AASTRA SIP-DECT (Release 3.0)- OM System Manual - Installation, Administration and Maintenance EN - Manual (Page 17)

SIP–DECT OM System Manual Release 3.0 1 Overview
Aastra depl-1624/1.0 Page: 17 (241)
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Support of SIP–DECT XML terminal interface
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Support of microSD card to save subscription data and the most important local device
data (Aastra 620d / Aastra 630d)
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Additional subscription options
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Additional alarm melodies
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Profile indication in idle display
For more details please see /28/and /29/.
The Aastra 650c handset has the same feature set as the current Aastra 600d handsets. In
addition to the Aastra 600d firmware release 4.0x feature set, the new Aastra 650c handset
supports CAT-iq 1.0 and is thus capable to run G.722 (wideband) voice connections. For the
full experience of wideband audio the handset hardware e.g. speakers, microphone,
processor, have been improved.