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HR4420/i/p Installation Guide
1 Introduction
The HR4420 and other models described in this guide are compact IP routers that
facilitate the transmission of data over UMTS, HSDPA, HSUPA, GPRS, EDGE and/or
ISDN/PSTN networks. All models incorporate a 4-port 10/100 Ethernet switch. Depending
on the model, each unit also incorporates one or more WAN interfaces as follows:
HR4420
HR4420i
HR4420p – wireless GPRS/EDGE/UMTS/HSDPA/HSUPA and PSTN
The routers can be configured either by using commands entered at the serial port (much
like a modem), or via the built-in Web interface. We recommend that you use the Web
interface whenever possible.
In addition to many standard LAN and Internet protocols such as PPP, HR series products
provide a combination of powerful but easy to use configuration, management and
diagnostic tools. This makes them simple and cost-effective solutions for migrating existing
terminal or telemetry equipment, which use wired networks (PSTN, ISDN, etc.), to wireless
operation.
1.1
Front Panel Features
The front panel of the unit incorporates the USB host connectors, a number of LED
indicators depending on the model and the two SIM card-holders as shown in the following
illustration (HR4420i):
USB Host Connectors
The USB host connectors may be used to connect compatible USB client devices such as
memory sticks, serial adapters, etc.
– wireless GPRS/EDGE/UMTS/HSDPA/HSUPA only
– wireless GPRS/EDGE/UMTS/HSDPA/HSUPA and ISDN BRI
5
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