ASAI and Call Control
service_circuit | Must not be present |
return_ack | [optional] If this parameter is present, it indicates that |
| the ECS should return an acknowledgment to the |
| request. If this parameter is not present, the ECS |
| does not return an acknowledgment. |
uui_info | [optional] The ECS supports receiving UUI in the |
| Third Party Make Call request from the adjunct. If an |
| ASAI adjunct provides UUI in a Third Party Make Call, |
| then the ECS stores that UUI with the call. |
| UUI from a Third Party Make Call will be sent in any |
| ISDN SETUP message for the call, in the Alerting and |
| Call Offered Event Reports, and in a Route Request, |
| if one is made. |
| The UUI IE sent over an ISDN trunk can contain more |
| data than the UUI IE sent to ASAI. This happens |
| when the ISDN trunk group is administered with |
| supplementary service protocol other than B, and the |
| UUI IE Treatment is set to “shared”. The UUI for ASAI |
| is packed within the shared UUI before it is sent over |
| an ISDN trunk, and is unpacked at the other end. |
| This is transparent to the ASAI adjuncts, with two |
| exceptions: |
| 1. If the maximum size UUI allowed on the ISDN |
| trunk is exceeded, then the lower priority data |
| items will be dropped. Whether or not this means |
| that ASAI UUI is dropped depends on the |
| priorities of the data items. These priorities are |
| administered on each trunk group form. Each item |
| stored in shared UUI uses two extra bytes. |
| Therefore, if the ISDN trunk group is administered |
| to allow a shared UUI length of 32 bytes then the |
| ASAI UUI will be limited to 30 bytes instead of 32. |
| 2. If a service provider, or customer equipment other |
| than a DEFINITY ECS (R6.3 or later) will be |
| interpreting the contents of the UUI IE, then the |
| trunk group used to place those calls should have |
| its UUI IE Treatment set to |
| This sends the UUI as specified by the ASAI |
| application, without change. |
| For more information, see the Section, ‘‘Integrated |
| Services Digital Network (ISDN),’’ in Chapter 12, |
| ‘‘ASAIand Feature Interactions.’’ |
