This magneto multiple switchboard section is designed for extension up to 8
or 9 sections. It may be used as a single position switchboard up to 120 lines and
extended by additional sections when required. Magneto Switchboards
MULTIPLE TYPE WITH PLUG-RESTORED INDICATORS
N780A type
This magneto multiple switchboard section is designed for extension up to 8
or 9 sections. It may be used as a single position switchboard up to 120 lines and
extended by additional sections when required.
The multiple field per section is arranged for 600 lines, so that a 3-panel multiple will provide for a maximum of 900 lines, i.e., 100 line calling equipment's per section giving an ultimate of 9 sections.
Combined plug-restored drop-indicators N4817 and answering jacks N5030 are employed for the line circuits and push-button restored totally enclosed disc indicators N4782 mounted on the keyboard and associated with the cord circuits for clearing.
All boards are equipped with 15 cord circuits.
A hand generator with arrangements for connecting power ringing, a ringing indicator and night bell and key are fitted. N 780A Type
Operator's equipment includes a micro-telephone and/or a head and breast set, a listening key and a switch for connecting either one of two transmitter batteries. Batteries are not normally supplied. Multiple jack strips N5158 must be ordered when required.
The N781A type switchboards have a position meter fitted above the multiple field and a meter key on the keyboard. If desired, subscribers' meters can be operated in conjunction with this board.
| Code No. Without Metering |
Code No. With Metering |
Line ccts equipped | Line ccts wired | Dimensions ins | Weight lb. |
| N780A1 | N781A1 | 20 | 100 | 61 x 26 x 32 | 212 |
| N780A2 | N781A2 | 40 | 100 | 61 x 26 x 32 | 223 |
| N780A3 | N781A3 | 60 | 100 | 61 x 26 x 32 | 235 |
| N780A4 | N781A4 | 80 | 100 | 61 x 26 x 32 | 246 |
| N780A5 | N781A5 | 100 | 100 | 61 x 26 x 32 | 258 |
| N780A6 | N781A6 | 120 | 120 | 61 x 26 x 32 | 270 |
Taken from the Ericsson Telephone Catalogue Edition 49
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