
Part Number and Description
Position
11P3955 6m cable
9 Position to 9 Position
11P3956 15m cable
9 Position to 9 Position
31L7196 15m cable
9 Position to 25 Position
Connect the External Modem
The external modem is used in conjunction with the HMC’s Service Agent and Call
Home features. To properly service your machine, it is important that you configure the
Service Agent feature correctly the first time. For more information about configuring the
modem and the Service Agent feature, see the
IBM Hardware Management Console for
pSeries Installation and Operations Guide.
To connect the external HMC modem, do the following:
1. Connect the modem cable to the external HMC modem (1).
2. Connect the other end of the modem cable to serial port 2.
3. Connect the phone cable line port of the external modem (2).
4. Connect the other end of the phone cable to the analog jack on your wall.
1
Modem Cable Outlet
2
Phone Cable Outlet
Check the Microswitch Settings on the Modem
Check the microswitch settings on the modem. The settings should be as follows:
Switch
Position
Function
1
Up
Force Data Terminal Ready
(DTR)
2
Up
Hardware Flow Control (&E4)
3
Down
Result Codes Enabled
4
Down
Modem Emulation Disabled
5
*Down
Auto Answer Enabled
6
Up
Maximum Throughput Enabled
7
Up
Ready to Send (RTS) Normal
Functions
8
Down
Enable Command Mode
9
Down
Remote Digital Loopback Test
Enabled
Chapter 2. Installing the pSeries 690
23
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