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Voip Application Examples
Voip Application Examples
B. ADSL Connections with NAT Router for NRX EVoIP
Example 1:
SIP-to-SIP Calling/Answering
Application:
The SIP-to-SIP calling works when both calling and answering parties are registered to SIP server with given
registered phone numbers. The ADSL connections can be as in either Diagrams A or B. Both parties are
registered to SIP server under NAT router. For Diagram A without NAT router, you may select NAT mode to
enable the embedded NAT router. For Diagram B with external NAT router, you may select Bridge mode to
disable the embedded NAT.
Configuration:
1. Select either "NAT" or "Bridge" in accord with your network in "WAN settings" page,
2. Select "DHCP Client" to automatically get an IP address from NAT router.
3. Remember to click the "Submit" button,
4. Select Active "ON" in the "SIP settings / Service Domain" page,
5. Enter the Register Name, Register Password, Proxy Server, and Outbound Proxy,
6. Select "ON" in the "STUN setting", if Outbound Proxy is NOT available.
7. Upon successful SIP registration, the REG LED indicator will be ON and the LCD will show registered
<phone number>.
Calling:
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. Dialing without # will not dial out until the auto dial timer default=5 seconds)
elapsed.
Example 2
: SIP to Direct IP Calling
Applications:
The application is for the calling party with ADSL connection as in either Diagrams A or B. The calling party is
registered to SIP server with either fixed real IP or private IP under NAT router. The answering party is with
fixed real IP. You may also use the Phone Book to call Direct IP Address.
Configuration:
1. Same as in Example 1.
