Ericsson LBI-39055 manual ∙ Modem Options, Remote Console Interconnections Via a 4-Wire Modem

LBI-39055

RS422x-x board configuration is:

∙ Modem Options

Address Switches A3-A9

Address Switches A3-A9

Interrupt Jumper

LD GND Jumper

LD Jumper

DX Jumper

SX Jumper

HDX Jumper

FDX Jumper

SLOT 8 Jumper -BIAS and +BIAS

All On (RS422AT-P)

All Off (RS422I-P)

IN4

In

In

In

Out

Out

In

Out (RS422AT-P) Out (RS422I-P)

DCE Rate = 9600

Originate/Answer = Originate (CEC/IMC modem)

Originate/Answer = Answer (C3 Maestro modem)

V.32 Fast Train = Enabled

Auto Retrain = Enabled

Internal/External Clock = Internal

Dial-Up/Leased Line = Leased

2-Wire/4-Wire = 4 Wire

TX Level = (as required; use -15 dBm if line loss is 0 dB)

Dial Backup = Manual

Loop Back Time = 15 minutes

Configuration for the 3PXOCC1A board is:

Address Switches (S1)			All Off
Interrupt Jumper			IRQ4
Jumpers	JP12 −	JP15	Upper Position
Jumpers	JP16 −	JP17	Lower Position

If any other RS-422 plug-in serial board is used the following board configuration must be used:

COM Port	COM1
Port Address	3F8
Interrupt	IRQ4

See Figure 8A or the manufacturer's documentation for COM port connector pin-out details. Interconnect the

control data connections between the PC and the appropriate CEC/IMC Data Concentrator Card as required. Shielded pairs are recommended.

Remote Console Interconnections Via A 4-Wire Modem

When the C3 Maestro is installed at a remote location from the CEC/IMC, serial control data must be routed via RS-232 connections and 4-wire modems. Since the C3 Maestro requires a dedicated or continuous serial link (non- dial-up), a 4-wire leased line (or equivalent) meeting 3002 data grade specifications must be employed between the CEC/IMC and the C3 Maestro in a remote console installation.

Figure 8B shows typical control data interconnections for a remote console installation using RS-232 connections and full-duplex 4-wire modems. At the CEC/IMC Data Concentrator Card, RS-232 connections are made at J13, not J12. Observe all notes listed in the figure if wiring an installation of this type. Recommended modem settings are:

	Dial Line = RJ11
	Line Current Disconnect = Long
	Long Space Disconnect = Enabled
	V.22 Guard Tone = Disabled
∙	MNP Options
	MNP Protocol = Enabled
	Auto Fallback = Enabled (or Normal)
	Flow Control = CTS Only
	XON/XOFF Pass Through = Enabled
	Data Compression = Disabled
	Inactivity Timer = Off
	Break Control = 5
∙	DTE Options
	Synchronous/Asynchronous Data = Asynchronous
	DTE Rate = 9600
	Character Length = 8 Bits
	Parity = None
	Commanded Dialer = Asynchronous
	AT Command Set = Disabled
	DTR Control = Disabled
	DSR = Forced High
	DCD = Normal
	CTS = Forced High
	DTE Fallback = Disabled
	Options = Retained At Disconnect

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