PB-TDM1-CONTRA Series Discontinued

Contra G.703 64Kbps CESoPSN Unit
(1) DB15 Port + (2) 10/100/1000Base-T Ports + (1) 100/1000Base-X SFP Slot

  • PB-TDM1-Contra

The PB-TDM1-CONTRA Series enables a Contra-clocked, 64Kbps G.703 circuit to be transported over Ethernet or IP networks. The units are typically deployed in pairs, connecting the Contra clocked CPE across the packet network. Point to multi-point applications are supported with a maximum of 16 slaved devices connecting to a master unit.

For Contra applications requiring low latency operation, comprehensive features are available via the management system to tune the unit’s performance.

PB-TDM1-CONTRA Series Discontinued

Related Products

    PB-TDM1-CONTRA Series Overview


    • Multi-standard TDM pseudowire support: CESoPSN, SATOP, TDM over IP
    • Highly accurate & stable clock recovery
    • Oscillator Performance
      • Hold-over 24hrs 150ppb (typical)
      • Aging per day 10ppb
      • Temperature Stability 12ppb
    • G.823/4 Synchronization levels
    • Contra port
      • 1 port – DB15 (female) connector
      • G.703 64kbps contra
      • Presents as DCE (cables for DTE)
      • ITU G.706
      • Transparent to user signalling
    • Support for Jumbo Packets up to 9,600 bytes on Ethernet ports
    • Port based VLAN, IEEE 802.1Q VLAN including Q-in-Q
    • Link Aggregation Control Protocol (LACP)
    • Ring Protection: MSTP, RSTP, STP
    • SNMP v1, v2c and v3
    • RMON and Syslog
    • Management via CLI, Telnet, SSH, SSL, SNMP, Web GUI
    • Authentication: Radius, TACACS+, IEEE 802.1x
    • IGMP Snooping
    • LLDP
    • IPv6 and IPv4 dual protocols
    • Firmware/Configuration backup/restore via Web/FTP
    • TDM packets can be assigned IP Diffserv (DSCP) or ToS and IEEE 802.1p CoS values
    • Supports full IEEE 802.1Q tagging & associated IEEE 802.1p CoS prioritization levels
    • All egress packets, including TDM links, can be prioritized across four output queues
    • Various clocking options for different network types & clock recovery requirements
    • Quality of Service: Supports 8 hardware queues with strict priority and WRR, shaping, policing. Per port bandwidth management.


    • Contra

    PB-TDM1-CONTRA Series Tech Specs


      • IEEE 802.3
      • IEEE 802.3u
      • IEEE 802.3z
      • IEEE 802.3ab
      • IEEE 802.3x
      • IEEE 802.3ad
      • IEEE 802.1p
      • IEEE 802.1Q
      • IEEE 802.1w
      • IEEE 802.1s
      • IEEE 802.1x
      • IEEE 802.1AB
      • ITU-T G.823/4
      • ITU-T G.703


      • (1) Contra DB15 (female) connector
      • (2) 10/100/1000Base-T RJ-45 ports
      • (1) 100/1000Base-X SFP slot (empty)
      • (1) RJ-12 console port


      • Width: 8.86″ [225 mm]
      • Depth: 7.87” [200 mm]
      • Height: 1.73” [44 mm]

      Power Input

      • AC Version
        • Bale lock cable clamp
        • Auto-sensing 100VAC-240VAC, 47-63Hz
        • Max consumption 0.2A @ 230VAC
        • Typical Consumption 18 Watts
      • DC Version
        • External presentation -48VDC, 0VDc and GND via external screw down termination
        • Wide input range -18V to -72V
        • Typical consumption 13 Watts


      • Operating: 0°C to +60°C
      • Humidity: 10% to 90% (non-condensing)


      • 5.73 lbs. [2.6 kg]


      • CE Mark
      • EN60950-1:2006+ A11:2009+ A1:2010+ A12:2011
      • EN50121-4:2006, EN61000-3-2:2006+ A1&A2:2009
      • FCC CFR47 Parts15: 107&109, CB Scheme Certified


      • 1 Year

    PB-TDM1-CONTRA Series Resources

    Application Spotlights
    Press Releases
    Case Studies

    PB-TDM1-CONTRA Series Downloads

    Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

    PB-TDM1-CONTRA Series Part Numbers


    (1) DB15 port + (2) 10/100/1000Base-T ports + (1) 100/1000Base-X SFP slot (empty) AC input (serial control cable included)


    (1) DB15 port + (2) 10/100/1000Base-T ports + (1) 100/1000Base-X SFP slot (empty) -48VDC input (serial control cable included)

    Lantronix Part # Name Description Order Now

    Compatible Accessories

    Lantronix Part # Legacy Part # Name Description Order Now
    SFP Modules SFP Modules See Relevant SFP Modules
    PB-RMK-S PB-RMK-S 19″ rack mount kit for PB-TDM1-CONTRA Series