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ATM2 DS3 IQ PIC (M320 Router)


Software release


  • Four DS3 ports

  • Power requirement: 0.41 A @ 48 V (20.0 W)

  • Fine-grained queuing per logical interface

  • ATM standards compliant

  • Model number: PB-4DS3-ATM2

Hardware features

  • 16-MB SDRAM memory for ATM segmentation and reassembly (SAR)

  • ATM switch ID

  • Configurable framing options:

    • C-bit with ATM direct mapping

    • C-bit with Physical Layer Convergence Protocol (PLCP) framing (default)

    • M23 ATM direct mapping

    • M23 with PLCP framing

  • Internal and loop timing

Software features

  • Per-virtual circuit (VC) and per-virtual path (VP) traffic shaping

  • Unspecified bit rate (UBR) traffic shaping

  • Fine-grained variable bit rate (VBR) traffic shaping

  • Circuit cross-connect (CCC)

  • ATM Inverse Address Resolution Protocol (ARP), which enables routers to automatically learn the IP address of the router on the far end of an ATM permanent virtual circuit (PVC)

  • Simple Network Management Protocol (SNMP):

    • Management Information Base (MIB) 2 (RFC 1213)

    • ATM MIB (RFC 1695)


  • AAL5 encapsulations:

    • ATM-VC-MUX


    • ATM-Cisco-LLPID

    • ATM-SNAP


Cables and connectors

  • 10 ft (3.05 m) posilock SMB to BNC (provided)

  • Four pairs of Rx and Tx coaxial cables


One tricolor per port:

  • Off—Not enabled

  • Green—Online with no alarms or failures

  • Yellow—Online with alarms for remote failures

  • Red—Active with a local alarm; router has detected a failure

Alarms, errors, and events

  • Alarm indication signal (AIS)

  • Far-end block error (FEBE)

  • Frame error

  • Idle code

  • Idle received

  • Local and remote loopback

  • Loss of signal (LOS)

  • Out of frame (OOF)

  • Path parity error

  • Yellow alarm