| 摘要 |
A combined voiceband and wideband communication system is disclosed. Customer stations are coupled directly to a switching office for voiceband service and wideband service is furnished to the stations via a concentrator which is controlled by the switching office. Signals transmitted from the stations directly to the office control the selection of voiceband or wideband paths to the stations. Provisions are also made for intraconcentrator wideband calls.
|
