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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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 |
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| Before you start - click here to view the ISDN Progress Indicator (PI) assignments |
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columnAttributes | style="text-align:center;vertical-align:middle;",style="text-align:left;vertical-align:middle;" |
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| PI | Definition |
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0 | No Progress Indicator included |
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1 | Not end-to-end ISDN |
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2 | Destination address is not ISDN |
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3 | Origination address is not ISDN |
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4 | Call has returned to ISDN |
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5 | Internetworking Encountered |
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8 | Inband information available |
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10 | Delay Encountered |
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