User Manual
Table Of Contents
- Chapter 1 Introduction
- Chapter 2 Preparations & Installation
- Chapter 3 Network Service Configurations
- Chapter 4 VoIP Telephone Adapter Configurations
- Chapter 5 Netowrk
- Chapter 6 NAT Trans
- Chapter 7 SIP Setting
- Chapter 8 Advance Setting
- Chapter 9 Other Setting
- Appendix A Voice Communication Samples
- Case 1: ATA to ATA connection via IP address
- Case 2: (Peer-to-Peer mode) VIP-157S Port 1 to Port 2 communications
- Case 3: Call Forward Feature_Example 1
- Case 4: Call Forward Feature_Example 2
- Case 5: Call Forward Feature_Example 3
- Case 6: Call Forward Feature_Example 4
- Case 7: Auto Answer Feature_IP to PSTN
- Case 8: Auto Answer Feature_PSTN to IP
- Appendix B The method of operation guide
- Appendix C VIP-156/VIP-156PE/VIP-157/VIP-157S Specifications

Volume Settings for VIP-156T/VIP-156PT
Beside the above settings, VIP-157 also can set the volume of PSTN.
PSTN-Out Volume is to set the PSTN volume for you can hear.
PSTN-In Gain is to set the volume send out to the other side’s handset.
Volume Settings for VIP-157
28BDail Plan Setting
This page defines the Dial Plan Setting function. This function is when you input the phone number by
the keypad but you don’t need to press “#”. After time out the system will dial directly.
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