User Manual

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NOMAD MXU Administration Manual
3:33 PM 02/12/99
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located inside the NOMAD MXU. Phones attached to the local PSTN will be able to receive NOMAD ISU
calls via the NOMAD MXU and IRIDIUM global system.
A call placed from a NOMAD ISU to a person on the local PSTN will require the dual dialing procedure
illustrated in the following steps:
a. The NOMAD ISU caller will dial the Iridium phone number of the NOMAD MXU’s channel one
LBT.
b. When answered by the NOMAD MXU, a tone will indicate to the NOMAD ISU user that he is
required to enter his account number.
c. The account number is then entered by the NOMAD ISU caller.
d. The NOMAD MXU will check the account number to insure the caller is allowed on the NOMAD
system. If the caller is a valid user, the NOMAD MXU will connect the caller to the local PSTN
and the caller will hear a 2
nd
dial tone.
e. The NOMAD ISU caller will then dial the PSTN destination number.
f. The dialed number will be passed through the IRIDIUM constellation, NO<MAD MXU and then
to the local PSTN. The PSTN will ring the destination phone and the call will be completed when
the called party answers.
2.2 NOMAD MXU Configuration Manager (MCM)
2.2.1 MCM Overview
This section describes the NOMAD MXU Configuration Manager (MCM) software package for the
Iridium Nomad program.
The NOMAD MXU devices are configured and monitored by the NOMAD MXU Configuration Manager
(MCM) program. The NOMAD MCM is installed on a PC at an Iridium Gateway site and connects to the
NOMAD MXUs over a modem/phone line connection. It is also possible to directly connect an NOMAD
MXU and a PC running the MCM program by using a null modem cable between serial ports on each
machine. One MCM installation can control a large number of NOMAD MXUs. Each NOMAD MXU
configuration is stored in a file with the extension .mxu.
Each Nomad phone is assigned both a standard Iridium phone number (called an MSISDN) and a unique
seven digit account number. The account number is for keeping track of airtime for each NOMAD ISU.
The account number is created for each MSISDN by the MCM software. The account is then either
programmed into the SIM card of the phone or entered into the phone’s re-dial memory. This account must
be entered after the Iridium phone user dials and connects to the NOMAD MXU.
The NOMAD MCM software is installed on a PC running Microsoft NT 4.0. It presents an interface that
the administrator can use to communicate with the NOMAD MXU for the purpose of enabling service,
monitoring airtime usage and allocating airtime for individual or pooled groups of phones. It also allows
the administrator to retrieve and view airtime usage logs and diagnostic reports.
The software is released in three versions:
• The Administration version described in this document (MCM_Admin.exe).
• A Monitor or "read only" version which is a subset of the Administration version
(MCM_Monitor.exe)
• A Support version, which contains extra functions, used to diagnose or recover from error situations
(MCM_Support.exe).