Port Pinout for NM-CEM-4TE1

[wolfgangz]

Hello, i must connect my PBX to a Port from the NM-CEM-4TE1 Module. Do anybody knows the Pinout ??

Thanks

[pradeepde]

You can use RJ-48 T1/E1 straighet-through NM-CEM-4TE1 to connect 75-ohm ohm unbalanced

E1 network.

In general all serial interface types except EIA-530 are available in DTE or DCE format: DTE with a plug connector at the network end and DCE with a

receptacle at the network end. V.35 is available in either mode with either gender at the network end. EIA-530 is available in DTE only."

This URL speaks about NM-CEM-4TE1:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t_7/bbfeamod.htm

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hif_c/ch10/hbbfeamo.htm

http://www.cisco.rw/application/pdf/en/us/guest/products/ps2797/c2001/ccmigration_09186a00800e772f.pdf

[woli]

pradeepde: I bet you have not tested that...

IMHO the NM-CEM-4TE1 does take balanced 120 Ohm E1 only! 75 ohm unbalanced is coax, and wouldn't work properly without level/impedance transformation.

For this purpose cisco sells the CAB-ADP-75-120 adapter....

http://www.cisco.com/en/US/products/hw/modules/ps2033/prod_module_installation_guide09186a00801042f3.html