User manual

www.cooperbussmann.com/wirelessresources
Cooper Bussmann 615M-1 Cellular Data Modem and IP Router Series Manual
71Rev Version 1.0
Term Definition
OMA-DM
OMA Device Management is a device management protocol designed for management of
small mobile devices such as mobile phones, PDAs and palm top computers.
OTA, OTASP
Over-the-air programming (OTA) refers to various methods of distributing new software
updates or configuration settings to devices like cellphones and set-top boxes. In the mobile
content world these include over-the-air service provisioning (OTASP), over-the-air provision-
ing (OTAP) or over-the-air parameter administration (OTAPA), or provisioning handsets with
the necessary settings with which to access services.
PDP
The packet data protocol (PDP) context is a data structure present on both the serving GPRS
support node and the gateway GPRS support node which contains the subscriber’s session
information when the subscriber has an active session.
PLC
A Programmable Logic Controller (PLC) is a digital computer used for automation of electro-
mechanical processes, such as control of machinery on factory assembly lines, amusement
rides, or light fixtures.
PPP
The Point-to-Point Protocol (PPP) is a data link protocol commonly used in establishing a
direct connection between two networking nodes. It can provide connection authentication,
transmission encryption (using ECP, RFC 1968), and compression.
PPTP
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private
networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate
PPP packets. The PPTP specification does not describe encryption or authentication features
and relies on the Point-to-Point Protocol being tunneled to implement security functionality.
PRL
The Preferred Roaming List (PRL) is a database residing in a wireless (primarily CDMA)
device, such as a cellphone, that contains information used during the system selection and
acquisition process. Without a PRL, the device may not be able to roam (obtain service out-
side of the home area).
RJ-45
Standard connectors used in Ethernet networks. RJ-45 connectors are similar to standard
RJ-11 telephone connectors, except that RJ-45 connectors can have up to eight wires,
whereas telephone connectors have four wires.
RSSI
Received signal strength indicator (RSSI) is a measurement of the power present in a
received radio signal. In an IEEE 802.11 system, RSSI is the relative received signal strength
in a wireless environment, in arbitrary units. RSSI is an indication of the power level being
received by the antenna. Therefore, the higher the RSSI number (or less negative in some
devices), the stronger the signal.
RTT
The round-trip time (RTT) is the length of time it takes for a signal to be sent plus the length
of time it takes for an acknowledgment of that signal to be received. This time delay therefore
consists of the transmission times between the two points of a signal. In the context of com-
puter networks, the signal is generally a data packet, and the RTT is also known as the ping
time. An Internet user can determine the RTT by using the ping command.
RTU
A remote terminal unit (RTU) is a microprocessor-controlled electronic device that interfaces
objects in the physical world to a distributed control system or SCADA (supervisory control
and data acquisition) system by transmitting telemetry data to a master system, and by using
messages from the master supervisory system to control connected objects.
Rx
Receive.
Server
A computer that provides its resources to other computers and devices on a network. These
include print servers, Internet servers and data servers. A server can also be combined with a
hub or router.
SID
System identity codes (SID) are assigned to every carrier (for example, Verizon, Sprint, Alltel)
by national regulators. SIDs are programmed into the phone when you purchase them. A
phone will maintain a list of “preferred” systems identified by their SID code.
SIM
A subscriber identity module (SIM) is an integrated circuit that securely stores the interna-
tional mobile subscriber identity (IMSI) and the related key used to identify and authenticate
subscribers on mobile telephony devices, such as mobile phones and computers. A SIM
is embedded into a removable SIM card that can be transferred between different mobile
devices.
Sub Network or
Subnet
Found in larger networks, these smaller networks are used to simplify addressing between
numerous computers. Subnets connect together through a router.