CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the  incorporation by reference in the prospectus con-
stituting  part of this  Registration  Statement on Form S-3 of our report dated
September 22, 1998, which appears in VTEL  Corporation's  annual reports on Form
10-K and Form 10-K/A for the year ended July 31,  1998.  We also  consent to the
reference to us under the heading "Experts" in such prospectus.


PricewaterhouseCoopers LLP


/s/ PricewaterhouseCoopers LLP
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Austin, Texas
May 3, 1999