Are SIP trunks as reliable as an ISDN PRI T1? I’m asked this question a lot, so I thought it’d be a great blog topic. I don’t think you are as concerned with this as the amber lights in the server ...

My company owns several videoconference units that connect to a ISDN PRI T1. Several users reported problems with making and receiving video calls. The person who put this in has since left the ...

This might sound foolish but I came into the project after the equipment was ordered and so i'm stuck with it. I have 2 sites. Each site has an ISDN PRI (switchtype dms-100) and a cisco 2612 router ...

Dynamic Instruments offers a wide variety of recording solutions from 4 to 192 channels. Users can combine analog and digital passive taps including: T1, E1, ISDN PRI, ISDN BRI and 50 proprietary ...