Version 6.6 587 October 2014
Installation & Operation Manual 40. General SIP Configuration
Table 40-9: SIP PSTN Settings
Parameter
Name
Type
Provisioning
Type
Description
Channel Select
Mode
Enum
By Phone
Number, Cyclic
Ascending,
Ascending, Cyclic
Descending,
Descending,
Number And
Cyclic Ascending,
According To
Source Number,
Trunk Cyclic
Ascending,
ISDNSuppServTa
ble,
DestNumberAsce
nding
Instant Defines common rule of port allocation for IP
to TEL calls.
By Destination Phone Number - Select
the media server port according to the
called number (see the note below).
Cyclic Ascending – Select the next
available channel in an ascending cycle
order. Always select the next higher
channel number in the Trunk Group.
When the media server reaches the
highest channel number in the Trunk
Group, it selects the lowest channel
number in the Trunk Group and then
starts ascending again.
Ascending – Select the lowest available
channel. Always start at the lowest
channel number in the Trunk Group and
if that channel is not available, select the
next higher channel.
Cyclic Descending – Select the next
available channel in descending cycle
order. Always select the next lower
channel number in the Trunk Group.
When the media server reaches the
lowest channel number in the Trunk
Group, it selects the highest channel
number in the Trunk Group and then start
descending again.
Descending – Select the highest
available channel. Always start at the
highest channel number in the Trunk
Group and if that channel is not available,
select the next lower channel.
Number + Cyclic Ascending – First select
the media server port according to the
called number (see the note below). If the
called number isnt found, then select the
next available channel in ascending
cyclic order. Note that if the called
number is found, but the port associated
with this number is busy, the call is
released.
By Source Phone Number – Select the
media server port according to the calling
number (see the note below).
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