Cisco Systems (VISM) VISM and VISM-PR Card Physical Characteristics

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Cisco VISM Installation and Configuration Guide

Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004

Chapter1 Overview of the VISM and VISM-PR Cards

VISM and VISM-PR Card Physical Characteristics

VISM cards are configured with the following service types:

•Constant bit rate (CBR)

Note CBR is not supported with a combination of a PXM1 with either an RPM or external

router.

•Variable bit rate real time, VBR (RT)

•VBR non-real time (NRT)

VISM-PR card connections with the RPM-PR card requires the VB R (NRT) 3 service t ype o n t he

PXM1E and PXM45 platforms.

If you are using a VISM-PR card in combination with a PXM1E, PXM45, or RPM-PR card, you must

use the VBR (NRT) 3 selection when adding a connection.

The following connection service types can be configured with VISM 3.0 and higher:

•VBR (RT) 2

•VBR (RT) 3

•VBR (NRT) 2

VISM and VISM-PR Card Physical Characteristics

VISM cards are equipped with the following:

•Eight T1 or E1 ports

•Digital signal processors (DSPs)

•High-level data link control (HDLC) framer

•Broadband interface to the packet network

VISM card architecture provides the following:

•Flexibility that allows the incorporation of new or improved technology as it becomes available.

•Application flexibility that allows VISM to be used in a range of situations that provide

interoperability with a wide variety of equipment types.

•Modularity that allows equipment to be purchased and installed as it is needed for scalability.