Cisco UBR7246VXR Manual de instalação - Página 23
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Configuring the Clock Card
To continue the Cisco Cable Clock Card installation, you must configure the primary and/or secondary
T1 interfaces. This chapter contains the following sections:
•
•
Minimum Software Requirements
You must have Cisco IOS Release 12.1(1a)T1 or later, and Cisco IOS Release 12.1(2)EC1 or later if you
are configuring the clock card with a Cisco uBR-MC16S or Cisco uBR-MC16E cable interface line card.
If you are using a Cisco uBR-MC28C cable interface line card with the clock card, you must use
Cisco IOS Release 12.1(3a)EC1 or later. If you are using a Cisco uBR-MC28U/X card, you must use
Cisco IOS Release 12.2(15)CX or later.
You can use other cable interface cards, such as the Cisco uBR-MC16C, with the clock card, but these
Note
other cable interfaces will not synchronize their downstream SYNC messages with the external clock
source.
OL-26705-01
Minimum Software Requirements, page 4-1
Configuration and Diagnostic Cisco IOS Commands for the Clock Card, page 4-2
Cisco Cable Clock Card Hardware Installation Guide for the Cisco uBR7246VXR Universal Broadband Router
4
C H A P T E R
4-1