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# Configuring Bundle Pairs for TDM/TDC Operation (CTPView)

The TDM/TDC feature is supported on CTP2000 serial interfaces. TDM/TDC operation requires both a low-speed bundle and a high-speed bundle. This topic describes how to configure the high-speed and low-speed bundle port options when used for TDM/TDC bundles using CTPView.

1. Configuring the High-Speed CTP Bundle for TDM/TDC Operation (CTPView)
2. Configuring the Low-Speed CTP Bundle for TDM/TDC Operation (CTPView)

## Configuring the High-Speed CTP Bundle for TDM/TDC Operation (CTPView)

Configure the high-speed bundle on an even-numbered port.

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.
- Disable the bundle before you modify the bundle options.

To configure a high-speed CTP bundle for TDM/TDC operation 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. You must configure the bundle on an even-numbered port.
4. Under Port Options, configure the parameters described in Table 1, and click Click to Submit Bundle AND Port Changes.
5. Configure the rest of the bundle as you normally would.

Table 1: High-Speed CTP Bundle Parameters for TDM/TDC Operation in CTPView

Field | Function | Your Action
--- | --- | ---
Serial Encoding | Specifies the serial encoding method used on this bundle. | Specify TDM as the encoding method.
TDM Function | Specifies the TDM function. Currently only one TDM function issupported. This option is available only on even numbered ports on a CTP2000 serial module, and when the serial encoding parameter is set to TDM. | Select the following: TDC Clk/Data on port N+1—Oversamples the incoming clock (TT) and data (SD) from the adjacent port above this one (N+1) at this port’s clock rate, and embeds it in its data. At the remote end of the network, the embedded circuit data is recovered and exits the node on port N+1 as RT and RD outputs. Because of the direct interleaving of two ports’ data, TDC is maintained between these two ports with an accuracy of one bit time at this port’s data rate.
TDM Rate | Specifies the number of bits out of 32 that are used for the TDM function (and not for local serial port data). Keep in mind the following when you configure the TDM rate: If the rate is too low, the bundle may not carry the low-speed data because of insufficient oversampling. If the rate is too high, the low-speed circuit will still run, but will likely use more bandwidth than necessary. You may want to configure a higher rate to increase the TDM rate to reduce jitter on the the low-speed clock and data signals. | Select one: 16 8 4 2

## Configuring the Low-Speed CTP Bundle for TDM/TDC Operation (CTPView)

Configure the low-speed bundle on an odd-numbered port that is one port higher than the corresponding high-speed bundle.

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.
- Disable the bundle before you modify the bundle options.

To configure the low-speed CTP bundle 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.
4. Set the Clock Cfg to TDM/TDC Interleaved Slow Port.

| Note: Do not configure any other bundle parameters.

#### Published: 2011-01-09

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