Aastra 415 - Page 47

Expansion Stages and System Capacity
47
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
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 ( =ym). The configured mode is al-
ways valid for the entire node.
Tab. 19 Integrated Standard Media Switch modes of operation
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 ( =u1). An audio channel for auto
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
VoIP mode Explanation Licences
No VoIP No VoIP channels can be configured.
G.711 Although more voice channels are availa-
ble per DSP in mode G.711 than in hybrid
mode, the volume of voice data is greater
and requires a greater bandwidth.
Two VoIP channels per system can be
used without a licence. One VoIP Channels
for Standard Media Switch licence is
required for each additional VoIP channel.
G.711/G.729 The VoIP hybrid mode G.711/G.729 han-
dles both G.711 and G.729 for coding
voice data.
One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel.
Secure G.711 Same as G.711 but with a more secure
data transmission using the SRTP proto-
col.
One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel. The Secure VoIP licence, valid
right across the system, is also required.
Secure G.711/G.729 Same as G.711/G.729 but with a more
secure data transmission using the SRTP
protocol.
One VoIP Channels for Standard Media
Switch licence is required for each VoIP
channel. The Secure VoIP licence, valid
right across the system, is also required.
Parameter Explanation
Available audio channels Maximum available audio channels on this node. This
value depends on the DSP configuration.
Reserved for voice mail Number of audio channels on this node that can be used
exclusively for voice mail.