Dialogic IMG - Backward Call Indicators Table (SIP to SIP-T Interworking)
- Kelli Higdon
- Nathaniel Halbrooks
Table of Contents
Backward Call Indicators (Octet 1)
| H | G | F | E | D | C | B | A |
|---|---|---|---|---|---|---|---|---|
Charge Indicators |
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No Indication |
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| 0 | 0 |
No Charge |
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| 0 | 1 |
Charge |
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| 1 | 0 |
Spare |
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| 1 | 1 |
Called Party Status Indicator |
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No Indication |
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| 0 | 0 |
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Subscriber free |
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| 0 | 1 |
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Connect when free |
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| 1 | 0 |
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Excessive Delay |
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| 1 | 1 |
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Called Partys Category Indicator |
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No Indication |
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| 0 | 0 |
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Ordinary Subscriber |
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| 0 | 1 |
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Pay Phone |
|
| 1 | 0 |
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Spare |
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| 1 | 1 |
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End to end method indicator |
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No end-to-end method available | 0 | 0 |
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Pass-along method available | 0 | 1 |
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SCCP method available | 1 | 0 |
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Pass-along and SCCP methods available | 1 | 1 |
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Backward Call Indicators (Octet 2)
| H | G | F | E | D | C | B | A |
|---|---|---|---|---|---|---|---|---|
Interworking Indicator |
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No Interworking encountered |
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| 0 |
Interworking Encountered |
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| 1 |
IAM segmentation indicator |
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No Indication |
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| 0 |
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Additional Info has been received and added to IAM |
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| 1 |
|
ISUP Indicator |
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ISUP Not used all the way (end to end) |
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| 0 |
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ISUP used all the way (end to end) |
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| 1 |
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Holding Indicator |
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Holding not required |
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| 0 |
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Holding required |
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| 1 |
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ISDN access indicator |
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Terminating access non-ISDN |
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| 0 |
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Terminating Access ISDN |
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| 1 |
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Echo Control device indicator |
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Incoming half-echo control device not included |
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| 0 |
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Incoming half-echo control device included |
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| 1 |
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SCCP method indicator |
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No Indication | 0 | 0 |
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Connectionless method available | 0 | 1 |
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Connection-oriented method available | 1 | 0 |
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Connectionless and connection-oriented method available | 1 | 1 |
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