Datatek UTM - Manual (Page 29)

U T M U s e r ' s M a n u a l
01/18/08 29
mechanism. Under normal circumstances, the modtype will be set as a TRKT1. By selecting the
appropriate modtype, the Universal Trunk may be used in any existing installation without a
control computer upgrade.
The transport protocol automatically follows the selection made by the modtype option. Selecting
a value of TRKT1 will select the PQ transport protocol. A value of SWT or CPM will select the
SWT/TIM transport protocol. Finally, a value of SAMSL or TRK64 will select the DDS transport
protocol.
When the Universal Trunk is a replacement trunk for one end of a trunk pair the “trunk modtype”
must match the type of trunk on the other end of the circuit. Except when the far end trunk is a
Trunk-PQ. Here, “trunk modtype” must be set to TRKT1
When the Universal trunk is not a replacement trunk, there is flexibility in the choice of the “trunk
modtype” to be used.
The duplex option selects the type of operation of the trunk. When duplex is off, the trunk
operates in simplex mode. That is, there is a single logical connection between trunk pair ends.
The connection can exist via an IP, FR, ATM, or TDM infrastructure as noted earlier. When the
duplex is on, there are two connections between the trunk pair. The first is (and must be) an IP-
DSU connection as noted in this section. The second is a non IP connection via either the serial
port (V.35 or RS-232) or the internal DSU. Any network type, including Frame Relay and ATM, is
allowed for the second connection. In the duplex mode, a failure of either facility is alarmed, and
the data is automatically switched over to the alternate facility. When the serial port is used, the
carrier signal (DCD) is used to indicate a carrier failure from the external modem. When the
internal DSU is used, a loss of signal is used to determine the carrier failure. Since the master
clock end provides its own signal, the loss of signal is only noted on the recovered clock end of
the DSU connection. Alarms are placed on the console port to be monitored by StarKeeper II
NMS.
5.2.3 LOGIN
Syntax #1: login passwd=<password> (default password is: initial)
Syntax #2: login
This command is a security command required for accessing the bulk of the command set. It is
only available when the user is logged off. The command has two forms, and three modes of
operation.
The first syntax example provides legacy compatibility for operations systems that use that form.
The password must contain between one and seven alphanumeric characters. The typed
password is case sensitive.
In the second example, the password is not provided on the command line. The login command
will then prompt for a password. A password given at the prompt will not be echoed. There is a
timeout of approximately 30 seconds on the password prompt.
If one or more TACACS+ RADIUS Servers are defined, the second form is used to log into the
device. When used, a connection is made to the first available server. Prompts for “Username”
and “Password” are requested. These Usernames and Passwords are administered on the
TACACS+ RADIUS server; and not on the device.