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Cisco IOS Release 12.1(2)T
Configuring Cisco MC3810 Series Concentrators
to Use High-Performance Compression Modules
This document describes feature changes introduced in Cisco IOS Release 12.0(7)XK and supported in
Cisco IOS Release 12.1(2)T and later for Cisco MC3810 series concentrators that contain
high-performance voice compression modules (HCMs).
This document includes the following sections:
•
“Feature Overview” on page 1
•
“Supported Platforms” on page 2
•
“Supported Standards, MIBs, and RFCs” on page 3
•
“Prerequisites” on page 3
•
“Configuration Tasks” on page 3
•
“Command Reference” on page 7
Feature Overview
High-performance voice compression modules (HCMs) provide voice compression according to the
voice compression coding algorithm (codec) specified when the Cisco MC3810 is configured. Table 1
shows the number of voice channels each type of compression module can support.
Table 1
Voice Compression Module Application Information
Type
Codec Packaging Complexity (see Table 2)
Voice Channels
per HCM
HCM2
High complexity (
codec complexity
set to
high
)
4
Medium complexity (
codec complexity
set to
medium
)
8
HCM6
High complexity (
codec complexity
set to
high
)
12
Medium complexity (
codec complexity
set to
medium
)
24
