File:No. 1 Crossbar MTC.jpg
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Summary
| Description |
English: Maintenance center for the VErmont No. 1 Crossbar office at Connections Museum, Seattle. This switch was installed in 1942 and served the neighborhoods of northeast Seattle.
From left to right, Incoming Trunk Test (ITT), Terminating Sender Test (TST), Terminating Trouble Indicator (TTI), Originating Trouble Indicator (OTI) Outgoing Trunk Test (OGTT), OGT Jack Bay, Sender Make Busy frame (SMB frame), Originating Sender Test (OST), District Junctor Test (DJT) |
| Date | |
| Source | Own work |
| Author | Neverether |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:37, 1 June 2020 | | 4,032 × 3,024 (3.76 MB) | Neverether | Cross-wiki upload from en.wikipedia.org |
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