Instead of using magneto-ringing table telephone No. 382
in connection with inter-communication switches Nos. 774, 775, and 776, a similar table
telephone, combined with intercommunication switch for 10, 15, and 20 metallic lines, is
No. 779 shown
Magneto-Ringing Inter-Communication Table Telephone for Metallic Lines, with Hand Micro-Telephone No. 512 with Cord No. 2142, and Generator No. 487.
|Number of lines||10||15||20|
|Height in Inches||13.2||13.2||13.2|
|Width in Inches||11.2||11.2||11.2|
|Weight in lbs||12.3||12.3||12.3|
When magneto or battery ringing telephone instruments are ordered, it must always be distinctly mentioned if they are to be used in connection with intercommunication switches, as the connections of the instruments are somewhat different.
Taken from the Ericsson Telephone Catalogue 1903
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