There are multiple ways about how SIP gateway providers (also known as SIP proxies) handle caller ID passing. Some of them are modern and refined, some are archaic and broken but accepted by convention.
Dandydialer-engineering Freeswitch January 04, 2021
There are multiple ways about how SIP gateway providers (also known as SIP proxies) handle caller ID passing. Some of them are modern and refined, some are archaic and broken but accepted by convention.