Grandstream Networks BudgeTone-100 - 16 - , The SIP message flow based on BYE/Also: method looks something like this: ,

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BudgeTone-100 User Manual Grandstream Networks, Inc.

- 16 - The SIP message flow based on BYE/Also: method looks something like this:

Transferee Transferor Recipient

INVITE

100/180/200

ACK

RTP Media

REFER

501 Not Implemented

BYE with “Also:”

200

INVITE

100/180/200

ACK

RTP Media

Contents

Main User Manual BudgeTone-100 IP Phone www.grandstream.com Version 1.0.5.6 Grandstream Networks, Inc. Table of Contents 1 Welcome 2 Installation 2.1 What is Included in the Package 2.2 Safety Compliances 3 3.1 Key Features 3.2 Hardware Specification 4 4.1 Get Familiar with LCD PM A M Page 4.2 Get Familiar with Keypad 4.3 Make Phone Calls Page Page Page - 15 - Call Flow Diagram For Blind Call Transfer - 16 - The SIP message flow based on BYE/Also: method looks something like this: 4.4 Call Features 5 5.1 Configuration with Keypad Page Page 5.2 Configuration with Web Browser - 22 - Grandstream IP Phone Configuration Page Page Page Page Page Page Page Page Page Page Page 5.3 Configuration through a Central Server 6 6.1 Upgrade with TFTP Warning !!! Page 7 8 Warning !!!