ISDN allows multiple digital channels to be operated simultaneously through the same regular phone wiring used for analog modems. The change comes about when the telephone company's switches can support digital connections. Therefore, the same physical wiring can be used, but a digital signal, instead of an analog signal, is transmitted across the line. This scheme permits a much higher data transfer rate than analog lines and modems.
With Eonet's Unlimited Dialup ISDN the same services available to the unlimited analog access account are available. New monthly accounts are subject to a one-time $25.00 setup fee. ISDN service requires a special digital line from Southwestern Bell (SBC), which the customer must order seperately through SBC. In Beaumont, the charge from SBC is around $50 per month with an installation charge that varies based on the service contract length. ISDN also requires a special modem or Terminal Adapter (T/A) which can be purchased separately, or through EONET. Average pricing is for the modem is around $100.
| Plan | Price | Details |
| Monthly Dialup 64K ISDN | $24.95 | Just like dial-up access, but at digital speeds of 64kbps |
| Monthly Bank Draft Dialup 128K ISDN | $47.95 | Get a price break for letting us take the hassel out of monthly payments with our auto bank draft. |
| Monthly Dialup 128K ISDN | $49.95 | Just like 64kbps ISDN, but at bonded, "synchronous" speeds of 128kbps. |
| Annual Dialup 128K ISDN | $551.40 | Prepay for a year for our best synchronous 128Kbps digital offering. ($45.95/mo) |
