ISDN is the most common digital standard for fixed telephony devices. This can be supplied in either Basic (2 circuit capacity) or Primary (24 or 30 circuit capacity) versions. Most medium to large companies would use Primary ISDN circuits carried on T1 or E1 physical connections.
Dual River will arrange the ISDN service that is right for your company, so you will only pay for what is needed. The Primary (PRI) ISDN circuit is available at a minimum of 10 channels from our partners.
