Failsafe configuration for alternative network telephony
View Patent ↗A failsafe configuration for alternative network telephony is disclosed. An indication as to whether an alternative network telephony call processing system is available to process calls from an associated piece of telephone equipment is received automatically and transparently to a user of the telephone equipment. Calls placed from the telephone equipment at a time when the alternative network telephony call processing system is available to process calls are processed via alternative network telephony. Calls placed from the telephone equipment at a time when the alternative network telephony call processing system is not available to process calls are processed via the public switched telephone network (PSTN).
1. A method for providing alternative network telephony, comprising:
receiving an indication as to whether an alternative network telephony call processing system is available to process calls from an associated piece of telephone equipment, the indication being received automatically and transparently to a user of the telephone equipment;
processing via alternative network telephony calls placed from the telephone equipment at a time when the alternative network telephony call processing system is available to process calls; and
processing via the public switched telephone network (PSTN) calls placed from the telephone equipment at a time when the alternative network telephony call processing system is not available to process calls.
2. The method of claim 1 , wherein an indication is received that the alternative network telephony call processing system is not available if the alternative network call processing system loses power.
3. The method of claim 1 , wherein the alternative network telephony call processing system is configured to generate an availability signal indicating that the alternative network call processing system is available, and the method further comprises:
determining that the alternative network call processing system is available if the availability signal is received; and
determining that the alternative network call processing system is not available if the availability signal is not received.
4. The method of claim 1 , further comprising for a call placed at a time when the alternative network call processing system is available:
receiving outgoing audio data at a first local node;
encoding the outgoing audio data at the first local node;
providing the encoded outgoing audio data to local telephone wiring connected to the first local node;
receiving the encoded outgoing audio data at a second local node connected to the local telephone wiring;
decoding the encoded outgoing audio data; and
using alternative network telephony to send the decoded outgoing audio data to a destination;
wherein the alternative network call processing system is configured to decode and process encoded outgoing audio data via alternative network telephony.
5. The method of claim 4 , wherein the encoding comprises frequency encoding.
6. The method of claim 5 , wherein the encoding comprises frequency shifting.
7. The method of claim 5 , wherein the encoding comprises frequency modulation.
8. The method of claim 7 , wherein the encoding comprises using the outgoing audio data to frequency modulate a carrier wave.
9. The method of claim 8 , wherein the carrier wave has a frequency outside the normal frequency range of audio data handled by the alternative network call processing system that has not been encoded.
10. The method of claim 1 , wherein the telephone equipment comprises a telephone handset.
11. The method of claim 1 , wherein the telephone equipment comprises a fax machine.
12. The method of claim 1 , wherein the telephone equipment comprises a computer modem.
13. A system for providing alternative network telephony for a telephone equipment associated with local telephone wiring, comprising:
a first connection to the local telephone wiring;
a second connection to an alternative network, and
a processor configured to complete calls via the alternative network using alternative network telephony including by:
providing, to a connector interposed between the telephone equipment and the local telephone wiring, an indication whether the alternative network call processing system is available, wherein the connector is configured to modify outgoing audio data received from the telephone equipment and provide the modified outgoing audio data to the local telephone wiring if the alternative network call processing system is available;
receiving the modified outgoing audio data via the local telephone wiring;
restoring the modified outgoing audio data to its original form; and
sending the restored outgoing audio data to a destination via alternative network telephony;
wherein the connector is further configured to provide outgoing audio data received from the telephone equipment to the local telephone wiring without modification if the alternative network call processing system is not available and wherein outgoing audio data that has not been modified is passed to the public switched telephone network (PSTN) whereby calls may be completed normally via the PSTN at times when the alternative network telephony call processing system is not available.
14. The system of claim 13 , wherein to modify the outgoing audio data comprises frequency encoding the outgoing audio data.
15. The system of claim 14 , wherein frequency encoding comprises frequency shifting.
16. The system of claim 14 , wherein frequency encoding comprises frequency modulation.
17. The system of claim 16 , wherein frequency encoding comprises using the outgoing audio data to frequency modulate a carrier wave.
18. The system of claim 13 , wherein the telephone equipment comprises one or more of a telephone handset, a fax, and a computer modem.
19. A system for providing alternative network telephony, comprising:
a processor configured to:
receive an indication as to whether an alternative network telephony call processing system is available to process calls from an associated piece of telephone equipment, the indication being received automatically and transparently to a user of the telephone equipment;
process via alternative network telephony calls placed from the telephone equipment at a time when the alternative network telephony call processing system is available to process calls; and
process via the public switched telephone network (PSTN) calls placed from the telephone equipment at a time when the alternative network telephony call processing system is not available to process calls; and
a memory coupled with the processor wherein the memory provides the processor with instructions.
20. A computer program product for providing alternative network telephony, the computer program product being embodied in a computer readable medium and comprising computer instructions for:
receiving an indication as to whether an alternative network telephony call processing system is available to process calls from an associated piece of telephone equipment, the indication being received automatically and transparently to a user of the telephone equipment;
processing via alternative network telephony calls placed from the telephone equipment at a time when the alternative network telephony call processing system is available to process calls; and
processing via the public switched telephone network (PSTN) calls placed from the telephone equipment at a time when the alternative network telephony call processing system is not available to process calls.