AudioCodes Customer Support
Page 3
Table of Contents
Introduction ................................................................................................................ 6
Frequently Asked Questions .................................................................................... 7
Web Access ...................................................................................................................... 7
Q1: How must I configure my PC in order to connect to the MP-20x Web interface? ..... 7
Q2: Why can’t I access MP-20x Web interface when my PC is connected to the LAN? . 7
Q3: Why can’t I access the MP-20x Web interface while connected to the WAN? ......... 8
Q4: Why can’t I ping MP-20x? .......................................................................................... 8
Q5: How do I ping/trace route from MP-20x to other devices in the network? ................. 8
Q6: Can I use different types of Internet connections such as L2TP, PPTP, and
PPPoE? ..................................................................................................................... 9
Default Configuration ....................................................................................................... 10
Q1: How do I restore MP-20x to factory default settings? .............................................. 10
SIP Configurations .......................................................................................................... 11
Q1: Which SIP parameters do I have to configure for MP-20x? .................................... 11
VoIP Troubleshooting ...................................................................................................... 12
Q1: How do I troubleshoot SIP calls? ............................................................................. 12
Q2: Why do I hear a fast busy tone after I pick up the phone (even though all SIP
parameters have been configured)? ........................................................................ 13
Q3: Why do I hear a fast busy tone when making outgoing calls (even though SIP
parameters have been configured)? ........................................................................ 14
Q4: How do I troubleshoot voice echo? ......................................................................... 14
Regional Settings ............................................................................................................ 15
Q1: The ring back tone and busy tone are unfamiliar. How can I adjust my call
progress tone? ......................................................................................................... 15
Bandwidth ........................................................................................................................ 16
Q1: How can I reduce bandwidth utilization for calls from MP-20x? .............................. 16
Q2: How can I improve voice quality when using Emule/BitTorrent on a PC behind
MP-20x? .................................................................................................................. 17
Functionalities ................................................................................................................. 18
Q1: Does MP-20x support special services such as call forwarding, conference calls,
and do-not-disturb? .................................................................................................. 18
Q2: What types of fax transport methods are supported by MP-20x? ........................... 19
Q3: How do I make a three-way conference call (using Flash Hook Only)? .................. 20
Q4: Does MP-20x support SIP proxy redundancy? ....................................................... 20
Q5: Can MP-20x operate behind a NAT? ...................................................................... 21
Q6: What is the maximum number of phones that can be connected in parallel to a
single MP-20x FXS port? ......................................................................................... 21
Q7: Can I set up my service so that my caller ID on outbound calls is blocked by
default for all calls, without having to dial additional digits? .................................... 21
Software Upgrade ........................................................................................................... 22
Q1: How do I upgrade the MP-20x software? ................................................................ 22
Q2: How can I automatically upgrade one or more MP-20x devices? ........................... 23
Telnet and Advanced Configuration ................................................................................ 24
Q1: Can I manage MP-20x from the Telnet? ................................................................. 24
Q2: How can I hide the configuration file in the Web? ................................................... 24
Q3: Why doesn’t MP-20x upgrade from a file in the HTTP server after it is retrieved? . 25
Q4: When is the configuration file retrieved from the HTTP server? ............................. 25
Q5: How do I open a TR-069 license? ........................................................................... 25
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