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E1-tap » History » Revision 4

Revision 3 (laforge, 05/09/2017 05:12 AM) → Revision 4/6 (laforge, 05/09/2017 05:15 AM)

h1. E1/T1 Tap 

 The Osmocom E1/T1 tap adapter allows you to tap into the communication of an E1/T1 line. 

 This is useful for tracing/analyzing communications on any type of E1 based interface, such as A-bis, A and core network interfaces in GSM networks, as well as classic ISDN networks. 

 Two RJ-45 ports are used for passing through your existing E1 line.    Using a switch (SW1), the pass-through can be configured in straight or cross-over mode. 

 Two additional RJ-45 sockets are provided for tapping into either of the two pairs (Rx/Tx) of the E1 line. 

 An additional switch (SW2) can be used to select between high and low impedance tapping. 

 All ports are configured in Digium-compatible pin-out, i,e, pairs 1+2 / 4+5 

 h2. PCB Photograph 

 !e1-tap.jpg! 

 h2. Schematics 

 !e1-tap-sch.png!
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