Grandstream GRP2615: transfer, voicemail and desk wiring
Lightspeed VoiceVersion-specificA practical GRP2615 walkthrough follows both sides of a new-phone handover: making calls confidently and understanding the cables behind the desk. It distinguishes blind from attended transfer, personal from shared voicemail, and a held caller from a shared parked call. The product reference supplies hardware context while this video shows how a provider’s button layout is used.





