Billion BiPAC 7401VP User Manual page 84

Phone port will automatically rely to PSTN line when:
- Power Down
- Internet Service Fail, i.e., lost of WAN IP Address
- SIP option is disabled. See VoIP General Setting section.
- Calls match with rule(s) defined in the PSTN Digit Plan.
- SIP service is not accessible. This excludes when:
Attention
PSTN Dial Plan Examples:
1) Dial with Prefix
If you dial 01223 707070, number 01223707070 will be dialed out via FXO to make a regular phone call.
2) Dial without Prefix
If you dial 9102, the number 102 will be dialed out via FXO port to make a regular phone call.
Appendix A: Product Support and Contact Information
User manually disables Registration.
User inserts a wrong authentication username or password.
User dials a wrong SIP number, only and if, the PSTN Auto-Fallback function
is not enabled. See VoIP General Setting / Advanced for information.
VoIP/(802.11g) ADSL2+ Router
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