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--- voip:cisco1760 [07/01/2021 17:47] – created - external edit 127.0.0.1
+++ voip:cisco1760 [24/06/2025 14:16] (current) – removed andrew
@@ Line 1: / Line 1: @@
-====== Cisco 1760 voip ======
-{{:rb:cisco1760_2.jpg?direct|1760 router}}
-Cisco's 1760 supports two WIC cards in the left hand slots and two Voice WIC cards in the right hand slots. Internally, there are two PVDM slots for a DSP card.
-[[http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a00800920f2.html]]
-[[http://routerjockey.com/2009/08/20/cisco-voip-basics/]]
-===== VIC-2fxs card in UK =====
-from https://supportforums.cisco.com/thread/275664?referring_site=kapi
-Well guys it has taken my 4 hours tonight but I believe I have an answer. Some tests I did with the BT Converse 220 phone (lets call this a UK phone) and a SMART Ohmmeter / Voltmeter suggested that the UK phone was using pins 2 & 5 on the RJ11 to perform the task I was expecting on pins 3 & 4 (centre).
-I decided to do some research and found these sites:
-http://www.gbnet.net/net/uk-telecom/p3-1.html
-http://www.telephonesuk.co.uk/wiring_info.htm
-In a nutshell this confirmed my thoughts, that the speech/ring combination on the UK phone was pins 2 and 5.
-Now we already know that the Router FXS is expecting the signal on pins 3 & 4 so the thing to do is make an RJ11 that meets that need, hence:
-  FXS Wiring:
-  ===========
-  Router Pin 3 <----> UK Phone Pin 2
-  Router Pin 4 <----> UK Phone Pin 5
-  ++
-  OR
-  ++
-  Router Pin 3 <----> UK Phone Pin 5
-  Router Pin 4 <----> UK Phone Pin 2
-  ------] Pin2<------------->Pin4 [--------
-  Phone ].........................[ Vic2FXS
-  ------] Pin5<------------->Pin3 [--------
-  Where the 2<->4 & 5<->3 can be 2<->3 & 5<->4?
-*****The Polarity makes no difference, though one of these will be the correct way*****
-BTW - if you are using a 4 wire cable, the two centre wires are 3-4 (usually red/green) and the two outside (usually yellow/Black) are 2/5. Sorry if that is obvious, it wasn't to me when I started.