Mitel Aastra 470 System Manual page 51

Standard Media Switch modes of operation
The operation mode of the integrated standard media switch is defined with the
VoIP mode parameter in the DSP configuration (
ways valid for the entire node.
Tab. 19 Integrated Standard Media Switch modes of operation
VoIP mode Explanation
No VoIP No VoIP channels can be configured.
G.711 Although more voice channels are availa-
ble per DSP in mode
mode, the volume of voice data is greater
and requires a greater bandwidth.
G.711/G.729 The VoIP hybrid mode
dles both G.711 and G.729 for coding
voice data.
Secure G.711 Same as
data transmission using the SRTP proto-
col.
Secure G.711/G.729 Same as
secure data transmission using the SRTP
protocol.
Reserving audio channels
The allocation of audio channels between voice mail, auto attendant and call re-
cording is set in the general voice mail settings (
attendant is always used in cases where an incoming call results in greetings being
played back from mailboxes which have been assigned an auto attendant profile.
In all other cases one audio channel is used for voice mail in connection with the
voice mail system. Audio channels for call recording are used exclusively for the
manual or automatic recording of phone calls.
Tab. 20 Reserving audio channels
Parameter
Available audio channels
Reserved for voice mail
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
Expansion Stages and System Capacity
G.711 than in hybrid
G.711/G.729
G.711 but with a more secure
G.711/G.729 but with a more
Explanation
Maximum available audio channels on this node. This
value depends on the DSP configuration.
Number of audio channels on this node that can be used
exclusively for voice mail.
=ym). The configured mode is al-
Licences
Two VoIP channels per system can be
used without a licence. One
for Standard Media Switch
required for each additional VoIP channel.
han- One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel.
One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel. The Secure VoIP
right across the system, is also required.
One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel. The Secure VoIP
right across the system, is also required.
=u1). An audio channel for auto
VoIP Channels
licence is
licence, valid
licence, valid
51