UNITED STATES DEPARTMENT OF AGRICULTURE Rural Utilities Service BULLETIN 1753E-201 SUBJECT: Acceptance Tests for Digital, Stored Program Controlled Central Office Equipment

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Date: 2011-02-15 15:23:10 Business telephone system Dual-tone multi-frequency signaling Signaling Phreaking 9-1-1 Rotary dial Automatic message accounting Trunking Telephone number Telephony Telephone exchanges Blue box		UNITED STATES DEPARTMENT OF AGRICULTURE Rural Utilities Service BULLETIN 1753E-201 SUBJECT: Acceptance Tests for Digital, Stored Program Controlled Central Office Equipment Add to Reading List Source URL: www.rurdev.usda.gov Download Document from Source Website File Size: 179,60 KB Share Document on Facebook

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