Clock Controler daughter board for TMDI card

[Q6600]

We recently had a cc daughter board go out on us. The replacement part that came in (and works) is NTAK20ADE5.

Only one of our 2 TMDI cards has a clock controller on it, and Id like to get one for the other card for redundancy.

My question is:
How important are the last 2 digits of the part number for the cc? Most of the ones I see for sale are simply listed as NTAK20AD. I also see some cc's that look the same, with part number NTAK20BD.

Thanks for any help.

 

[janaya]

Usually not too bad. They would like to have the release levels the same, but they should work with no issues. I have two different release clock cards working fine with no issues. Worst case is you can't get the clock to establish so it switches back to the working clock source.

 

[curtismo]

I believe you can only have one CC daughterboard on a TMDI per cabinet (unlike large systems where you can have a backup). To increase your redundancy is (if you have another cabinet) move the second TMDI to the other cabinet, placing the TMDI daughterboard on it there, as each cabinet needs a CC.

 

[Q6600]

We have 2 cabinets but after tons and TONS of troubleshooting our faxes occasionally dropping (including playing with all thinkable combinations of FAXA, MPTA, lock to 14.4, enabling/disabling T38 etc etc) the only thing that worked was putting both TMDI cards in the same cabinet as all of the analog cards. (ie removing the MGC from the picture)

 

[EddieDuece]

You only need 1 CC per cabinet.

 

[Q6600]

Thank you for all of the replies.

Is there a way to put a CC in a cabinet without a TMDI card?

We are in a situation where ALL (2) of our TMDI cards have to be in the same cabinet.

 

[curtismo]

The CC is only required as a timing device for T-1 cards. If you don't have a T-1 card in a cabinet, the cabinet doesn't need a clock controller.