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History: Monitor Tap Cable

Source of version: 4 (current)

{img src=http://www.ss7box.com/xyg_images/Rj45plug-8p8c.png align=center imalign=right}

The monitor tap cable allows connection of the receivers of two E1/T1 Sangoma ports to be used as monitors. The pinout diagram below shows a E1/T1 crossover tap cable. Another option is to build a straight cable tap that can be used with either straight or crossover cables.

__References:__
[http://wiki.sangoma.com/Cablepinouts|Sangoma port pinout specifications].

__Materials:__
*Quanity 4, segment of [http://en.wikipedia.org/wiki/Category_5_cable|Cat5e] or [http://en.wikipedia.org/wiki/Category_3_cable|Cat3] cable.
*Quantity 4, 8 position block connectors, aka RJ-45 connectors
*Small tie-wrap
*Cable splice insulation, for example
**Heat shrink tubing
**Tape
**Silicone

__Tools:__
*Wire cutters
*Block connector crimp tool
*Soldering pencil and solder

{img src=http://www.ss7box.com/xyg_images/mon-tap-cable-po.jpg align=center imalign=right}

__Procedure:__
#Identify wires used for positions 1, 2, 4, 5 in the 8 position block connector. Ignore the crossover side of the cable if a crossover tap is being made.
#Label two cable segements as __Terminals__
#Label one segment as __Tap_A__
#Label one segment as __Tap_B__
#Create tap junction
##Bare the 1, 2, 4, 5 wires on the __Terminal__ segments
##Bare the 1 and 2 wires on both of the __Tap__ segments
##Twist the 1 wires together on the __Terminal__ segements; this is the wire 1 junction; repeat for the 2, 4, and 5 wires
##For __Tap_A__
###Twist the 1 wire to the the wire 1 junction; solder
###Twist the 2 wire to the the wire 2 junction; solder
##For __Tap_B__
###Twist the 1 wire to the the wire 4 junction; solder
###Twist the 2 wire to the the wire 5 junction; solder
##Bundle the junction with a tie-wrap
#Install the 1, 2, 4, 5 wires in the corresponding pins on an 8 position block connector on one of the __Terminal__ segments
#Attach 8 position block connector to remaining __Terminal__ segment
##If straight cable, install the 1, 2, 4, 5 wires in the corresponding pins on an 8 position block connector
##If crossover cable,
###Install wire 1 to connector position 4
###Install wire 2 to connector position 5
###Install wire 4 to connector position 1
###Install wire 5 to connector position 2
# Attach 8 position connector to __Tap_A__
##Install wire 1 of to connector position 1
##Install wire 2 of to connector position 2
# Attach 8 position connector to __Tap_B__
##Install wire 1 of to connector position 2
##Install wire 2 of to connector position 2

{img src=http://www.ss7box.com/xyg_images/tap_cable_photo.jpg align=center}


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