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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 17 Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs
Configuration Tasks
Configuring Invert Data
Delays between the terminal equipment (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:
Verifying Invert Data Setting
Use the show running configuration command to verify that invert data was set on the interface:
Router# show running configuration
interface Serial2/0/0
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
!
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 17-5.
Router(config-if)# invert data Inverts the data stream.