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CTP2000 series voice compression and echo cancellation module
The
CTP2000 compression interface module enables serial data and voice bundles to
be compressed and passed through a CTP2000 device. The voice compression module
is a server module within the CTP2000 device. Any T1 or E1 DS0 or analog
channel on a 4W-E&M, 2W-FXS, or 2W-FXO can use the compression module
features.
The
voice compression module provides the following features:
- A-law to mu-law conversion—Allows you to connect
sites that use a-law companding to sites that use mu-law companding.
- Echo cancellation—Provides a 32-ms end path delay on
each bundle channel. This
feature can eliminate the need for external echo cancellation devices.
- Silence detection—Provides bandwidth savings. Silence suppression
can result in significant bandwidth savings. When silence is detected on the
channel, the network bandwidth used for that channel is reduced drastically
when this attribute is enabled.
- Fax and modem detection—Detects fax and modem tones
and if detected, disables compression and reverts the channel to pulse code
modulation (PCM). Enabling
this feature increases the network bandwidth needed for that channel in the
bundle for the duration of the fax or modem session. However, it succeeds in negotiation and transfer of fax and modem data
at high speeds.
