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| First Page | Document Content | |
|---|---|---|
 Date: 2012-11-01 09:29:58Dial tone Rotary dial Pulse dialing Speed dial Dual-tone multi-frequency signaling Telephone exchange Telephone Phreaking Telephony Telephone numbers Identifiers |
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| First Page | Document Content | |
|---|---|---|
Date: 2012-11-01 09:29:58Dial tone Rotary dial Pulse dialing Speed dial Dual-tone multi-frequency signaling Telephone exchange Telephone Phreaking Telephony Telephone numbers Identifiers |
|
TECHNICAL Practice 1600A Series Practice