Long range handshaking communication system for multiple xDSL

1. A method for Digital Subscriber Line (DSL) handshaking, the method comprises:

transmitting, by a remote DSL transceiver, first signals containing even numbered carriers for a predetermined period of time to initiate the DSL handshaking to produce R-ETONES-REQ, wherein the first signals comprise a plurality of even numbered carriers eight through thirty and include periodic phase reversal;

detecting, by a central office DSL transceiver, the R-ETONES-REQ to produce detected R-ETONES-REQ;

determining, by the central office DSL transceiver, alignment of a hyperframe in accordance with a Time Compression Multiplexing-Integrated Service Digital Network (TCM-ISDN) Timing Reference (TTR);

transmitting, by the central office DSL transceiver, first response signals containing odd numbered carriers in accordance with the alignment of the hyperframe to produce C-TONES-TTR, wherein the first response signals comprise odd numbered carriers five through thirty-one and include periodic phase reversal;

acquiring, by the remote DSL transceiver, TTR synchronization in accordance with the C-TONES-TTR;

upon acquiring TTR synchronization, transmitting, by the remote DSL transceiver, second signals containing even numbered carriers to produce R-TONE-TTR;

in response to the R-TONE-TTR, transmitting, by the central office DSL transceiver, second response signals containing odd numbered carriers to produce C-GALF 1 -TTR;

in response to the C-GALF 1 -TTR, transmitting, by the remote DSL transceiver, third signals containing even numbered carriers to produce R-FLAG 1 -TTR; and

in response to the R-FLAG 1 -TTR, transmitting, by the central office DSL transceiver, third response signals containing odd numbered carriers to produce C-FLAG 1 .

2. The method of claim 1 , wherein the first signals comprise even numbered carriers eight through thirty less, carriers twelve and fourteen.

3. The method of claim 1 further comprises:

subsequent to transmitting the first signals, transmitting, by the remote DSL transceiver, additional first signals from one or more signaling families to produce R-TONES-REQ.

4. The method of claim 1 , wherein the first response signals comprises odd numbered carriers five through thirty-one, less carriers seven and nine.

5. The method of claim 1 , wherein the acquiring, by the remote DSL transceiver, TTR synchronization further comprises:

continue transmitting, by the remote DSL transceiver, the R-ETONES-REQ until the TTR synchronization is acquired.

6. The method of claim 1 , wherein the second signals comprises even numbered carriers eight through thirty, less carriers twelve and fourteen.

7. The method of claim 1 , wherein the second response signals comprises odd numbered carriers five through thirty-one, less carriers seven and nine.

8. A method for Digital Subscriber Line (DSL) handshaking, the method comprises:

transmitting, by a remote DSL transceiver, first signals for a predetermined period of time to initiate the DSL handshaking to produce R-ETONES-REQ, wherein the first signals comprise a plurality of even numbered carriers eight through thirty less, carriers twelve and fourteen and include periodic phase reversal;

detecting, by a central office DSL transceiver, the R-ETONES-REQ to produce detected R-ETONES-REQ;

determining, by the central office DSL transceiver, alignment of a hyperframe in accordance with a Time Compression Multiplexing-Integrated Service Digital Network (TCM-ISDN) Timing Reference (TTR);

transmitting, by the central office DSL transceiver, first response signals in accordance with the alignment of the hyperframe to produce C-TONES-TTR, wherein the first response signals comprise a plurality of odd numbered carriers and include periodic phase reversal;

acquiring, by the remote DSL transceiver, TTR synchronization in accordance with the C-TONES-TTR;

upon acquiring TTR synchronization, transmitting, by the remote DSL transceiver, second signals to produce R-TONE-TTR, wherein the second signals comprise a plurality of even numbered carriers and include periodic phase reversal;

in response to the R-TONE-TTR, transmitting, by the central office DSL transceiver, second response signals to produce C-GALF 1 -TTR, wherein the second response signals comprise a plurality of odd numbered carriers and include periodic phase reversal;

in response to the C-GALF 1 -TTR, transmitting, by the remote DSL transceiver, third signals containing even numbered carriers to produce R-FLAG 1 -TTR; and

in response to the R-FLAG 1 -TTR, transmitting, by the central office DSL transceiver, third response signals containing odd numbered carriers to produce C-FLAG 1 .

9. The method of claim 8 further comprises:

subsequent to transmitting the first signals, transmitting, by the remote DSL transceiver, additional first signals from one or more signaling families to produce R-TONES-REQ.

10. The method of claim 9 , wherein the first response signals comprises odd numbered carriers five through thirty-one, less carriers seven and nine.

11. The method of claim 10 , wherein the acquiring, by the remote DSL transceiver, TTR synchronization further comprises:

continue transmitting, by the remote DSL transceiver, the R-ETONES-REQ until the TTR synchronization is acquired.

12. The method of claim 11 , wherein the second signals comprises even numbered carriers eight through thirty, less carriers twelve and fourteen.

13. The method of claim 12 , wherein the second response signals comprises odd numbered carriers five through thirty-one, less carriers seven and nine.