EXHIBIT B

Power of Attorney

The undersigned hereby make, constitute and appoint each of Edward F. Glassmeyer and Ann H. Lamont, acting jointly or individually, with full power of substitution, the true and lawful attorney-in-fact for the undersigned, in the undersigned’s name, place and stead and on the undersigned’s behalf, to complete, execute and file with the United States Securities and Exchange Commission (the “Commission”), a statement on Schedule 13G with respect to the securities of Airspan Networks Inc., a Washington corporation, and any and all amendments thereto pursuant to Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, and any other forms, certificates, documents or instruments (including a joint filing agreement) that the attorneys-in-fact (or either of them) deems necessary or appropriate in order to enable the undersigned to comply with the requirements of said Section 13(d) and said rules and regulations.

This Power of Attorney shall remain in effect for a period of two years from the date hereof or until such earlier date as a written revocation thereof is filed with the Commission.

Dated: October 4, 2004

Oak Investment Partners VIII, Limited Partnership

By: Oak Associates VIII, LLC, its general partner

By:	/s/ Edward F. Glassmeyer
	Name:  Edward F. Glassmeyer
	Title:  Managing Member
Oak Associates VIII, LLC
By:	/s/ Edward F. Glassmeyer
	Name:  Edward F. Glassmeyer
	Title:  Managing Member
Oak VIII Affiliates Fund, Limited Partnership
By: Oak VIII Affiliates, LLC, its general partner
By:	/s/ Edward F. Glassmeyer
	Name:  Edward F. Glassmeyer
	Title:  Managing Member
Oak VIII Affiliates, LLC
By:	/s/ Edward F. Glassmeyer
	Name:  Edward F. Glassmeyer
	Title:  Managing Member