Inter-Tel AXXESS Manual page 693

C. DATA CONNECTIONS
19.6 The following data connections are maintained by the Private IP Networking feature:
•
Data Channels: The system maintains one data connection between each node pro-
grammed for Private IP Networking. The system uses this data connection for call con-
trol and datagram messaging. When a data connection fails, the system attempts to
establish a new connection using alternative IPRCs if they are available. If all data con-
nections fail, the system may drop calls in progress, and further call attempts using the
connection are blocked.
•
Route Optimization: Call control route optimization using IP works almost identically
to call control route optimization using T1/E1/PRI. The system identifies instances
where a call passes through the same node twice (a route loop) and eliminates the loop.
Note that the system does release all resources within the loop, including DSPs.
D. AUDIO CONNECTIONS
19.7 The system monitors the following audio connections:
•
Audio Connection Status: The system monitors the connectivity of all IPRCs config-
ured for private networking to avoid connecting to an IPRC that is not connected to the
network. To avoid network congestion, the system may take up to 30 seconds to iden-
tify an IPRC that has lost its connection. During this time, the system may fail to make
audio connections for new calls.
•
Audio Connection Parameters: The system uses the audio connection parameters
specified by the node on which the call originates.
•
Audio Route Optimization: The system attempts to find the audio route that requires
the fewest conversions from IP to Pulse Code Modulation (PCM). It can only optimize
the audio route between IPRCs. Also, audio route optimization occurs only when a
party, such as a hunt group, multi-ring device, or transferring party, merges out of a call;
not during call setup. If the call passes through a system node running version 6.X or
earlier, the system aborts any attempt to optimize audio.
•
Insufficient Bandwidth: The system monitors the in time audio packet thresholds,
which are determined by the Average In Time Percentage Threshold and Average In
Time Frame Timer fields (located in DB Programming under System\Devices and Fea-
ture Codes\Node IP Connection Groups\<Extension>\IP Call Configuration; see
185
olds have been violated on a call using a vocoder other than G.729B, the system will:
—
—
—
If this occurs, you have the choice of continuing the call or terminating it. For details
about bandwidth utilization, see
Data Connections
®
INTER-TEL
for more information on these settings). When the system detects that these thresh-
Display a transient warning message that says INSUF BANDWIDTH FOR
VOICE.
Generate a message print warning.
Leave the call active.
page
®
AXXESS MANUAL VERSION 11.0 – May 2008
2-94.
System Features
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