ICX 500 Gateway
Doc.no.A100K12202
Page 117
The VoIP channels have virtual physical numbers in the ICX-500, starting from 605 to 634. To
reserve a VoIP channel for a SIP Trunk, select
Exchange & System -> NetAudio
in AlphaPro.
Press Insert and select the SIP trunk from the list of nodes. Now enter the physical number of the
VoIP channel, i.e. a number between 605 to 634. It is good practice to start with 605 and go
upwards.
Two VoIP channels are reserved for SIP Trunk node 100
The SIP trunk with reserved VoIP channels will still have access to the other free VoIP channels
available according to the SIP Trunk license.
7.4.3. Limiting the number of VoIP channels used by a SIP Trunk
The SIP Trunk license sets the overall limit on how many simultaneous calls that can be made on
SIP trunks. In addition to this, it is possible to set further limits on how many VoIP channels a
specific SIP Trunk should be able to use. This could be useful if there are multiple SIP trunks, and
one might want to set restrictions on how many VoIP channels one particular trunk can use.