Cisco Small Business SPA509G - Outbound Call Codec Selection Codes; Miscellaneous Parameters; DTMF Parameters

Miscellaneous Parameters
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 194
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Outbound Call Codec Selection Codes
Codec call selection codes affect voice quality. For more information about voice
codecs, see the “Supported Codecs” section on page 137.
• You can choose a
preferred codec for a call or force a call to use a specific
codec.
•
Prefer G.711u (*017110) through G.729a (*01729) —Sets the preferred
codec for next outbound call. If the preferred codec is unavailable, the
second, then the third preferred codec is used, if specified (see the
“Configuring Voice Codecs” section on page 142).
• Force
G.711u (*027110) through G.729a (*02729) —Forces the specified
codec for next outbound call. If the specified codec is unavailable, the
preferred codecs are used in order, if specified (see the “Configuring
Voice Codecs” section on page 142).
Miscellaneous Parameters
This section contains both DTMF parameters and localization parameters:
• DTMF Parameters, page 194
• Localizing Your IP Phone, page 195
• Managing the Time and Date, page 196
• Configuring Daylight Saving Time, page 197
• Daylight Saving Time Examples, page 198
• Selecting a Display Language, page 199
• Creating a Dictionary Server Script, page199
DTMF Parameters
Dual Tone Multi-Frequency (DTMF) is the system used by touch-tone phones.
DTMF assigns a specific frequency (consisting of two separate tones) to each key
so that it can easily be identified by a microprocessor.