IMG 1010 - Pre-call Announcements
- Kelli Higdon
Description
This feature enables the IMG to play a treatment to an originating number before outbound routing takes place, based on destination number or time of day. An example use would be to inform someone making a long distance call from a hotel room of the service provider. This feature uses the Service Route table, in addition to standard routing tables.
After the pre-call announcement, the call proceeds as normal to the outbound side. If this feature is used, translation table re-run is not performed.
Implementation
This feature uses the Service Route table, in addition to standard routing tables. The flow of a call accessing the various tables is shown below:
Based on Destination Number
Based on Time of Day
Functionality
SS7 COT
If SS7 continuity testing is required on the inbound call leg, the continuity procedure should be completed before the announcement will be played, even if the outbound leg is using the SS7 protocol as well.
If an incoming SS7 IAM requests continuity test, indicated in nature of connection indicator parameter the behavior is as follows. If the Continuity Check Indicator is not 0, IMG waits for 10 seconds for the continuity test success event. Once COT with test success is received within this time, treatment will be played.
Call Tracing
The following information will be present in the call tracing:
DPE output: Invoke Service [Branding Service]
Router table used to get treatment information
Apply treatment: table ID and treatment ID
Treatment completed
Errors
In the event that an internal error occurs during Service Route processing, the call will be allowed to complete without interruption. An Internal error may be:
Router response time out
Router response NACK
No treatment information found on service route table
Any NACK from L4
SS7 continuity test time out.
Before playing the treatment, internally the channel will be parked which will result in “ACM” (for SS7) or “Alerting” ( for H323 and ISDN) or “183 Call Progress” (for SIP) message being sent to inbound side.
Rerun option in a translation entry will not work if service table is selected in that entry.
If “bearer capability” information is present in the incoming signaling setup message, the announcement is made only if the value of “Information Transfer capability is one of the following:
Speech (0x0)
Audio(0x10)
Unrestricted digital information(0x8)
Unrestricted Digital Information w/ Tone&Announcement (0x11)