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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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.
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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Internal Translations ISDN to SIP
Listed are the default (internal) message translations for ISDN → SIP:
# | Incoming ISDN side | Outgoing SIP side | How the Unable to show "metadata-from": No such page "_space_variables" Internally Processes the Translation |
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1 | Alert without PI | 180 Ringing without SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Alert | PI | Not Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Alert | Yes | Not Present | Yes |
|
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2 | Alert with PI 1, 8, 2 | 180 Ringing; if early media negotiated, don't include SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Early media negotiated | Alert | PI | 1 | 8 | 2 |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Alert | Yes | Not Present | Yes |
|
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3 | Alert with PI 1, 8, 2 | 180 Ringing; if early media not negotiated, include SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Early media not negotiated | Alert | PI | 1 | 8 | 2 |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Alert | Yes | Present | Yes |
|
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4 | Progress with PI 1, 8, 2 | 183 Progress; if early media negotiated, don't include SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Early media negotiated | Progress | PI | 1 | 8 | 2 |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | Yes | Not Present | Yes |
|
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5 | Progress with PI 1, 8, 2 | 183 Progress; if early media not negotiated, include SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Early media not negotiated | Progress | PI | 1 | 8 | 2 |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | Yes | Present | Yes |
|
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6 | Progress with PI 3, 4 | 183 Progress without SDP |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Progress | PI | 3 | 4 |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | Yes | Not Present | Yes |
|
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7 | Progress without PI | Drop message |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Progress | PI | Not Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | No | N/A | N/A |
|
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Please note that ISDN → SIP message translations are only used on SIP → ISDN calls.
Internal Translations SIP to ISDN
Listed are the default (internal) message translations for SIP → ISDN:
# | Incoming SIP side | Outgoing ISDN side | How the Unable to show "metadata-from": No such page "_space_variables" Internally Processes the Translation |
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1 | 180 Ringing without SDP | Alerting without PI |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Alert | PI | Not Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Alert | No on cut through | Not Present | Yes On Early Media Detection |
|
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2 | 180 Ringing with SDP | Alerting with PI = 8 |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Alert | PI | Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Alert | No on cut through | PI=8 | Yes On Early Media Detection |
|
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3 | 183 Progress without SDP | Progress with PI = 1 |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Progress | PI | Not Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | No on subsequent | PI=1 | Yes On Early Media Detection |
|
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4 | 183 Progress SDP | Progress with PI = 8 |
Incoming Filter Early Media Status | IN Message | IN IE Type | IN Progress Indicator |
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Any | Progress | PI | Present |
Outgoing Translation OUT Message | Send Message | OUT IE | Media Cut Through |
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Progress | No on subsequent | PI=8 | Yes On Early Media Detection |
|
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Please note that SIP → ISDN message translations are only used on ISDN → SIP calls.