Joan Marsh	1120 20th Street NW
Director, Federal Government Affairs	Suite 1000
	Washington DC  20036
	202/457-3120
	FAX 202/263-2716



	April 12, 2000




Ms. Royce Dickens
Cable Services Bureau
Federal Communications Commission
445 12th Street, SW
Washington, DC 20554

Re:	In the Matter of Applications for Transfer of Control to AT&T Corp. 
("AT&T") of Licenses and Authorizations Held by MediaOne Group, Inc. 
("MediaOne")
	CSB Docket No. 99-251						

Dear Ms. Dickens:

	At the Cable Services Bureau's request, this letter explains further the cable telephony 
penetration chart that was included in AT&T's letter to Deborah Lathen, dated February 22, 
2000, which letter was supplemented by AT&T's letter to you dated March 29, 2000. 

	This letter specifically explains the 1% per month AT&T penetration rate referenced in 
both the February 22nd and March 29th letters.  In those areas where AT&T has been actively 
marketing cable telephony on a commercial basis, it has achieved a penetration rate against cable 
telephony market ready homes of at least 1% per month.  Thus, in the San Francisco Bay Area 
(Fremont and the Tri-Valley area), Chicago area (six communities), Dallas area (5 communities), 
Denver area (five communities), Pittsburgh area (2 communities), Salt Lake City area (one 
community), and Seattle area (one community), AT&T achieved at least 1% penetration of cable 
telephony market ready homes per month for every month it has actively marketed the service 
and has continued to achieve such penetration rates through March 31, 2000.  The significance of 
AT&T's market success is demonstrated by the fact that AT&T only launched its commercial 
roll-out of cable telephony in October, 1999, with the bulk of its roll-out to date occurring in the 
first three months of this year, yet AT&T has almost surpassed the penetration rate MediaOne 
has been able to achieve in over two years.  

	I believe the above provides the information you requested.  Please contact me if you 
have any questions.

						Sincerely,



						Joan Marsh

cc:  	Q. Truong
	L. Senecal

	



				
  	This explanation also applies to the confidential version of the chart, which was filed under seal 
pursuant to the protective order (Bates No. AT&T 002555).