Re: [OpenSBC] Getting OpenSBC to Generate a "Ring" on 180 Ringing Messages

[OpenSBC F. <ope...@op...>]

This is an inherent limitation when using local REFER in OSBC.   Since the call between PSTN and OSBC is already connected, the 180 alerting message is absorbed by OSBC.   There is currently no mechanism in OSBC to play a 'ringing' file, and the caller would hear silence while the call is being transferred.