7.Upon successful SIP registration, the REG LED indicator will be ON and the LCD will show registered <phone number>.
Callings:
8.Pick up the phone, and you should hear a dial tone for VoIP mode.
9.Press 1688# or 1688 to call the party with the registered SIP phone number 1688. Note that # key will dial out the number immediately. Dialling without # will not dial out until the auto dial timer (default=5 seconds) elapsed.
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