Pulse or tone dialling, Which dialling method, Pulse dialling – Ericsson 230 User Manual

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Pulse or tone dialling, Which dialling method, Pulse dialling | Ericsson 230 User Manual | Page 73 / 107 Pulse or tone dialling, Which dialling method, Pulse dialling | Ericsson 230 User Manual | Page 73 / 107
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