> We've got a 3640 with DB15 E1 connector, E1 line is
> Rj45. I thought we should use a CSU, right?
No. For T carrier, you must use DSU/DSU. For E carrier, only
DSU is required, while CSU (or LTU-Line Termination Unit in
E terminology) is not.
So, E1 module that you have includes DSU. DB-15 connector is
there just to force you to buy $100 cisco cable CAB-E1/PRI.
But, it is simple to make that cable, and it will cost you
probably less that $1 (it cost me around 1$, actually :) ).
What you need is:
- one DB-15 male connector
- one RJ-45 connector
- utp cable, 1-3 meters
Now, connect pins:
DB-15 RJ-45
===== =====
2 -------- 4
9 -------- 5
8 -------- 1
15 -------- 2
Pins 1 and 2 are one pair, pins 4 and 5 are another.
Regards,
Sasa, CCNP
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