You can turn the slow answer recall for external trunks feature off in LD 15
LD 15 – Enable Slow Answer Recall Enhancement for the customer.
LD 15 – Configure Timers for Slow Answer Recall for Transferred External Trunks.
Prompt Response Description
REQ: CHG Change.
TYPE: FTR Features and Options data block
- OPT (SLD) SLA Slow Answer Recall Enhancement (denied) allowed
Prompt Response Description
REQ: NEW CHG Add, or change.
TYPE: TIM Timers
...
- RTIM xxx yyy zzz Recall timers for Slow Answer, Camp-on and Call Waiting,
where:
xxx = 0-(30)-378 for Slow Answer Default 30 seconds
yyy = 0-(30)-510 for Camp-on, and
zzz = 0-(30)-510 for Call Waiting.
These timers indicate in seconds the elapsed time before
attendant recall. Slow Answer must be a multiple of six
seconds.
To change one timer, all three fields must be input.
This is in the features and services book under Slow Answer Recall for Transferred external trunks. Google search found it.
It's a phone system, NOT a clock!