A TP1 line consists out of maximum 4 TP1 segments.
In case more than one segment is required:
- one line repeater per extra segment is required
- one TP1 choke per extra segment is required
Couplers vs. (regular) devices
In order the calculate the line capacity for devices, the capacity taken by couplers and repeaters needs to be taken into account.
TP1-64 vs. TP1-256 devices
Since November 2017 also TP1-256 devices can be used within a TP1 segment, i.e. if a TP1 segment consists out of TP1-256 devices then no repeaters are required in order to reach the maximum capacity of a line.
Example 1 - only use TP1-64 devices:
To set up such a full ranged TP1 line, its first TP1 line segment need to be connected to 3 additional TP1 line segments. The 3 additional TP1 line segments are connected to the first TP1 line segment via 3 TP1/TP1 couplers. The primary side of all 3 TP1/TP1 couplers need to be connected to the first TP1 line segment. This mean that the 3 additional TP1 line segments are put in parallel, it is not allowed to put them in cascade.
Maximum capacity: segment 1 + segment 2 + segment 3 + segment 4
The capacity taken by the 3 TP1/TP1 couplers from the line (primary side + secondary side) is 3 * 2 = 6 devices.
This brings the maximum capacity of such a TP1 line to: (4 x 64) - 6 = 250 devices.
Example 2 - only use TP1-256 devices:
To set up such a full ranged TP1 line, only one TP1 line is required.
Maximum capacity: segment 1
No capacity is taken by TP1/TP1 couplers.
This brings the maximum capacity of such a TP1 line to: 256 devices.