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

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Field Description
Call Waiting
Default is enable.
When you are talking with other people, You can choose If you want to
hear the notice when th ere is a ne w coming call. If the call waiting
function is On, if there is a new incomeing call, you will hear the call
waiting notice in your cu rrent call. If you set the function to Off, then
you will not hear any notice.
Ring Timeout
Default is 60(sec). After how long the system will repl y the busy(486
busy) message.
Caller ID Scheme
Set thecaller ID mode, it support FSK Bellcore, DTFM, CID-Japnan,
DTMF-Brazil, DTMF-Denmark.
FSK Bellcore: FSK caller ID mode.
DTMF: Before first ring it will send the DTMF caller ID data.
CID-Japnan: Janpan (Janpan) caller ID mode
DTMF-Brazil: Brazil (Brazil) caller ID mode
DTMF-Denmark: Denmark (Denmark) caller ID mode
CID Type II
To enable the show caller ID function in call waiting.
When enable this function system receive a new call in call waiting, it
will display the caller ID
LNote: Your Phone must also support CID Type2.
T.38 (FAX)
Enable/Disable T.38 FAX function.
T.38 Pass-trough
codec
Define the T.38 pass through codec, it can support G.711 u-law/G.711
a-law.
Auto Answer and PIN (VIP-157)
Field Description
Auto Answer Type
Auto Answer: There are different incoming call types for flexable
applications. The Trunk Gateway function needs to arrange in with the
registered Server System. The 3-Party subscribers could make
Off-Net call (PSTN) through the FXO port of VIP-157.
AutoAnswer
cournte
r
Auto Answer Counter is to set after the ring count met the number you
set then the auto answer will enable.
PIN Code
PIN Code Number
For security issue, You’d better to set the PIN Code. If you have set
the PIN code, you will hear a tone to inform you input the PIN Code
then you can dial out. Please notice that the PIN Code function
couldn’t function with Trunk Gateway function together.