Method and system for interleaving and deinterleaving SDH frames

System for interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:

• a section overhead area;
• a pointer area;
• a payload area including the data to be transmitted,
• said transmitter including an interleaver module for interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver, and said receiver including a deinterleaver module for deinterleaving said interleaved frame using a law that is reciprocal of said interleaving law.

Transmitter for a system for interleaving and deinterleaving STM-1 and STM-N SDH frame pointers transmitted between a transmitter and a receiver, each frame comprising three areas:

• a section overhead area;
• a pointer area;
• a payload area including the data to be transmitted,
• said transmitter including an interleaver module for interleaving the bits of said pointer area and those of said payload area according to an interleaving law retaining the position modulo 24 in the interleaved bits, said interleaving producing an interleaved frame transmitted to said receiver, and said receiver including a deinterleaver module for deinterleaving said interleaved frame using a law that is reciprocal of said interleaving law.