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In addition to the Message Translation Usage Overview, the following article contains a listing of the pre-programmed Message Translations on the

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Note

For SIP to TDM calls, the first Progress/183 or Alert/180 response sent on the SIP side always contains an SDP; as a result, any inband audio is cut through or ringback is generated. Even if the Message Translation Table is configured to not include SDP, this process overrides the configuration.

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Before you start - click here to view the ISDN Progress Indicator (PI) assignments
Before you start - click here to view the ISDN Progress Indicator (PI) assignments
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PI

Definition

0

No Progress Indicator included

1

Not end-to-end ISDN

2

Destination address is not ISDN

3

Origination address is not ISDN

4

Call has returned to ISDN

5

Internetworking Encountered

8

Inband information available

10

Delay Encountered

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