====== 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.