This is a list of selected residential ISDN tariffs. The list compares tariffs among various local exchange telephone companies, based upon three different usage levels, plus the cost of a nailed up line. All tariffs are reported before the Subscriber Line Charge (SLC).

Company/State	50 2b /100 b	100 2b / 200 b	200 2b / 400 b	Nailed Up
Bell Atlantic
Delaware (under appeal)	25	25	25	25
Maryland	48	74	106	236
Washington, DC (Recommendation of the OPC)	32	32	32	32
New Jersey (Recommendation of the Division of Ratepayer Advocate)	20	30	49	144
NATCO
Arkansas	18	18	18	18
Roseville
California	29	29	29	29
Ameritech
Michigan	33	36	44	30
Ohio	29	29	29	29
Wisconsin	33	38	45	27
Illinois A	27	29	34	24
Illinois B	30	32	37	27
Illinois C	33	36	41	31
Indiana	195	298	505	1,651
PacBell
California (Present tariff, 30 percent of usage during peak hours)	43	61	98	283
California (Proposed tariff, all usage in off peak hours, half at each off peak rate)	25	25	93	NA
SBC
Texas (Tariff was contested by PUC Staff)	46	46	46	46
Arkansas (Tariff wasn't contested by PUC Staff)	88	93	93	93
US West
New Mexico (on appeal)	41	41	41	41
Washington (Rate hike was opposed)	63	63	63	63
Bell South
Alabama	69	69	69	69
Florida	57	57	57	57
Georgia	63	63	63	63
Kentucky	60	60	60	60
Louisiana	75	75	75	75
Mississippi	70	70	70	70
North Carolina	79	79	79	79
South Carolina	67	67	67	67
Tennessee (Rates were contested)	30	30	30	30
NYNEX
Connecticut	161	301	581	2,104
Maine	181	332	633	2,198
Mass, 617-508	124	221	414	1,415
Mass, 413	91	154	280	928
New Hampshire - A	207	389	753	2,625
New Hampshire - B	267	510	995	3,492
New York	161	301	581	2,104
Rhode Island	123	221	417	1,412
Vermont	114	171	285	887
* Usage is based upon the following assumptions. Except for the nailed up lines, time online is divided as follows: from 7 a.m. to 5 p.m. 30 percent, from 5 p.m. to 7 p.m. 10 percent, from 7 p.m. to 11 p.m. 35 percent and fr om 11 p.m. to 7 am and weekends, 25 percent. When there are per call charges, we assumed 1 call per hour. A month is 4.3 weeks, or 722.4 hours.