Channelized E1/PRI connectivity

[father]

Hi...

I got Cisco 3640 & 2621 with NM-1FE2CE1U & NM-1CE1U.

1.Can this module work with balanced E-1(120ohm) line?

2.We are getting E-1 from SDH ring ,directly till our router.Do we still need

E1modem (CSU/DSU) to connect with router Pri port or can connect directly to PRI port (without E1modem)?

Thanks & reagrds,

V. Sharma

[tepatel]

You can convert the same module from Balanced to un-balanced and vice-a-versa by changing the jumper settings from 120 to 75 ohm etc..

You do need CSU module to support E1/PRI

Pl. visit follwing url for more information

http://www.cisco.com/univercd/cc/td/doc/pcat/enpinep1.htm

[father]

(1) Can we use DB-15-to-BNC Connectors (cable) for 120ohm.

(2)If we get clock source from E1 line (E1 from SDH ring) ,is still require E1 CSU or what are the situation ,in which we can avoid E1CSU?

Thanks/regards,

V. Sharma