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ISDN protocol AT&T custom 1

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bridgetap

ISP
Oct 23, 2006
4
US
Is PRI ISDN AT&T custom protocol the same as NI2, custom 5ess, or custom DMS100?
 
Custom 5ESS if it is coming from a 5ESS.

If it is coming from a 4ESS good luck, it is not compatible with anything including AT&T's own quasi-standard TR 41459

Equipment configured for AT&T Custom 5ESS *may* work with the 4ESS but don't place any high stakes bets.

You'll only see the 4E if you are connecting directly to AT&T's LD network though, so that may help.

Best of luck
 
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