3. Cabling
3-8
March 2001
8820-A2-GN20-30
Connecting to a Modem for Remote Management
Before connecting the Hotwire 8820 GranDSLAM to a standard AT dial-up modem,
configure the modem with the following settings:
Set the modem for auto answer. For example, ATS0=1.
Turn off character echo. For example, ATE0.
Enable result codes in originate mode only. For example, ATQ2.
Set the modem to ignore Data Terminal Ready (DTR). For example, AT&D0.
Procedure
To connect the Hotwire 8820 GranDSLAM to a dial-up modem:
1. Plug a serial cable into the SERIAL MCP port of the chassis.
2. Dress the cable to the right and through the cable retainer.
3. Plug the other end of the cable into your modem’s serial port using a DB25
adapter and a Null Modem.
Hot Insertion or Removal of the SIM
If the port-card Ethernet interfaces are not being used, it is possible to remove the
SIM without disrupting user data. However, if the user terminal (console) or
10BaseT management interface is connected, the management interface of the
GranDSLAM could be interrupted. Also, all MAC addresses would be redefined by
the new SIM.
SERIAL
SCM
CLOCK
A
ALARM
2
4
6
8
10
12
14
16
18
1
3
5
7
9
11
13
15
17
LAN SLOT
B
CLOCK
B
A
SERIAL
MCP
AC
ALARM
99-16563
Serial MCP Port
Dial-up
Modem
DB25
Adapter
Null
Modem