diff --git a/docs/a-netz.html b/docs/a-netz.html
index 909768e..ef2a5a6 100644
--- a/docs/a-netz.html
+++ b/docs/a-netz.html
@@ -287,8 +287,8 @@ 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 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.
+Add command line option "-P 100" to send each tone for 100 milliseconds.
+Try something between 50-200 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.
 </p>
 
diff --git a/src/amps/main.c b/src/amps/main.c
index 50c3ecd..7253856 100644
--- a/src/amps/main.c
+++ b/src/amps/main.c
@@ -47,7 +47,7 @@ int tolerant = 0;
 
 void print_help(const char *arg0)
 {
-	print_help_common(arg0, "-p -d -F yes | no ");
+	print_help_common(arg0, "-p -d -F yes | no [-S sid=<sid>]");
 	/*      -                                                                             - */
 	printf(" -T --channel-type <channel type> | list\n");
 	printf("        Give channel type, use 'list' to get a list. (default = '%s')\n", chan_type_short_name(chan_type[0]));
diff --git a/src/anetz/main.c b/src/anetz/main.c
index ad186d0..5060660 100644
--- a/src/anetz/main.c
+++ b/src/anetz/main.c
@@ -47,7 +47,7 @@ void print_help(const char *arg0)
 	printf("	(e.g. '--geo 51.186959,7.080194') Or use '--geo list' to get a list of\n");
 	printf("        all base station locations.\n");
 	printf(" -P --page-sequence 0 | <ms>\n");
-	printf("        Cycle paging tones, rather than sending simultaniously.\n");
+	printf("        Cycle paging tones, rather than sending simultaniously. Try 100.\n");
 	printf("        (default = '%d')\n", page_sequence);
 	printf(" -L --loss <volume>\n");
 	printf("        Detect loss of carrier by detecting steady noise above given volume in\n");
diff --git a/src/bnetz/main.c b/src/bnetz/main.c
index ad2c3c4..118a21e 100644
--- a/src/bnetz/main.c
+++ b/src/bnetz/main.c
@@ -42,7 +42,7 @@ double lossdetect = 0;
 
 void print_help(const char *arg0)
 {
-	print_help_common(arg0, "");
+	print_help_common(arg0, "[-G <gfs>]");
 	/*      -                                                                             - */
 	printf(" -G --gfs <gruppenfreisignal> | <lat>,<lon>\n");
 	printf("        Gruppenfreisignal\" 1..9 | 19 | 10..18 (default = '%d')\n", gfs);
diff --git a/src/cnetz/main.c b/src/cnetz/main.c
index 5c020fc..b93b9b4 100644
--- a/src/cnetz/main.c
+++ b/src/cnetz/main.c
@@ -51,7 +51,7 @@ int voice_deviation = 1;
 
 void print_help(const char *arg0)
 {
-	print_help_common(arg0, "-S <rx ppm>,<tx ppm> -p -d ");
+	print_help_common(arg0, "[-M] -S <rx ppm>,<tx ppm> -p -d ");
 	/*      -                                                                             - */
 	printf(" -T --channel-type <channel type> | list\n");
 	printf("        Give channel type, use 'list' to get a list. (default = '%s')\n", chan_type_short_name(chan_type[0]));
diff --git a/src/nmt/main.c b/src/nmt/main.c
index 256d464..aa9e034 100644
--- a/src/nmt/main.c
+++ b/src/nmt/main.c
@@ -54,7 +54,7 @@ int send_callerid = 0;
 
 void print_help(const char *arg0)
 {
-	print_help_common(arg0, "-y <traffic area> | list  [-I]");
+	print_help_common(arg0, "-Y <traffic area> | list  [-I 1] [-0 1]");
 	/*      -                                                                             - */
 	printf(" -T --channel-type <channel type> | list\n");
 	printf("        Give channel type, use 'list' to get a list. (default = '%s')\n", chan_type_short_name(chan_type[0]));