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    Configuring Serial Port Parameters for CESoPSN Bundles (CTPView)

    This topic describes how to configure port parameters for serial interfaces on CTP150 devices.

    Before you begin:

    • Log in to the CTPView software at least at the Net_Admin level.
    • Connect the CTPView server to the CTP device for which you want to configure bundles.

    To configure serial port parameters using CTPView:

    1. In the side pane, select Bundle > Configuration.
    2. Run your mouse over the Display and Select an Existing Bundle bar.
    3. In the table of bundles, select the bundle that you want to modify. To create a new CESoPSN bundle, run your mouse over the Open Add Bundles Display bar, select a serial port, and click CESoPSN.
    4. Under Port Options, configure the parameters described in Table 1.
    5. Click Click to Submit Bundle AND Port Changes.

    Table 1: CESoPSN Bundle Serial Port Parameter Settings in CTPView

    FieldFunctionYour Action

    Port Description

    Specifies a description for the port.

    Enter a description of up to 62 alphanumeric characters. Do not use the following characters:

    ( ; ' " ) ]

    I/F Mode

    Specifies that the interface is connected to a data communication equipment (DCE) device or to a data terminal equipment (DTE) device.

    Select one:

    • DCE—The interface is connected to a DCE device.
    • DTE—The interface is connected to a DTE device.

    Serial Encoding

    Specifies the serial encoding method used on this bundle. CESoPSN bundles on serial interfaces only support NRZ encoding.

    Select NRZ (nonreturn to zero line encoding).

    I/F Type

    Specifies the electrical standard used on the serial interface.

    Select one:

    • EIA-530
    • EIA-530A
    • RS-232
    • V-35
    • OFF—Do not set the interface type to OFF.

    Port Speed

    Specifies the speed of the port. In networks without bandwidth constraints, we recommend a multiple of 64.

    Enter a number from 64.00 through 2048.00 kHz.

    Clock Cfg

    Specifies the clocking method.

    You can specify the following clocking methods for NRZ with DCE mode specified:

    • Cfg Rate - Int Clk—Configured rate without external TX clock (TT). The CTP device synthesizes the rate that is used on the ST and RT outputs to the attached device. The ST is used to sample Send Data from the attached DTE. The clock is created by the CTP DDS circuitry and logic. This option is commonly used on circuits that are less than 1 Mbps.
    • Cfg Rate - Ext Clk—Configured rate with external TX clock (TT). The CTP device synthesizes the rate that is used on the ST and RT outputs to the attached device. The clock is created by the DDS circuitry and logic. This option is used to sample Send Data from the attached device. It assumes that the attached device is using ST or clock reference that is traceable to CTP reference. It is typically used for higher data rates (>1 Mbps) and long cables.
    • All Clock - Ext Clk—All clocked with external TX clock (TT). The CTP clock uses the external TT timing from the DTE for all clocking. Ext TT is used to sample Send Data from the attached device, to generate the RT clock, and to clock data into the IP network.
    • Adap Rate - Ext Clk—Adaptive clocking with the external TX clock (TT).
    • Adap Rate - Int Clk—Adaptive clocking with the internal clock.

    Only High TT Checking

    Specifies that the CTP device disqualifies transmit timing (TT) only when it is higher than the port speed.

    When enabled, this setting keeps the port from going to the TtFail state when the incoming user clock fluctuates between 0 and the configured port rate. If the TT rate goes above the configured port rate, the CTP device sends the port to the TtFail state to protect the system from an overspeed TT, which would cause problems for the port, CTP device, or network.

    Select ENABLED or DISABLED.

    Modified: 2014-10-01