0x0039 Associated Span and Channel

Used in:
Route Control message

Byte | Description
0, 1 | Tag 0x0039
2, 3 | Length 0x0003
4,5 | Value[0] Logical Span (MSB) Value[1] Logical Span (LSB)
6 | Value[2] Channel

Range of channels provided by T1 or E1 transmission service. A physical span is a group of channels taking up a single physical wire. A logical span is a group of channels taking up less than a single logical wire, or carried over more than one physical wire.
Least Significant Bit