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Home > Support > Technical Documentation > Configuring T1 and E1 Port Parameters for CTP Bundles (CTP Menu)
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Configuring T1 and E1 Port Parameters for CTP Bundles (CTP Menu)

This topic describes how to configure port parameters for T1/E1 interfaces.

Before you begin:

  • Disable the bundle before you modify the bundle options.

To configure port parameters for T1/E1 daughter cards for CTP bundles using the CTP Menu:

  1. From the Main Menu, select 1) Bundle Operations.
  2. Select 1) CTP.
  3. Select a bundle from the list. The bundle port must have a T1/E1 daughter card installed.

    If you select an active bundle, you are prompted to disable the bundle before configuring it.

  4. Select 3) Port Config.
  5. Select 2) Interface.
  6. Select 1) Type, and set the type to Optional Interface: T1/E1.
  7. Follow the onscreen instructions, and configure the options as described in Table 1.

    The options vary depending on whether the bundle is T1 or E1 and whether fractional T1 or E1 is configured.

  8. To configure clocking for the port, select 3) Clock Config, and configure the Clock Config option as described in Table 1.

Table 1: CTP Bundle T1/E1 Port Parameter Settings in the CTP Menu

FieldFunctionYour Action

Port descriptor

Specifies a description for the port.

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

( ; ' " ) ]

Type

Specifies the type of interface.

Select one:

  • T1
  • E1
  • Fractional T1
  • Fractional E1

Option (for T1)

Specifies the T1 encoding method used on this bundle.

Select one:

  • B8ZS
  • AMI

Option (for E1)

For E1 interfaces, configure the termination to work with either coax or RJ-48.

Select one:

  • RJ48
  • COAX

Clock synthesizer

The following clock synthesizer settings are set by the software, and you cannot change them:

  • For T1, the clock synthesizer is set to 1544 KHz.
  • For E1 the clock synthesizer is set to 2048 KHz.
 

Fractional channels

Specifies the number of fractional T1 or E1 channels to transport.

For T1, select a number from 1 through 24.

For E1, select a number from 1 through 31.

Fractional Frame Transport

For fractional T1, enables or disables fractional frame transport.

Select one:

  • y (yes)—Frame Transport—Framing bit is transported along with data, which results in data alignment with the frame.
  • n (no)t—Framing bit is not transported.

CAS support

Specifies the signaling method used for fractional E1.

Select one:

  • n (no)—Common channel signaling (CSS) is used. The common channel carries data messages that convey signaling for the circuits between two devices.
  • y (yes)—Channel associated signaling (CAS) is used. Each traffic channel has a dedicated signaling channel (channel 16).

Clock Config

Specifies the type of clocking for the port.

Select one:

  • CTP is Clock Source—The PBX either returns the clock received from the CTP device, or it returns a clock that is traceable to the same source as the CTP node clock reference. You typically use this configuration when you configure the CTP device with a clock reference input.
  • CTP is Loop Timed—The PBX provides the clock, and the CTP device returns the same clock to the PBX. You typically use this configuration when the PBX has the more accurate clock source. You can configure the far end of the circuit with adaptive clocking to recover this clock if necessary.
  • CTP is Clock Source (Adaptive End)—The PBX returns the clock received from the CTP device, and the CTP device uses the adaptive recovered clock. You typically use this configuration when the CTP device does not have a reference input and the PBX typically requires clock from the distant PBX.

Published: 2011-01-09


 
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