User`s guide
Table Of Contents
- Overview
- Unpacking and Installation
- Getting Started
- Internet Phone Calls
- PSTN Phone Calls
- DPH-70 Configuration
- Additional Features
- Appendix A: Procedure for entering alphanumeric and special
- Appendix B: Troubleshooting
- All outgoing calls are PSTN calls. It does not dial in Inter
- “Please configure the phone and try again”
- “Please check the phone line and try again”
- “Password entered is incorrect. Try again”
- “The ISP line is busy, please call after some time”
- “The ISP server is not responding”
- “ISP connection could not be established, try later”
- “Please check your ISP parameters and try again”
- “Bad phone line, Please contact customer support”
- “Please check your calling card parameters and try again”
- “The number you have dialed is not locatable, please check t
- “The number you have called is busy, please call after some
- “Incorrect value. Press ‘1’ to edit, ‘2’ to skip”
- Fast error tone for a short period while disconnection phone
- All outgoing calls are PSTN calls. It does not dial in Inter
- Appendix C: DPH-70 Product Specifications
DPH-70 User’s Guide
Easy to use set-up, guided by voice prompts in local language.
Intelligent selection of codec (G.723 or G.729A) based on Internet connection speed.
Excellent voice quality and low end-to-end delay using low latency adaptive jitter buffer,
silence suppression, and comfort noise generation techniques.
User-friendly hands-free dialing method.
Make multiple calls without connecting to the Internet each time.
Call transfer, last number redial, and adjustable speaker volume control.
Password protection to your valuable configuration information.
Remote software update support.
1.1 Acronyms
LED Light Emitting Diode
IP Internet Protocol
ISP Internet Service Provider
PPP Point-to-Point Protocol
PSTN Public Switched Telephone Network
RTP Real Time Protocol
SIP Session Initiation Protocol
TFTP Trivial File Transfer Protocol
VOIP Voice Over Internet Protocol, same as Internet Telephony
1.2 Definitions
Idle State: DPH-70 is said to be in idle state when the speaker is off, LEDs are off and handset is
on Hook.
Configuration state: DPH-70 goes to configuration state to edit and verify the configuration
information.
Receive state: DPH-70 goes to this state to receive calls from other phones. In this state, phone
is always connected to Internet.
Speaker Mode: You can dial a phone number in hands free mode and listen to call progress
messages.
Handset Mode: You can lift the handset any time to listen. If the speaker is on while lifting, it is
turned off automatically.
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