LevelOne VOI-7100 - Manual (Page 71)

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5.4. PSTN-to-SIP Calling
Applications:
The applications can be for ADSL connections as in both Diagrams A and B.
Both parties are registered to SIP server with either fixed real IP or private IP
under NAT router.
Configurations:
1. Same as in Example 2.
2.
Select “ON” in the “SIP settings / STUN setting” page, if Outbound Proxy
is NOT available.
3.
Select “ON” for the “Auto Answer” and “PIN Code” in Call settings. Set the
Auto Answer Ring Counter, e.g. 3, and the PIN code, e.g. 1234.
4. Make sure the REG LED is ON for a successful SIP registration.
Callings:
5. Call from PSTN line to the IP PHONE FXO number, e.g. 7654321. In a
moment, you should hear a ring back tone, and wait for the IP PHONE to
answer. After 3 rings, the VoIP mode will auto answer with a “dodo” tone
(not dial tone). Press 1234# for PIN code and then you will hear a dial
tone for VoIP mode. Incorrect PIN Code will result in call disconnect. If
PIN code is OFF, there will be not “dodo” tone and the caller may press
SIP number directly.
6. Press 1688# or 1688 to call the party with the registered SIP phone
number 1688. In a moment, you should hear a ring back tone, and wait for
the VoIP called party to answer.