1A Voice Storage System: New Custom Calling Services

The introduction of No. 1 ESS in 1965 signaled the beginning of new telephone services to the residence and business customer. Some of these services, called Custom Calling Services (ccs), were made available to customers served by ESS central offices and allowed customers to make more efficient use of their telephone service. Custom Calling Services include Call Waiting, Call Forwarding, Three-way Calling, and Speed Calling. Call Waiting, the most popular service, notifies customers of a second call when they are already on a call. The customer has the option of answering the second call and placing the first call on hold. The service has been very popular with customers who use the telephone frequently. Another popular service is Call Forwarding, which allows customers to "transfer" all of their incoming telephone calls to another telephone number. When the service is activated, calls to the customer's number will automatically be forwarded to another number which the customer specified when the service was activated. Originally, calls could only be forwarded within the local dialing area of the customer, but cus821