Installation Instructions

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Configuring the system on the DECT Manager
Gigaset N720 DECT IP Multicell System / engbt / A31008-M2314-L101-6-7619 / web-conf.fm / 29.08.2016
Version 2, 06.08.2010
Network Mailbox Configuration:
¤ Enter the Call number or SIP name (URI) for the network mailbox and activate the
network mailbox.
¤ If these settings are to apply to all configured handsets, click on OK.
Settings for Codecs
The voice quality of VoIP calls is determined by the Codec used for the transmission.
To increase the quality, more data must be transmitted. Depending on the bandwidth of
the DSL connection, this can then lead to problems with the volume of data – especially
if several VoIP calls are made simultaneously – so that the transmission no longer takes
place smoothly.
Both parties involved in a phone connection (caller/sender and recipient) must use the
same voice codec. The voice codec is negotiated between the sender and the recipient
when establishing a connection. You can select the voice codecs to be used for this VoIP
account and specify the order in which the codecs are to be suggested when a VoIP
connection is established.
¤ Select the required codecs and define the sequence in which they should be used.
The following voice codecs are supported:
¤ If these settings are to apply to all configured handsets, click on OK.
G.722 Outstanding voice quality. The G.722 wideband voice codec works at the
same bit rate as G.711 (64 kbit/s per voice connection) but at a higher
sampling rate (16 kHz).
G.711 a law/G.711 μ law
Excellent voice quality (comparable with ISDN). The required bandwidth is 64
kbit/s per voice connection.
G.726 Good voice quality (inferior to G.711 but better than G.729). Your phone
supports G.726 with a transmission rate of 32 kbit/s per voice connection.
G.729A Average voice quality. The necessary bandwidth is less than or equal to 8
kbit/s per voice connection.
You need a licence to use the G.729 codec. You can activate this on the
Advanced VoIP Settings page (
£ page 84).