Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)

138 Chapter7
Programming for PAD, DTC Telnet, Telnet/iX Server, and VT Devices
DTC Telnet Access to MPE/iX Systems
DTC Telnet Access to MPE/iX Systems
If your network is managed by the OpenView DTC Manager, and at
least one of the DTCs on the LAN are equipped with a Telnet Access
Card, the programs you write may be used to control devices connected
to the DTC via a Telnet connection to an HP 9000 or other ARPA
machine. Collectively, these devices are called DTC Telnet devices. The
Telnet Access Card receives asynchronous character streams over the
LAN from an ARPA machine.
What’s Included
This section includes information on:
• The hardware requirements for DTC Telnet support.
• The network configuration requirements for DTC Telnet support.
• Limits and restrictions that apply to DTC Telnet-connected devices.
Hardware Requirements
DTC Telnet access is provided to MPE/iX networks through a Telnet
Access Card mounted in the DTC or with the Telnet Express Box. An
access card takes the place of a terminal connect card in one of the DTC
slots for DTC 48 and DTC 72MX (the Telnet card cannot be in slot 0 for
DTC 48). The Telnet card cannot coexist with an X.25 Network Access
Card in the DTC 48. See DTC Planning Guide for more information on
the DTC hardware.
Both the DTC and the MPE/iX system accessing it must be connected to
a LAN. There must also be a network management workstation on the
LAN running the OpenView DTC Manager software that controls all
DTC network operations.
Network configuration Requirements
MPE/iX host names and IP addresses that can use the DTC Telnet
support facility is configured through the OpenView DTC Manager.
DTC Telnet support information for each MPE/iX host system must be
supplied via the NMMGR configuration software. Also, you must
configure a sufficient number of non-nailed TIO ports.
DTC Telent Configuration Values. DTC Telnet support for the
network is configured using both the OpenView DTC Manager software
on the network management workstation and the NMMGR
configuration software on the host.
DTC Telnet support parameters for each MPE/iX host system that will
allow device connections via DTC Telnet must be defined in the
NMMGR configuration, along with the device profiles to be associated