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Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter 5 CLI Commands
cnfclksrc
cnfclksrc
To configure the PXM1, PXM1E, PXM45, VISM, or VISM-PR card clock source, use the cnfclksrc
command in the VoIP switching/trunking, switched AAL2 PVC, and AAL2 trunking operating modes.
cnfclksrc slot-num.port-num clk-type
Syntax Description
Command Modes VoIP switching/trunking, switched AAL2 PVC, and AAL2 trunking
Usage Guidelines Specify the cnfclksrc command argument values according to the following rules:
• To configure any line except for line 1 of a VISM card, you must use a VISM-PR card in
combination with a PXM1E or PXM45 in your MGX 8000 Series switch chassis.
• If the clock source is the external BITS clock (a T1 or E1 port on the PXM back card), specify the
configuration as:
cnfclksrc 7.35 p
Note Type 7 for the slot number regardless of the PXM card’s location in the chassis. Type 35
for the port number—the BITS port is always port 35.
• If the clock source is an external signal on one of the PXM OC3 ports, specify the configuration as:
cnfclksrc 7.n p
Note Type 7 for the slot number regardless of the PXM card’s location in the chassis. The n
port parameter value is the OC3 port number in the range 1 to 4.
slot-num.port-num The chassis PXM card slot number and port number for which you want to
configure the clocking source.
The slot-num can be one of the following values:
• 7
• 8
The port-num can be in the range from 1 to n, as appropriate for the physical
installation.
Note Ensure that you type the period with no spaces on either side, between
the slot-num argument value and the port-num argument value.
clk-type Clock type. It can be one of the following values:
• P = Primary
• S = Secondary
• N = Null. No external clocking source; use the PXM card’s internal
crystal.