aculab Prosody X PCI Express R1 Card, Руководство по установке

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Prosody X PCI Express R1 Card – Installation Guide
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Echo cancellation
1.4.2 Tone generation and detection
• DTMF detection
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Call progress tone recognition
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Universal tone generation and recognition (user programmable)
• Fax support
1.4.3 Matrix conferencing with echo suppression and noise gating
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Matrix conferencing
• Many to one conferencing and one to many broadcasting
• Speaker tracking
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Gain control and noise/tone suppression of conference inputs
• Echo cancellation
1.5 Speech and data paths
Speech or data associated with telephone calls may be switched without modification
to other cards or on-board modules (DSPs) for processing, for example, speech
processing can be performed on the card by the media processing DSPs.
The card maintains bit integrity within timeslots between TDM interfaces on the card
and also via the H.100 expansion interface.
There are various types of multi-channel path provided by the card, as follows:-
1. E1 trunks –2.048Mbit systems or ISDN
T1 trunks - 1.554Mbit T1 systems or T1 PRI
2. RTP Voice over IP Ethernet interface
3. Host storage via the PCI Express bus – bi-directional for record and playback,
channel count is dependent on compression and host capabilities
4. The H.100 CT expansion bus
Any one 'source' of speech or data may be distributed to a number of separate 'sinks',
but it is not possible via switching on the card alone for more than one source to feed
a single sink. This conferencing function is sometimes required to combine separate
speech sources and can be performed on board with the use of the on-board media
DSP resources.
Full details on the switching of calls using the Prosody X PCI Express card are
available in a separate publication
‘Aculab Switch Control API Guide’ which can be
downloaded from the support area of the Aculab company web site at
www.aculab.com .
1.6 Network Connection
The Prosody X PCI Express card connects to either E1/T1 digital telephony networks
or Ethernet LAN or both, depending on the application. Each E1/T1 trunk connection
is software configurable for either E1 or T1 operation.
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