Product Description

Nokia MetroSite EDGE Base Station features
DN991444 © Nokia Corporation Draft 23 (98)
Issue 3-0 en Draft Nokia Proprietary and Confidential
When the Nokia MetroSite EDGE Base Station itself is installed inside a
building, the antennas can be located outdoors. The size of antenna feeders, 1/4”
and 3/8”, support the flexibility of installation.
The TRX test includes an antenna cable detection feature which, in most of the
cases, verifies whether the cable connection between the TRX and the antenna is
free of faults.
3.3 Telecommunication features
The most important telecommunication features supported by the Nokia
MetroSite EDGE Base Station software are discussed in this section. The basic
features are presented as a list in Section 8.3. A detailed description of all the
telecommunication features can be found in the software release documentation.
Half rate speech coding
The use of half rate (HR) speech coding makes it possible to almost double the
amount of available traffic channels on the radio path. This is achieved with the
existing transmission lines on the Abis interface. Half rate coding enables the use
of 8 Kbit/s channels.
Enhanced full rate speech coding
Enhanced full rate (EFR) speech coding improves the voice quality in all channel
conditions. The coding is based on improvements made for half rate coding
applied to the existing GSM full rate channel coding.
Support for data services
The Nokia MetroSite EDGE Base Station supports a number of features that
enable efficient data traffic. The most advanced of those features are dealt with
here. See also Section 3.3.1 in this document.
• High Speed Circuit Switched Data (HSCD). This feature provides
accelerated data rates for the end-user applications such as browsing the
Internet, file transfer and facsimile.
• 14.4 Kbit/s GSM data services provide accelerated user data rates at 14.4
Kbit/s level. This feature can be combined with HSCSD.
• Non-transparent and transparent data (9600, 4800, 2400 bit/s). Non-
transparent means that the data rate can be changed automatically during
the call (due to increased traffic, for example). Transparent data uses a
fixed data rate throughout the duration of a call.