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3166-A2-GB20-20
The carrier COM port provides the following functionality:
H
If configured for ASCII, only one ASCII device may be used for the carrier. (If
two COM ports are configured for ASCII, neither will work.)
H
If configured for Mgmt, each device in the carrier can support a Mgmt COM
port; however, each Mgmt COM port must be connected to a different subnet.
To facilitate IP data routing, the device with the closest link to the SNMP
manager or Telnet client should be configured as the IP Bus Master.
H
If configured for either ASCII or Mgmt, the carrier COM port may be
configured to control an external device (e.g., modem, x.25 PAD) through the
use of AT or user-specified commands.
The set of valid characters for control of the carrier external COM port device is
as follows:
H
The numbers: 0 –9
H
The lowercase letters: a–z
H
The uppercase letters: A–Z
H
The space (" ") character
H
The ASCII symbols (in ascending order, based on the ASCII code)
H
The End Of Line (EOL) symbol:
H
The caret (''^") control character is used to select non-printable ASCII
characters. The caret ''^" must be followed by one character which together
form the control sequence.
sequences.
March 1999
Table 3-4
defines all of the available control
SDCP Operation
3-17
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