Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Reply To: Long silence before call set up

TDMvoip engineer

Where are the calls from/to. Local, National, International.
Delay caused by:
Inter digit pause.
Post dial delay.
Enbloc or overlap signalling.
End of number flag (F)
International destinations.

Consider is it VoIP or TDM/C7/SS7, ISDN etc.