File:Panel BCO Sender Link Frame.jpg
![File:Panel BCO Sender Link Frame.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Panel_BCO_Sender_Link_Frame.jpg/403px-Panel_BCO_Sender_Link_Frame.jpg?20090109214239)
Original file (2,000 × 2,972 pixels, file size: 3.5 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionPanel BCO Sender Link Frame.jpg |
The Panel Link Frame was used during call setup to connect an idle Sender to the District selector requesting. When this connection was established the caller would hear dialtone. As the caller dialed a number the sender would call in a Decoder to obtain routing information and start setting up the connection while the caller was still dialing. At the completion of call setup the Sender would 'advance' the District selector into 'talk' position. At this point the Sender and Link are out of the call and the caller could hear the distant end. A Link Frame could handle 100 Senders. Link selector circuit failures were indicated by a minor alarm, aisle pilot and frame indicator lamp. Panel offices had different sounding bells for minor alarms. This was accomplished by using different bells in the ringer boxes. |
Date | 9 January 2009 (original upload date) |
Source | No machine-readable source provided. Own work assumed (based on copyright claims). |
Author | No machine-readable author provided. Panel Switchman assumed (based on copyright claims). |
Licensing
[edit]Public domainPublic domainfalsefalse |
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:42, 9 January 2009 | ![]() | 2,000 × 2,972 (3.5 MB) | Panel Switchman (talk | contribs) | The Panel Link Frame was used during call setup to connect an idle Sender to the District selector requesting. When this connection was established the caller would hear dialtone. As the caller dialed a number the sender would call in a Decoder to obtain |
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Horizontal resolution | 400 dpi |
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Vertical resolution | 400 dpi |
Software used | Adobe Photoshop 7.0 |
File change date and time | 15:58, 10 April 2007 |
Y and C positioning | Co-sited |
Exif version | 2.2 |
Color space | sRGB |