Differences

This shows you the differences between two versions of the page.

--- systems:phones [2012/12/14 18:05] – superwizard
+++ systems:phones [2015/10/16 23:21] (current) – [carrying LAN and telephony on the same cables] superwizard
@@ Line 1: / Line 1: @@
+====== Fax Line with US Robotics Modem ======
+  Phone Line ===> US Robotics ===> Brother Fax
+  Configure Brother Fax  - No to easy receive - answer on ring 4
+  Configure US Robotics Software - in my case MS Fax on Server 2003 to answer on ring 1
+==== What is the Easy Receive setting? ====
+From: http://welcome.solutions.brother.com/BSC/public/eu/gb/en/faq/faq/000000/002400/000060/faq002460_000.html?reg=eu&c=gb&lang=en&prod=mfc9440cn_all
+    OFF means you will have to activate the Brother machine yourself by lifting the handset of an extension telephone on the same line
+    as your Brother machine, then doing one of the following:
+        If you are at the Brother machine, press the Mono Start or Colour Start key.
+        If you are not at the Brother machine, press *51
+====== carrying LAN and telephony on the same cables ======
+From: http://www.zytrax.com/tech/layer_1/cables/mixed.html
+<code>
+We get a lot of mail about carrying LAN and telephony on the same cables. This page is designed to give you
+some information to let YOU decide whether you want to do this or not. It is not easy and you should be very
+comfortable with all the information here before you set out to destroy your premises wiring!
+Pin No. 	strand color 	Name
+	white and orange 	LAN (TX_D1+)
+	orange 			LAN (TX_D1-)
+	white and green 	LAN (RX_D2+)
+	blue 			Telephone 1
+	white and blue 		Telephone 1
+	green 			LAN (RX_D2-)
+	white and brown 	Telephone 2
+	brown 			Telephone 2
+</code>
+====== Telephone Line Parity ======
+From: http://www.westernet.net/Help/RJ45.htm
+    * Pair 1
+      * White with Blue
+        * Tip
+      * Blue
+        * Ring
+From: http://en.wikipedia.org/wiki/Tip_and_ring
+    Tip has a potential of 0 volts with respect to ground, while the battery side carries a DC potential of −48V
+    when in the on-hook (idle) state (nominally −50 volts in the UK).
+From: http://wiki.answers.com/Q/What_is_Phone_line_polarity
+    The red wire is the "ring" or negative wire. The green wire is the "tip" or positive wire.
+From: http://en.wikipedia.org/wiki/Tip_and_ring#Polarity
+    tip wire coded green and ring coded red.
+From: http://www.lanshack.com/wire_phone_jack.aspx
+    Nice Diagram
+From: http://www.eeweb.com/blog/extreme_circuits/phone-line-polarity-checker
+    Because modern phones rectify the DC voltage from the telephone lines before regulating it and
+    because the ring and voice signals are AC, for voice communications the polarity doesn’t really matter.
+=== Telephone RJ11 Wiring Reference ===
+From: http://wiki.robotz.com/index.php/Telephone_RJ11_Wiring_Reference
+<code>
+</code>
+{{http://wiki.robotz.com/images/2/26/Wiki_telephony01.jpg}}
+{{http://wiki.robotz.com/images/9/92/Ph_eight-strand.png}}
 ====== Smartphones: Exchange settings for iPhones, Droids and other devices ======
@@ Line 10: / Line 92: @@
 http://voipsetup.100webspace.net/ipphone.php?afiles=updatePolycomFirmware.php