PLANET VIP-156 - Manual (Page 15)

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Device configurations on the ATA:
STEP 1:
Log in SIP proxy Server and create two testing accounts/
password: 1001/123 (for ATA A), and 1002/123 (for ATA B)
for the voice calls.
STEP 2:
Please log in ATA via web browser, browse to the SIP setting
menu and select the Domain Service config menu. In the
setting page, please insert the account/password information
obtained from your service provider, and then the sample
configuration screen is shown below:
STEP 3:
Repeat the same configuration steps on ATA B, and check the
machine registration status, make sure the registrations are
completed.