Exhibit 16.1

September 25, 2001

Securities and Exchange Commission
450 Fifth Street, NW
Washington, DC 20549

Commissioners:

We have read the statements made by Teltone Corporation (copy attached), which we understand will be filed with the Commission, pursuant to Item 4 of Form 8-K, as part of the Company's Form 8-K/A report dated September 13, 2001. We agree with the statements concerning our Firm in such Form 8-K/A.

Very truly yours,

/s/ PricewaterhouseCoopers LLP