path: root/docs/a-netz.html
diff options
authorAndreas Eversberg <jolly@eversberg.eu>2016-12-06 17:45:48 +0100
committerAndreas Eversberg <jolly@eversberg.eu>2016-12-06 17:46:12 +0100
commiteed826387a791d3e75d05e72131e0141110d264d (patch)
tree1d46874d697cd75689c5b45bbaea6383a49706b4 /docs/a-netz.html
parent27c6e3d860aed41f6ed44997b1410b229f2bd53f (diff)
work on docs
Diffstat (limited to 'docs/a-netz.html')
1 files changed, 6 insertions, 0 deletions
diff --git a/docs/a-netz.html b/docs/a-netz.html
index ef2a5a6..280cad1 100644
--- a/docs/a-netz.html
+++ b/docs/a-netz.html
@@ -176,6 +176,12 @@ The base station detects the tone is missing and the speech path is connected th
<center><img src="a-netz-yellow.jpg"/></center>
+Theoretically all combinations of 30 tones could be assigned to 27405 different subscribers.
+Only 24375 combinations can be encoded with the last 5 digits, because some digit combinations do not define 4 different tones or would generate the same 4 tones as other digit combinations do.
+The actual limitation of subscribers were cause by the limited number of available channels.
4. Release by the mobile station
If the user hangs up, the mobile station transmits a continuous 1750 Hz release tone.