZS; E1: AMI, HDB3

• Data inversion

• Loopback Tests - local, network line, network payload, inband FDL

• Alarm detection - all levels of alarm/event detection and signaling

• T1 Drop and Insert (D&I NIM) with One to One voice DS0 bypassing

The following features are offered on the T3/E3 interfaces:

T3 Mode

The following features are offered on T3 interfaces:

• Framing - M13 and C-bit parity

• Line build out - short (0 to 250 feet) and long (250 to 450 feet)

• Line interface - 75-ohm BNC coax female connectors

•Clock - line (slaved to network receive clock) and internal (private clock source)

• Line rate - 44.736 Mbps (gross rate including overhead and payload)

• Full Rate - 44.2 Mbps (payload rate only)

• Sub-rate - approximately 3 Mbps increments up to 44.2 Mbps

• Sub-rate compatible DSUs supported:

– Quick Eagle (formerly Digital Link) DL3100 T3 or Cisco-300-44210 Kbps

– Larscom Access T45-3100-44210 Kbps

– ADC Kentrox T3/E3 IDSU-1500-35000, 44210 Kbps

– Adtran T3SU 300-75-44210Kbps

– Verilink HDM 2182-1500-44210 Kbps

• Scrambling - same as for sub-rates, DSU vendor dependant

• Diagnostics - ANSI T1.107 compatible loop backs (initialized from the network)

• Performance monitoring local network port statistics - Current 15 -minute, 24-hour (96 *15-

minute intervals) and total for 24 hours

E3 Mode

The following features are offered on E3 interfaces:

• Framing - G751 or bypass

• Line interface - 75-ohm BNC coax female connectors

• Clock - line (slaved to network receive clock) and internal (private clock source)

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Enterasys-networks Security Router X-PeditionTM Manuel d'utilisateur Page 90

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