In order for call transferring to work with a SIP trunk you will need a device that supports call transferring. The device is normally a PBX as handsets do not standardly support call transferring or can handle call transferring for a SIP trunk and require a PBX.
Call Transferring
Table of contents
Related Articles
No ringback tone heard on an IP phone when an outbound call is placed through a Cisco IOS gateway
Recently Updated
Updating Your Direct Debit: A Quick Guide
FreePBX [PART 2] - System Setup Guide (VoIPTalk and OrbTalk)
Telappliant Reseller 2FA Enablement
3CX - Configuring Holiday Prompts | Office Holidays
Operation Times & How to Apply Custom Closed Dates
Configuration of a FreePBX with a VoIPtalk trunk (LEGACY/OLD)