MULTIPLE TYPE WITH PLUG-RESTORED INDICATORS
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.
|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
|Home page||BT/GPO Telephones||Ericsson Telephones||Ericsson Home Page||Ericsson PABX||All Telephone Systems|