Introduction to 2-Wire Systems

When connecting 2-wire equipment the following applies:

• Terminate

  • 2-wire partyline circuits must be terminated once on the line

  • Do not terminate on more than one device in the system

    • Enable/disable the termination. Default setting: Disabled

    • The Station default setting assumes the 2-wire partyline is nulled elsewhere in the system (i.e. at a partyline main station or power supply)

  Line termination is set in the CCM only. To do this, in the CCM navigate to: Hardware > Resources > Physical Ports. See below

• Power

  • 2-wire partyline beltpacks can be powered by the Station 2-wire ports. Quantity of beltpacks and length of cable are variables, dependent on the type of devices and existing cabling

  • To calculate what will work best in your circumstances, see the Encore Partyline Power Calculator, available from the Encore Knowledge Center

    • Enable/disable the partyline power. Default setting: Disabled

    • The Station default setting assumes the 2-wire partyline is powered elsewhere in the system (i.e. using a partyline main station or power supply)

  These functions can be set either in the 2-wire port settings page of the CCM or from the front panel menu on the Station

• Null

  • 2-wire null serves the purpose of isolating audio that goes to the 2-wire partyline from the Station from the audio that comes from the 2-wire partyline to eliminate undesirable echo. The null is trained to the properties of the partyline cabling and equipment connected to the Station and varies depending on the setup

  • Keep the following in mind for nulling:

    • Microphones on the 2-wire partylines should be unlatched

    • RMK before initiating the Null process

    • Ensure the 2-wire partyline is not in use

    • Null again if equipment or cabling is changed on the 2-wire partyline

• Assign

  • 2-wire port may need to be assigned to channels or role keys as appropriate