Sasa, Here is what I found from Cisco web site: http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/net_mod2/conntpri.htm#xtocid195789 It says I need a CSU. Any thoughts? Thanks in advance. Jim --- Sasa Milic <[EMAIL PROTECTED]> wrote: > > > 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 > > __________________________________________________ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

