Interfacing with I-1500DSU in Japan

[Steven Griffin]

All,

Does anyone know which WIC/VWIC card one needs to use to interface with an NTT I-1500DSU? We are going to be running a PRI-ISDN line off of it and don't know if the VWIC-1MFT-T1 card we have will work with it.

Thanks in advance for any responses!

[paolo bevilacqua]

Ask NTT if the circuit is true T1 or J1. If the latter, the VWIC won't work.

[Steven Griffin]

According to NTT they say it is a T-1. The issue is they are delivering it on fiber using the I-1500DSU as the termination point. Will a VWIC-1MFT-T1/E1 card work with that DSU?

[paolo bevilacqua]

Yes. Note the correct P/N is either

VWIC2-1MFT-T1/E1 or VWIC-1MFT-T1

The latter is an older type with somewhat less features,, but both will work.

Hope this help, please rate post if it does!

[Steven Griffin]

As a follow-up to this earlier post; we finally found out, once we were on-site, that the T-1 was delivered by fiber optic cable. NTT had to bring in a special CSU to convert it to copper so we could plug into it.

So, a word of warning for anyone doing Unified Communications in Japan, never assume any PSTN connection will be a standard ITU interface.