Bridged PBX BLF support

There have been requests for remote BLF support for extensions connected to PBX systems that are interconnected since 2018 and possibly earlier. 3CX, Grandstream, Vodia, Xorcom, FreePBX and others have had this functionality for years; yet Yeastar remains behind its peers in this regard. The current PBX bridging function is simply too limited in today's market. As Yeastar pushes forward with the P series and touts its advanced capabilities, I truly hope this function is added to include updating the S series as well. The S series footprint is too large to continue to ignore and will present a challenge for those who want to expand their businesses to consider replacing the existing S PBXs.