2008-09-17 23:21:02 -

- Fitch Ratings has upgraded the following classes of commercial mortgage pass-through certificates from Credit Suisse First Boston (CSFB) Mortgage Securities Corp., series 2000-C1:

--$30.6 million class G certificates to 'AA' from 'A+';

--$12.5 million class H certificates to 'A+' from 'A-'.

Additionally, Fitch has affirmed the following classes:

--$574.2 million class A-2 at 'AAA';

--Interest-only (IO) class A-X at 'AAA';

--$50.1 million class B at 'AAA';

--$44.5 million class C at 'AAA';

--$15.3 million class D at 'AAA';

--$29.1 million class E at 'AAA';

--$13.9 million class F at 'AAA';

--$9.8 million class J at 'BBB';

--$11.1

million class K at 'BB-';

--$9.7 million class L at 'B'.

Class A-1 has paid in full. The $8.4 million class M remains at 'C'/DR4. Fitch does not rate the $968,315 class N certificates.

The upgrades are the result of increased credit enhancement from loan payoffs and scheduled amortization. Additionally, the percentage of Fitch identified loans of concern with respect to the non-defeased collateral decreased to 9.7% from 18.8% earlier in the year. A total of fifty-five loans (54%) have defeased since issuance including a shadow rated loan, 1211 Avenue of Americas (5%). As of the August 2008 distribution date, the pool's aggregate certificate balance has decreased 27% to $810.1 million from $1.1 billion at issuance.

Fitch has identified 15 loans of concern (4.4% of the pool), or 9.7% of the non-defeased collateral. They include one specially serviced loan, as well as loans with low debt service coverage ratios (DSCRs), occupancies, or other performance issues.

The loan in special servicing (0.54%) is secured by a hotel in Victoria, TX. The franchise agreement was terminated in early 2008 and the borrower has had difficulty keeping debt service payments current. Operations at the property have deteriorated and losses are expected.

The largest non-defeased loan remaining in the pool is secured by a hotel property in Indianapolis, IN. As of March 31, 2008, operations at the property were stable, with occupancy reported to be 74%. The net operating income DSCR is 1.69 times (x).

Approximately 16.7% of the pool matures through 2010: 11.5% in 2009, and 5.1% in 2010. In addition, 25% of non-defeased loans that remain in the pool have anticipated repayment date (ARD) maturities in 2009 and 2010.

Fitch's rating definitions and the terms of use of such ratings are available on the agency's public site, www.fitchratings.com. Published ratings, criteria and methodologies are available from this site, at all times. Fitch's code of conduct, confidentiality, conflicts of interest, affiliate firewall, compliance and other relevant policies and procedures are also available from the 'Code of Conduct' section of this site.

Fitch Ratings
Chris Bushart, +1-212-908-0606 (New York)
Britt Alison Johnson, +1-312-606-2341 (Chicago)
Media Relations:
Sandro Scenga, +1-212-908-0278 (New York)