The phone functions stanza is a named stanza [[Structure of Config Files#Settings to name other Stanzas|pointed to]] by the [[#link_functions=|link_function=]] key/value pair. Functions within this stanza are used decode DTMF commands when accessing the node from a telephone. The traditional usage is to point phone_functions= to the same stanza as named by [[#functions=|functions=]] thereby having functions from a phone and from the local node the same.
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Sample:
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<pre>
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link_functions = functions ; use local functions
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[functions]
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712 = status,12 ; Give Time of Day (local only)
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</pre>
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or
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<pre>
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link_functions = my_phone_functions ; use link functions