Performance monitoring and test system for a telephone network
First Claim
1. In a telephone network, a method of DS3 signal access, comprising:
- identifying a bit in the DS3 signal;
generating a selected bit; and
substituting the identified bit with the selected bit in the DS3 signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A DS3 level access, monitor and test system for a telephone network. The system provides selective, and hitless, bit overwrite in any of the embedded DS1, DS0 and subrate channels in a DS3 signal. Multiple DS0 and subrate channels can be tested via the asynchronous time slot interchange in conjunction with the recombiner of the present invention. The present invention further includes a lookahead reframer for framing to the DS3 signal. The present invention also includes a facilities data link (FDL) handler for capturing the FDL channel data in every DS1 channel in a DS3 signal. A high speed bit-for-bit compare is interfaced to a protect path to provide 1:1 fault protection in the system of the present invention. Full time performance monitoring on DS1 and DS3 signals is performed by a shared resource. The system of the present invention provides an integrated approach to synchronization measurement and relative synchronization.
48 Citations
29 Claims
-
1. In a telephone network, a method of DS3 signal access, comprising:
-
identifying a bit in the DS3 signal; generating a selected bit; and substituting the identified bit with the selected bit in the DS3 signal. - View Dependent Claims (2, 3, 4, 5, 12)
-
-
6. A method of accessing a plurality of embedded channels in a DS3 signal, the method comprising;
-
extracting at least one of the DS2 channels in the DS3 signal; communicating at least one of the DS0 channels in the DS2 channel into an asynchronous time slot on a bus; and selectively inserting data from the bus into the DS3 signal. - View Dependent Claims (7, 8, 9, 10, 11)
-
-
13. In a telephone network, a method of DS3 signal access, comprising:
-
a first circuit capable of identifying a bit in the DS3 signal; a second circuit capable of generating a selected bit; and a combiner capable of substituting the identified bit with the selected bit in the DS3 signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A system for accessing a plurality of embedded channels in a DS3 signal, the system comprising:
-
a demultiplexer capable of extracting at least one of the DS2 channels in the DS3 signal; an asynchronous time slot interchange capable of communicating at least one of the DS0 channels in the DS2 channel into an asynchronous time slot on a bus; and an insertion circuit capable of selectively inserting data from the bus into the DS3 signal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
-
Specification