work on docs

docs/a-netz.html

@@ -286,7 +286,7 @@ Instead of transmitting all 4 tones at once, they can be transmitted after each
 Each tone is plays for a short time.
 After the last tone has been played, base station starts again with the first tone.
 My phone also responds to a call, even if the tones cycle rather than sent simultaneously.
-In this case the level of each tone is two times higher (+3 dB), but the peak level is two times lower (-3 dB) than the peak level of 4 simultaneous tones.
+In this case the deviation level of each tone is two times higher (+6 dB). (The level transmitted is two times lower (-6 dB) than the peak level of 4 simultaneous tones. This may help transmitters with deviation limiters to make the phone ring.)
 Add command line option "-P 50" to send each tone for 50 milliseconds.
 Try something between 20-100 milliseconds, if the phone still doesn't ring.
 Be sure to check: Does your transmitter has enough frequency deviation (15 KHz is suggested)? Do you really send the correct number of your phone, check the frequencies of your phone and use "-D 0" option to see what 4 frequencies the base station actually transmits.

docs/index.html

@@ -24,7 +24,15 @@ AMPS (Advanced Mobile Phone Service) ; my radio setup<br>
 <br><br>
 
 <p>
-A base station implementation of classic mobile networks. All these networks use analog voice transmission. The signaling is done by tones and/or FSK modulated digital messages. It started with the idea to make a base station for the German B-Netz, but more networks followed.
+A base station implementation of classic mobile networks.
+All these networks use analog voice transmission.
+The signaling is done by tones and/or FSK modulated digital messages.
+It started with the idea to make a base station for the German B-Netz, but more networks followed.
+</p>
+
+<p>
+This project is pure software that requires a transmitter and a receiver connected to the sound card of a Linux PC.
+A second sound card or ISDN card is used to route calls from and to the mobile phone.
 </p>
 
 <h1>*this doc is under construction*</h1>

docs/nmt.html

@@ -775,7 +775,7 @@ It uses the lower DMS layer to transfer data between network and mobile station
 If the phone supports SMS, try sending a test SMS to any number.
 Be sure to set the SMSC (Short Message Service Center) to '767'.
 This software will detect SMS call when the phone dials '767'.
-If you cannot define the SMSC on your phone, send an SMS and check what number was dialed, then use '-I <number>' to define SMSC at this software.
+If you cannot define the SMSC on your phone, send an SMS and check what number was dialed, then use '-S &lt;number&gt;' or '--smsc-number &lt;number&gt;' to define SMSC at this software.
 Also be sure not to enable encryption for SMS.
 The process looks like this:
 </p>
@@ -879,7 +879,7 @@ The process looks like this:
 <pre>
 
 nmt.c:1807 info   : SMS for subscriber '3735859'
-SMS sending '1234' -&gt; '3735859': 1234,3735859,This is a test!
+SMS sending '1234' -&gt; '3735859': This is a test!
 nmt.c:1597 info   : Call to mobile station, paging station id '3735859'
 nmt.c:434 info   : Entering paging state (try 1), sending call to '3,735859'.
 nmt.c:443 info   : Paging on our channel 1.

docs/setup.html

@@ -112,7 +112,7 @@ If you don't have the knowledge about power supplies, ask an expert to help you.
 
 <p>
 Early tests were done without any wiring between radios and sound adapter.
-This may worked for early tests with the B-Netz, but turned out to be a pain in the as.
+This may worked for early tests with the B-Netz, but turned out to be a pain in the ass.
 It is not possible to keep the levels and avoid feed-backs.
 </p>