When it comes to Integrated services digital network (ISDN),we at 21st Century will always standard out. We provide this service to almost all the Banks and blue chip companies in Lagos and many more are still hooking up due to our reliability.

By subscribing for our ISDN you will be able to send voice, video, and data over the digital telephone lines or normal telephone wires.

21st Century provides two types of ISDN:

Basic Rate Interface (BRI) -- consists of two 64-Kbps B-channels and one D-channel for transmitting control information.
Primary Rate Interface (PRI) -- consists of 30 B-channels and one D-channel.

We offer as much 2Mbps bandwidth.