DS-3 Signaling (T-3)

[Stan_imported]

I am looking for information regarding DS-3 signaling.&nbsp;&nbsp;Specifically, what is the format for combining 28 DS-1 (T-1)channels, what are the control characters and how are they distributed throughout the frames.&nbsp;&nbsp;I have search the WEB with no luck.&nbsp;&nbsp;Can anyone help.<br><br>Thanx in advance.<br><br>Stan<br><A HREF="mailto:rt5@mindspring.com">rt5@mindspring.com</A><br><br>