Nynex Computer Services Co and Contingency Trading Facility Inc have signed a joint agreement to provide disaster recovery for brokerage firms. Computer Systems News says that Contingency Trading will provide a range of services including a 12,000 square foot facility in New York as a back-up site equipped with 100 trading stations and 60 private telephone and facsimile lines. Nynex and Contingency Trading will also provide access to personal computers, integration of video-related switching services, remote printer installations, and associated services like the provision of transport between the disaster site and Brooklyn-based facilities. In January, Contingency Trading signed a separate three-year management contract with Financial Systems Services Consulting Group Inc. Nynex and the other two companies say they won’t provide the actual computer back-up, but will act as agents to arrange the leasing of equipment as needed, to be staffed by the clients’ own personnel.