Codec Tieline Gateway User Manual page 191

using newer codecs (not G3), it is possible to configure a Dial Route in the dialing codec program
and a corresponding Answer Route in the answering codec program. This will ensure a particular
audio stream is routed between two codecs consistently. This feature is not available in Tieline G3
codecs, so an Answer Route should be used for deterministic routing when receiving calls from
these codecs.
In principle, the concept of 'routes' operates similarly to how audio ports are used to route multiple
audio streams over IP. Selecting different IP audio port numbers allows users to define which
incoming IP audio stream is routed to a specific answering audio stream configuration on the codec.
This ensures inbound calls from multiple codecs can be consistently routed to the same answering
codec audio streams.
Answer Routes for Non-Tieline (Sessionless) or Tieline G3 ISDN Calls
In some situations you may receive a call from a non-Tieline codec which doesn't support session
data and Dial Route tags. In this situation you can still specify the audio stream Route on the
answering codec using Config 1-2 in ISDN Answer. You can also select the default algorithm.
For example, if a call from a non-Tieline codec is received via B Channel 1 on Module 1 (i.e. no
Dial Route has been specified in the dialing codec):
1. Open the HTML5 Toolbox Web-GUI and click Transport and then ISDN Answer to view and
configure ISDN answering site settings.
2. Click to select a Config.
3. Select a Route for this B channel in one of the two Configs within ISDN Answer, e.g.
Route1, then select the default Non-Tieline encoding algorithm to use when connecting
(default setting is G.722).
4. Click Save when configuration is complete to store the new Config settings.
5. This will associate the incoming call with a corresponding Answer Route configured in the
answering codec program, e.g. Answer Route 1 in the following image.
More detailed information about how to configure the codec to answer and route multiple
sessionless ISDN calls is available in
includes examples to explain how to set up consistent deterministic routing of multiple incoming
sessionless calls.
© Tieline Research Pty. Ltd. 2021
Gateway and Gateway 4 Manual v1.2
Using ISDN Answer Routes for Sessionless ISDN
191
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