Welltech VoIP ATA series V.2.1 - Manual (Page 142)

ATA-171/172/171P/171M/171+/172+
User’s Guide
(Figure 1)
Step3: Put Phone_List.dat and all update file (e.g.: VP3100_612050.gz &
dsp.ds)，in [TFTP Server] indicates path (See Fugire 2).
(Figure 2)
Step4: Start TFTP Server (See Fugire 3).
(Figure 3)