B.1 Gigabit Ethernet Ports

The server has four autonegotiating 10/100/1000BASE-T Gigabit Ethernet system domain ports. All four Ethernet ports use a standard RJ-45 connector, the transfer rates for which are given in TABLE B-1. FIGURE B-1 shows the pin numbering of the ports. TABLE B-2 describes the pin signals.

**TABLE B-1 Ethernet Connection Transfer Rates**
Connection Type	IEEE Terminology	Transfer Rate
Ethernet	10BASE-T	10 Mbit/sec
Fast Ethernet	100BASE-TX	100 Mbits/sec
Gigabit Ethernet	1000BASE-T	1000 Mbit/sec

FIGURE B-1 Gigabit Ethernet Port Pin Numbering

**TABLE B-2 Gigabit Ethernet Port Signals**
Pin	Signal Description	Pin	Signal Description
1	Transmit/Receive Data 0 +	5	Transmit/Receive Data 2 –
2	Transmit/Receive Data 0 –	6	Transmit/Receive Data 1 –
3	Transmit/Receive Data 1 +	7	Transmit/Receive Data 3 +
4	Transmit/Receive Data 2 +	8	Transmit/Receive Data 3 –

B.2 Network Management Port

The server has one 10BASE-T Ethernet management domain interface, labelled NET MGT.

Caution - If you are planning to use the network management (NET MGT) port, you must use a shielded Ethernet cable to maintain your server’s NEBS compliance. The cable’s shield must be grounded at both ends.

FIGURE B-2 Network Management Port Pin Numbering

Figure showing the network management port.

**TABLE B-3 Network Management Connector Signals**
Pin	Signal Description	Pin	Signal Description
1	Transmit Data +	5	Common Mode Termination
2	Transmit Data –	6	Receive Data –
3	Receive Data +	7	Common Mode Termination
4	Common Mode Termination	8	Common Mode Termination

B.3 Serial Ports

The server has two serial ports, labeled SERIAL MGT and TTYA. TABLE B-4 lists the default serial connection settings for both serial ports.

**TABLE B-4 Default Serial Connection Settings**
Parameter	Setting
Connector	SERIAL MGT or l0l0l
Rate	9600 baud
Parity	None
Stop bits	1
Data bits	8

B.3.1 Serial Management Port

The serial management connector (labeled SER MGT) is an RJ-45 connector that can be accessed from the rear panel. This port is the default connection to the server. Use this port only for server management.

Caution - You must use a shielded Ethernet cable to maintain your server’s NEBS compliance. The cable’s shield must be grounded at both ends.

FIGURE B-3 shows the pin numbering of the serial management port. TABLE B-5 describes the pin signals.

FIGURE B-3 Serial Management Port Pin Numbering

Figure showing the serial management port.

**TABLE B-5 Serial Management RJ-45 Connector Signals**
Pin	Signal Description	Pin	Signal Description
1	Request to Send	5	Ground
2	Data Terminal Ready	6	Receive Data
3	Transmit Data	7	Data Set Ready
4	Ground	8	Clear to Send

If you need to connect to the SERIAL MGT port using a cable with either a DB-9 or a DB-25 connector, use a supplied adapter to perform the crossovers given for each connector. The supplied RJ-45 to DB-9 and RJ-45 to DB-25 adapters are wired as described in TABLE B-6 and TABLE B-7.

B.3.1.1 RJ-45 to DB-9 Adapter Crossovers

**TABLE B-6 RJ-45 to DB-9 Adapter Crossovers**
Serial Port (RJ-45 Connector)		DB-9 Adapter
Pin	Signal Description	Pin	Signal Description
1	RTS	8	CTS
2	DTR	6	DSR
3	TXD	2	RXD
4	Signal Ground	5	Signal Ground
5	Signal Ground	5	Signal Ground
6	RXD	3	TXD
7	DSR	4	DTR
8	CTS	7	RTS

B.3.1.2 RJ-45 to DB-25 Adapter Crossovers

**TABLE B-7 RJ-45 to DB-25 Adapter Crossovers**
Serial Port (RJ-45 Connector)		DB-25 Adapter
Pin	Signal Description	Pin	Signal Description
1	RTS	5	CTS
2	DTR	6	DSR
3	TXD	3	RXD
4	Signal Ground	7	Signal Ground
5	Signal Ground	7	Signal Ground
6	RXD	2	TXD
7	DSR	20	DTR
8	CTS	4	RTS

B.3.2 Serial Port TTYA

The port labeled TTYA accepts a DB-9 connector. Use this port for general purpose serial data transfers. FIGURE B-4 shows the pin numbering of the serial port. TABLE B-8 describes the pin signals.

FIGURE B-4 Serial Port (TTYA) Pin Numbering

**TABLE B-8 Serial Port (TTYA) Connector Signals**
Pin	Signal Description	Pin	Signal Description
1	Data Carrier Detect	6	Data Set Ready
2	Receive Data	7	Request to Send
3	Transmit Data	8	Clear to Send
4	Data Terminal Ready	9	Ring Indicate
5	Ground

B.4 Alarm Port

The alarm port on the alarm rear transition module uses a standard DB-15 connector. In a telecommunications environment, use this port to connect to the central office alarming system. FIGURE B-5 shows the pin numbering of the alarm port. TABLE B-9 describes the pin signals.

Note - The alarm port relay contacts are rated for 100V 0.2A maximum.

FIGURE B-5 Alarm Port Pin Numbering

**TABLE B-9 Alarm Connector Signals**
Pin	Service	Pin	Service
1	NC	9	ALARM1_NC
2	NC	10	ALARM1_COM
3	NC	11	ALARM2_NO
4	NC	12	ALARM2_NC
5	ALARM0_NO	13	ALARM2_COM
6	ALARM0_NC	14	ALARM3_NO
7	ALARM0_COM	15	ALARM3_COM
8	ALARM1_NO	CHASSIS	FRAME GND

B.5 USB Ports

The server has two USB ports for attaching supported USB 1.1 compliant devices. FIGURE B-6 shows the pin numbering of the USB ports. TABLE B-10 describes the pin signals.

FIGURE B-6 USB Ports Pin Numbering

**TABLE B-10 USB Connector Pin Signals**
Pin	Signal Description
1	+5 V
2	DAT-
3	DAT+
4	Ground

Signal Pinouts