Cisco Systems 7304 manual Configuring Invert Data, Configuring the Trace Trail Buffer, 13-15

Chapter 13 Configuring the 2-Port and 4-Port T3/E3 SPAs

Configuration Tasks

Configuring Invert Data

Delays between the TE clock and data transmission indicate that the transmit clock signal might not be appropriate for the interface rate and length of cable being used. Different ends of the wire may have variances that differ slightly. Invert the clock signal to compensate for these factors. To configure invert data, use the following commands:

Command	Purpose
Router# configure terminal	Enters global configuration mode.
Router(config)# interface serial slot/subslot/port	Selects the interface to configure and enters
	interface configuration mode.
	• slot/subslot/port— Specifies the location of the
	interface. See the: “Specifying the Interface
	Address on a SPA” section on page 13-5
Router(config-if)# invert {data}	Inverts the data.
	• data—Invert the data stream.

Verify Invert Data Setting

Use the show running configuration command to verify that invert data was set on the interface:

router# show running configuration

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interface Serial6/0/0

ip address 51.1.1.1 255.255.255.0 logging event link-status

dsu bandwidth 44210 framing c-bit cablelength 10 clock source internal

invert data

mdl string eic tst mdl string lic 67

mdl string generator test mdl transmit path

mdl transmit test-signal no cdp enable

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Configuring the Trace Trail Buffer

Configure TTB to send messages to the remote device. The TTB messages check for the continued presence of the transmitter. To configure TTB, use the following commands:

	Cisco 7304 Router Modular Services Card and Shared Port Adapter Software Configuration Guide
OL-4807-02		13-15