Network Router User Manual

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