User`s guide

2.6 Product feature:
Data channel
This is one of the most useful and
powerful features of the E6701A.
The test set acts as a GPRS base
station, for connection to one
wireless appliance at a time, with
complete connectivity through to
outside GGSNs. A GGSN provides
the gateway between the GPRS net-
work and the public packet data
network such as the internet. This
means you can quickly and easily
connect a wireless device to your
choice of real Internet Web sites
through a simple LAN connection to
the Internet.
You can also perform protocol log-
ging during data channel operation.
Even though IP data is usually
discontinuous, the E6701A allows
you to make TX and RX parametric
measurements during data channel
operation.
This demonstration uses a Wireless
Application Protocol (WAP) browser
built into the phone to show how IP
datagrams can be transmitted and
received. Data will be exchanged
using WML (Wireless Markup
Language), which is derived from
HTML for wireless device use. Using
the phone’s WAP browser, you will
connect to a standalone WAP proxy
gateway program running on your
PC.
2.6.1 Running gateway software
To run the infinite WAPLite proxy
gateway software on your PC:
1. Choose Start.
2. Choose Programs.
3. Choose the WAPLite directory
4. Select WAPLite. In the window
with multiple tabs, select
Options.
5. The box next to Use HTTP Proxy
Server should NOT be checked;
additionally, other boxes on this
tab should NOT be checked.
6. At the bottom of the tab, if the
word “Apply” is in black letters,
click the Apply box. If “Apply”
is in gray letters, skip this step.
7. On the Stats tab, click on Install
Service to turn on the WAP
Gateway software on your PC.
With the WAPLite software running
on your PC, external devices can
access this gateway server via the
PC LAN port. The WAPLite server
has one set of test data (a logo and
some text) provided with the soft-
ware that can be accessed by an
external WAP browser, which is
designed into most GPRS phones.
2.6.2 Browsing the gateway
To browse the WAPLite gateway
with the phone:
1. On the test set, press the Call
Setup key. Note: The Motorola
Timeport phone should be on
and attached to the test set.
2. The phone’s display should
show the Browser menu. If the
phone’s Browser menu is not
displayed, press the phone’s
Menu key briefly.
3. When the display shows “Access
Internet/Select?” press the OK
key to select.
4. Hold down the Menu key for
about three seconds and
release.
5. On the Browser menu, scroll to
2>Web Favorites with the
up/down arrow key and press
OK.
6. Scroll to http://local/waplite.wml
and press OK. (The phone
requests data from the device at
the address above.)
Watch the test set display. At the
bottom, in the active cell window,
you can note the status will switch
between “PDP active” and “transfer-
ring” as IP datagrams are sent back
and forth between the phone and
the WAPLite server on the PC.
Note the three sections of the display:
a. downlink power will flash each
time the test set transmits to
the phone
b. counters track data packets and
RACHs
c. error reports continuously
indicate the quality of the
wireless appliance links. The
BLER is measured using the
Agilent-patented ACK/NACK
method.
7. On the phone’s display, look at
the downloaded image and use
the scroll up/down key to read
the text. If you get a web server
error, press the phone’s OK
button to go Back to see the
image, and quickly scroll to see
the text. (There appears to be a
bug in the WAPLite data down-
load in some versions.)
8. Press the C key three times to
return to the Browser menu.
Note: This WAPLite image and text
is the only information accessible by
a WAP browser that is stored in the
Infinite WAPLite gateway at installa-
tion. On the PC, note that the
Infinite WAPLite window shows one
active user, and lists some requests
processed.
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