CTC Communications Signs $8 Million Contract with Accelerated Networks.

MOORPARK, Calif.--(BUSINESS WIRE)--Sept. 13, 1999--

CTC Communications Corp. (Nasdaq:CPTL) and Accelerated Networks Monday announced the signing of an $8 million contract for CTC's purchase of Accelerated Networks' Integrated Access Devices (IADs) and Multi-Service Access Platforms (MSAPs).

CTC is currently deploying Accelerated's IADs and MSAPs as part of its Cisco Powered Integrated Communications Network (ICN) and its PowerPath(SM) broadband customer access service.

CTC utilizes Accelerated Networks' IADs at customer locations, as an integral part of CTC's PowerPath(SM) broadband customer access, for delivering converged voice and data services to business customers over digital broadband access facilities.

Accelerated's MSAPs are utilized in CTC's regional POPs and supply GR-303 voice gateway functionality to CTC's ICN Network voice calls, linking CTC customers to the upstream long-distance network.

Accelerated's equipment is being installed at CTC's business customer locations, where voice and data traffic is integrated and delivered over high-speed ATM packet lines to Cisco ATM switches within CTC's ICN Network.

Traffic is routed over the ICN Network to either its on-net destination or to regional POPs, where gateway functionality facilitates Network to Network Interface (NNI) to other ATM and frame relay data networks, the Internet and long-distance voice carriers.

"Building an access network infrastructure that combines toll-quality voice and high-speed data traffic over a single facility is a strong competitive move," observed Jennifer Pigg, senior vice president of data communications at Yankee Group.

"By enabling integrated multi-service delivery to the customer's premises with the Accelerated Networks solution, CTC will be able to extend to its customers a flexible, manageable, cost effective solution."

CTC is currently in the process of completing beta customer testing of its ICN Network and will have 50 customer locations on-net in September and 200 by the end of 1999. CTC's PowerPath(SM) will provide high-speed broadband ATM customer access between the ICN Network and these customer locations.

CTC's PowerPath(SM) delivers integrated services including long distance voice, data, video and Internet to the customer location utilizing a variety of underlying technologies including SDSL, leased T1s and fiber. CTC operates regional POPs in each of the New England states, New York, New Jersey and Maryland.

"The addition of Accelerated's integrated broadband access equipment to our network architecture provides the final pieces for an overall end-to-end multi-service deployment," said Frederic Kunzi, vice president and chief technology officer at CTC.

"We are on track with our deployment and services offering plans and have customer contracts in hand for our September ramp up. As we increase the number of customer locations on-net and move toward full production, Accelerated Networks will continue to meet our requirements with timely delivery of quality products that contribute to keeping our service quality high and our operational and provisioning costs to a minimum."

Suresh Nihalani, president and chief executive officer of Accelerated Networks, stated, "CTC's implementation of our solution underscores our commitment to building flexible, standards-based access products.

"By providing both the access and long-distance voice gateway components to CTC's network, we support their existing infrastructure while allowing them to deliver revenue-generating services within an attractive cost model."

About CTC Communications

CTC is a rapidly growing Integrated Communications Provider (ICP) of integrated communications solutions to medium- and large-sized business customers in the Northeast United States. It provides an extensive array of voice and data services including local, long distance, frame relay, Internet access and other advanced data services.

The company markets its services through its 253 member sales and service representatives located in 25 branch offices throughout Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York and Maryland. Company headquarters are in Waltham, Mass., and CTC can be found on the World Wide Web at www.ctcnet.com

About Accelerated Networks

Accelerated Networks is the leading supplier of voice and data over DSL and integrated broadband access solutions. These systems enable providers to offer a full complement of bundled voice and data services over a single DSL or T1 access line.

Based on open industry standards, Accelerated is the only company to offer all three components of a complete access solution -- customer premises integrated access devices (IADs), NEBS-compliant central office multi-service access platforms (MSAPs) used for concentration, and service POP MSAPs used to gateway into upstream voice and data networks.

In addition to allowing providers to offer enhanced services and generate additional revenues, Accelerated's products dramatically reduce the costs of provisioning and operation, and allow service providers to reduce their time to market.

Since its introduction, Accelerated Networks has garnered five prestigious industry awards, including Best of Category and Best of Show at NetWorld+Interop Atlanta 98, Data Communications' Top 25 Startups and a 1999 Hot Product of the Year, and the International Engineering Consortium (IEC) InfoVision award.

The company received funding from New Enterprise Associates, US Venture Partners, ONSET Ventures, Walden International Investment Group, and Siemens AG. More information on Accelerated Networks and its product line can be found at www.acceleratednetworks.com.

The statements in this news release that relate to future plans, events or performance are forward-looking statements that involve risk and uncertainties that could cause actual results to differ materially from those reflected in the forward-looking statements. Readers are, accordingly, cautioned not to place undue reliance on these forward-looking statements, which speak only as to the date hereof. Additional information about these risks and uncertainties is set forth in CTC's most recent report on Form 10-Q. CTC undertakes no

obligation to release publicly the results of any revisions to these forward-looking statements that may be made to reflect results events or circumstances after the date hereof.