Alcatel 060170-10, User Manual, Page: 54 / 430

Voice Switching Daughtercard — Analog
Page 2-20
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Notes
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Analog voice switching daughtercards (VSAs) cannot be
used without either installing an FXS or FXO grand-
daughtercard (or module).
FXO grand-daughtercards cannot be installed as ports 1
and 2 when used with an FXS grand-daughtercard.
FXS and FXO grand-daughtercards are not field
upgradeable.
Calls between channels on the same VSA card use PCM
(Pulse Code Modulation) instead of the H.323 protocol
to process analog calls, and require two DSP channels
to make the calls.
Analog Voice Switching Daughtercard (VSA-FXO-FXO) — Top View
Analog Voice Switching Daughtercard (VSA-FXS-FXO, Mixed) — Top View
Switch
Bus
Analog
Voice Ports
Top View
FXO module
FXO module
Analog
Voice Ports
1
2
3
4
DSP
DSP
Switch
Bus
Top View
FXO module
Analog
Voice Ports
5
6
Analog
Voice Ports
FXS module
1
2
3
4
DSP
DSP