Ascotel® IntelliGate® 150/300 as of I7.9
34 Expansion Stages and System Limits
syd-0210/1.7 – I7.9 – 12.2009
tions. Some of these functions are subject to a licence (see also "Licence-related
system limits", page 47).
• DECT
Operation of a DECT system with cordless terminals. In the case of connections
between DECT and non-DECT environments the voice data has to be converted.
This process requires DSP capacity. DECT channels can be used without a li-
cence.
• VoIP
Connections between IP and non-IP endpoints are made via a gateway. This is
carry out by the integrated Standard Media Switch that switches VoIP channels
for call connections in the IP network. The Media Switch uses DSP resources for
the real-time processing of the call data. The VoIP channels can be used for IP
system terminals, SIP terminals, SIP access channels or to operate an AIN. Inter-
nal connections from IP terminal to IP terminal do not require VoIP channels.
The operating mode for the Media Switch is determined using the VoIP mode pa-
rameter: The VoIP hybrid mode handles both G.711 and G.729 for coding voice
data. Although more voice channels are available per DSP in Only VoIP G.711
than in hybrid mode, the volume of voice data is greater and requires a greater
bandwidth. The configured mode is always valid for the entire node.
VoIP mode = Only VoIP G.711: 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.
VoIP mode = VoIP: One VoIP Channels for Standard Media Switch licence is re-
quired for each VoIP channel.
• FoIP
Reliable real-time fax transmissions via an IP network using the T.38 fax protocol
(ITU-T). FoIP channels can be used without a licence.
• Voice mail
Voice messages and greetings need to be compressed before they are stored in
order to increase the voice memory capacity of the Basic Voice Mail System from
approx. 20 minutes to approx. 160 minutes. This requires an Enterprise Voice Mail
licence and DSP resources. Two compressed Voice Mail channels are available
with the licence. Each additional Voice Mail channel requires an additional Enter-
prise Voice Mail Channels licence. With additional licences the voice memory ca-
pacity can be increased to a total of 400 minutes (Additional Voice Mail Recording
Time licence); the Auto Attendant function can then also be used (Auto Attend-
ant licence).
The operating mode for the Voice Mail System is determined using the Voice
Mail mode parameter: The Normal (G.711 or G.729) hybrid mode handles both
audio formats while the number of voice channels per node is restricted to 4. In
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