NEC Univerge SV8100 System Hardware Manual page 370

UNIVERGE SV8100
10.5
The PSA-L UNIT (Power Save Adapter), an optional adapter for the ITL/DTL
Terminals, is used with IP telephones to make or receive a call using the Public
Switched Telephone Network (PSTN) when a call cannot be made or received
using the Local Area Network (LAN). When a power failure occurs, the IP telephone
is automatically switched to the PSTN. When power is restored, the IP telephone
restarts and connects to the network unless a conversation is in progress on PSTN.
The PSTN call must be completed by going on-hook before the connection to the
LAN is restored. The unit features:
 Survivability in case of power failure or network congestion
 Support on modular terminals (ITL/DTL)
 PSTN Type = analog PSTN
 Dial method . MF/DP (10pps)
System Hardware Manual
CHUYÊN CUNG CẤP TỔNG ĐÀI NEC
PSA-L (BK) UNIT / PSA-L (WH) UNIT
Figure 6-33 PSA-L UNIT
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