Step 7. Use The Ml440 And Ap20 To Do A Quick Site Survey - NEC ML440 Quick Setup Manual

• Enter the Registration Access Code (0000).
• Press Ok (soft key 1).
• The ML440 handset will return to idle. After a few seconds the ML440 handset display should show that it
is registered.

Step 7. Use the ML440 and AP20 to do a Quick Site Survey.

You can use an ML440 handset registered to an AP20 Access Point as a site survey tool. This will help you determine
the relative DECT 6.0 signal strength in various parts of the site. If the signal strength is marginal in certain areas,
consider installing additional AP20 Access Points to extend the coverage.
The AP20 does not have to be programmed for the site DSX and the ML440 does not have to be a real DSX
extension. The only requirement is that the ML440 be registered with the AP20. For example, you can use a demo
unit that is part of a pre-sale site visit to get a quick estimate of the number of AP20 Access Points required.
To do a site survey:
1. Make sure the ML440 handset is properly registered with the AP20 Access Point.
2. Place the AP20 Access Point in a central location, plug it into an IPA or 802.3af-2003 PoE device, and let it start
up.
• If the AP20 is not connected to the LAN, the status LED will flash red after the AP20 boots. This is OK and
will not interfere with the survey.
3. From an ML440 handset registered with the AP20 Access Point, wake the handset and do the following:
a. Press .
MENU
b. Dial (*7378423).
*SERVICE*
c. Scroll to Site survey mode and turn it on.
d. Press twice to return the handset to idle with the Site Survey Mode displayed.
END
4. Walk around the building and monitor the display.
• Line 1 identi es the AP20 Access Point (RPN). It should normally display 00 but the setting doesn't matter.
• Line 2 shows the DECT 6.0 signal strength and is the heart of the site survey tool. While you walk the site,
an area with a signal strength less than -70dBm should get another AP20 Access Point.
• Line 3 displays the frame error (drop) count. PP are frame errors seen by the ML440. FP are frame errors
seen by the AP20. These settings don't matter much for the survey but might be helpful during troubleshooting.
ML440 Wireless IP DECT Quick Reference Guide
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