Service (including 911/emergency services) may not function after an extended power outage.
Transfers of existing telephone number not always available. Caller ID on TV requires subscription to XFINITY TV and Voice services.
WEAF and WJZ, the flagships of the two earlier networks, were operated side-by-side for about a year as part of the new NBC.
On April 5, 1927, NBC expanded to the West Coast with the launch of the NBC Orange Network, also known as the Pacific Coast Network.C., in 1923, attempted to transmit audio between cities via low-quality telegraph lines.