Aastra AXD Installation And Maintenance Manual page 290

• Voice transmission and conversion:
- in digital form, from the UCV card to the analogue sets.
The PCM TSs exchanged with the UCV card are the medium for voice carried over
a tie line.
• in analogue form, from the analogue sets to the UCV card.
AMT/PTD/PBX/0058/4/6/EN
Page 290 01/2011
Installation and Maintenance Manual - Aastra 5000
Description des sous-ensembles