Description

• Enables/Disables sending Supported:100Rel and by this whether early-dialogs by PRACK will be offered.
• Enabling this could be useful if the opposite wants to play music/ring-back-tone or announcements before the call is connected.

• On -> Supported:100Rel will be send (and opposite could initiate Early-Dialog by sending Required:100Rel)h1. Off -> Supported:100Rel wont be send (and opposite gets no chance to initiate Early-Dialog)

Note: *This does *not influences whether the phone itself will send Required:100Rel if from opposite Supported:100Rel is signaled and by this initiating a early-dialog.
This behavior is influenced by require_prack -> see Settings/require_prack.

Web User Interface

Advanced - SIP/RTP (Tab) - SIP(Section)__Send PRACK

Phone User Interface

N/A

Auto-provisioning