11 ISDN-S/T I/O CARD
3021M100-002
11-5
11.2 Dual Digital Voice Compression Card
A Dual Digital Voice Compression (DDVC) Card must be installed with an
ISDN-S/T I/O Card to provide compressed voice capability to the CX950. Th
card can be mounted in any I/O slot but we recommend that it be installed next to
the ISDN-S/T I/O Card.
WARNING:
The DDVC (Dual Digital Voice Compression) Card
cannot coexist
with the following cards in the same CX950 chassis:
- Dual Analog Voice I/O Card (DAV I/O)
- BRI Digital Voice I/O Card (BRI-DV I/O)
- Digital Interface Module (DIM) I/O Card (when used for voice)
The DDVC provides two voice channels that can be software configured for voice
compression at 5.8 or 8.0 Kbps (ACELP II) or 16, 24, 32 or 40 Kbps (G.726), o
64 Kbps (PCM).
NOTE:
Each CX950 chassis can support a
maximum
of three DDVC Cards (6 voice
channels).
The power consumption for the card is 3 Watts (10.3 BTU/hr).
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