WELLTECH ATA-171 - V1.4 User Manual page 18

(1-12) If there is nothing need to change, please click the Save Change Item in the left
side, then click the Save button. The change you made will save into the system
and the system will Reboot automatically.
3.6.3 Port Settings: you can setup the SIP and RTP port number in this page. Each ISP provider
will have different SIP/RTPport setting, please refer to the ISP to setup the port number
correctly. When you finished the setting, please click the Submit button. If there is nothing
need to change, please click the Save Change Item in the left side, then click the Save
button. The change you made will save into the system and the system will Reboot
automatically.
ATA-171/172/171P (ATA-S1/S2/P)
Figure 18. Service Domain Setting
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User's Guide