IBM SG24-4817-00 manual ATM Ports and Cabling

This soft copy for use by IBM employees only.

Table 20 (Page 2	of 2). Power Budget of the 8285 Expansion Chassis
Device		Watts ( + 5V)	Watts ( + 12V)
ATM 2-Slot Carrier Module		17.5
ATM 4-Port TR/Ethernet Bridge Module		82.0	12.0
ATM WAN Module		18.4
ATM WAN I/O Cards: E3,DS3,OC-3,STM-1		7.9
IBM Multiprotocol Switched Services Server		42.0	1.0
2-slot 8272 ATM/LAN Switch Module		67.5
3-slot 8272 ATM/LAN Switch Module		67.5
Token-Ring	4-Port UTP/STP	11.0
UFCs
	2-Port Fiber	8.0
	1-Port ATM155	25.0
	1-Port RMON	24.0
2-slot 8271 ATM/LAN Switch Module		58.5
3-slot 8271 ATM/LAN Switch Module		58.5
Ethernet	4-Port 10Base-T	5.5
UFCs
	3-Port 10Base-FL	6.7
	1-Port 100Base-Tx	5.7
	1-Port 100Base-Fx	6.0
	1-Port ATM155	25.0

6.1.3 ATM Ports and Cabling

With its expansion, the IBM 8285 offers several physical kind of port connections to handle twisted pair, fibers and coaxial lines. The physical specification of each type of port are as follows:

•UTP/FTP/STP Ports

−Physical Interface: RJ-45

−25 Mbps Cabling Supported and Maximum Distances:

UTP Category 3		100	meters (unshielded twisted pair)
UTP Category 4		150	meters
UTP Cat.5 (100 Ohms)		160	meters
FTP	(100/120 Ohms)	150	meters (foiled twisted pair)
SFTP	(150 Ohms)	150	meters (shielded and foiled twisted pair)
STP (150 Ohms)		300	meters (shielded twisted pair)

−155 Mbps Cabling supported and Maximum Distances:

UTP Cat.5 (100 Ohms) 100 meters

FTP (100/120 Ohms) 100 meters (foiled twisted pair)

SFTP (100/120 Ohms) 100 meters (shielded and foiled twisted pair)

STP (150 Ohms) 100 meters (shielded twisted pair)

The ports comply with the latest ATM Forum specifications concerning pinouts. Although, the ATM25 cable uses the same number of pins as both

Chapter 6. IBM 8285 Planning and Installing 95