POWER OF ATTORNEY
To Sign and File Reports Under
Section 16(a) of the Securities
Exchange Act of 1934 With
Respect to Equity
Securities of Tollgrade
Communications. Inc.

KNOW ALL BY THESE PRESENTS,
that the undersigned hereby constitutes
and appoints Sara M. Antol and Richard T. Lechern,
each of them, his true
and lawful attorney-in-fact and agent,
with full power of
substitution, for him and in his name,
place and stead, to sign any and all reports of the
undersigned under Section 16(a) of the
Securities Exchange Act of 1934 with respect to equity
securities of Tollgrade Communications, Inc.,
and to file the same with the Securities and
Exchange Commission and NASDAQ, granting
unto said attorney-in-fact and agent,
full power
and authority to do and perform each and
every act and thing requisite and
necessary to be done
as fully to all intents and purposes
as the undersigned might or could do in person, hereby
ratifying and confirming all that said
attorney-in-fact and agent, or his or their substitute or
substitutes, may lawfully do or cause
to be done by virtue hereof. The undersigned
acknowledges that the foregoing
attorney-in-fact and agent, in serving in such capacity at the
request of the undersigned, are not assuming
any of the undersigned's responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in
effect unless notice of its revocation shall
have been filed by the undersigned with
the Securities and Exchange Commission and
NASDAQ.

IN WITNESS WHEREOF, the undersigned has executed and delivered this
Power of Attorney the date set forth below.

DATE: April 22, 1997

SIGNATURE: /s/James J. Barnes