Allied Telesis CentreCOM GS970M Series - Twisted Pair Ports; Cable Requirements for Non-Poe Ports; Table 1. Twisted Pair Cable Requirements for the Non-Poe Ports

GS9790M Series Switch Installation Guide
25
Twisted pair ports
The number of twisted pair ports supported by each GS970M Series
switch is:
 8 ports: GS970M/10 and GS970M/10PS
 16 ports: GS970M/18 and GS970M/18PS
 24 ports: GS970M/28 and GS970M/28PS
All ports are 10BASE-T, 100BASE-TX, and 1000BASE-T compliant. You
can set the port speeds and duplex modes either automatically with IEEE
802.3u Auto-Negotiation or manually with the management software.
The twisted pair ports feature 8-pin RJ45 connectors. For the port pinouts,
see
“Connectors and port pinouts” on page 88.
The ports have a maximum operating distance of 100 m (328 feet).
The ports feature auto-MDI, which automatically configures the ports as
MDI or MDIX. This feature allows you to use straight-through twisted pair
cables regardless of the wiring configurations of the ports on the end
nodes.
Note
A switch port connected to an end node that is not using Auto-
Negotiation should not use Auto-Negotiation to set the speed and
duplex mode, as a duplex mode mismatch may occur. In this case,
disable Auto-Negotiation and set the port’s speed and duplex mode
manually.
Cable
requirements for
non-PoE ports
Cable requirements for the non-PoE twisted pair ports are in Table 1.
TABLE 1. TWISTED PAIR CABLE REQUIREMENTS FOR THE NON-POE PORTS
Cable type
10
Mbps
100
Mbps
1000
Mbps
Cat 3: Standard TIA/EIA 568-B-compliant
Category 3 shielded or unshielded cabling
with 100 ohm impedance and a frequency
of 16 MHz
Yes Yes
No
Cat 5: Standard TIA/EIA 568-A-compliant
Category 5 shielded or unshielded cabling
with 100 ohm impedance and a frequency
of 100 MHz
Yes Yes
Yes