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VoIP相关参考资料汇总

VoIP 相关参考资料（Voice Over IP Reference Page）
VoIP在今天变的越来越重要，下面是我们收集的一些资料系统对您有帮助。相关协议介绍会相继更新完善。

信令 Signaling
H.323 H.323
Megaco H.248 Gateway Control Protocol
MGCP Media Gateway Control Protocol
RVP over IP Remote Voice Protocol Over IP Specification
SAPv2 Session Announcement Protocol
SGCP Simple Gateway Control Protocol
SIP Session Initiation Protocol
Skinny Skinny Client Control Protocol (Cisco)

Media

DVB Digital Video Broadcasting
H.261 Video stream for transport using the real-time transport
H.263 Bitstream in the Real-time Transport Protocol
RTCP RTP Control protocol
RTP Real-Time Transport

H.323 Protocols Suite
H.225 Covers narrow-band visual telephone services
H.225 Annex G
H.225E
H.235 Security and authentication
H.323SET
H.245 Negotiates channel usage and capabilities
H.450.1 Series defines Supplementary Services for H.323
H.450.2 Call Transfer supplementary service for H.323
H.450.3 Call diversion supplementary service for H.323
H.450.4 Call Hold supplementary service
H.450.5 Call Park supplementary service
H.450.6 Call Waiting supplementary service
H.450.7 Message Waiting Indication supplementary service
H.450.8 Calling Party Name Presentation supplementary service
H.450.9 Completion of Calls to Busy Subscribers supplementary service
H.450.10 Call Offer supplementary service
H.450.11 Call Intrusion supplementary service
H.450.12 ANF-CMN supplementary service
RAS Manages registration, admission, status
T.38 IP-based fax service maps
T.125 Multipoint Communication Service Protocol (MCS).

SIP 协议 SIP Protocols
MIME
SDP Session Description Protocol
SIP Session Initiation Protocol

VoIP参考资料
VoIP Standards
H.323 Architecture
Converged Network Architecture
SIP Architecture
Fine-Tuning Voice over Packet Services
Voice-over-data network gear ahead of business demand
Voice over ATM
Voice over Frame Relay, IP and ATM
Voice over Frame Relay
Voice over IP Testing: A Practical Guide
H.323 Tutorial

VoIP 文章 VoIP Articles
Voice Over IP: The Battle Heats Up
VoIP in the Enterprise

Internet Telephony - An Overview Including comparison between SIP and H.323.... 2 篇回复 | 参与讨论 | 浏览讨论区 sip协议 | Ray |

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混沌海 | Dionysus 有问必答

eyeBeam FAQ

Q. Why can’t eyeBeam register with my proxy?
A. You need to make sure your credentials are still valid with your VoIP provider. If they are, try to enter host name of stun server as a default stun server cannot be determined by DNS query for your domain.

Q. How do I make my speakers ring instead of my headset?
A. You need to set the speaker phone device in your settings (Settings | Media | Audio | Devices | Speaker phone).

Q. How do you access the settings screen?
A. Right click on the LCD screen and select settings.

Q. Why do I get “Remote party does not support your preferred” when I try to send video to my friend?
A. Because you and your friend don’t share a matching video codec in the list of enabled codecs. Try enabling more codecs (Settings | Media | Video | Advanced | Codecs)

Q. Why can I make calls with XLite but not with eyeBeam?
A. eyeBeam uses more advanced DNS queries to figure out the best proxy to use for your domain which XLite didn’t support. Ensure that your router doesn’t block DNS packets from going through.

Q. Why won’t my license key take effect?
A. Make sure you press Apply before pressing OK.

Q. Why doesn’t my Clarisys USB headset work with eyeBeam?
A. Because the specific version of eyeBeam you have doesn’t include the optional DLL to make your Clarisys headset work. Contact your sales representative to obtain the proper version.

Q. Where are my settings stored?
A. There are under C:\Documents and Settings\USERNAME\Local Settings\Application Data\CounterPath\eyeBeam where USERNAME is your windows login user name.

The folder containing your settings is a hidden folder. To view hidden folders:
1. Open any folder in Explorer.
2. Choose "Tools" then "Folder Options".
3. When the multi-tabbed dialog box appears, select the "View" tab.
4. Select "Show hidden files and folders".
5. Click "OK" to close the dialog box.

Q. What ports need to be forwarded by my router?
A. You shouldn’t have to forward any ports with your router as our STUN discovery process will discover the appropriate ports to use; however, if you still need to forward them, you need to forward the SIP listen port (Settings | Account) and the RTP listen port (Settings | System | Network | RTP).

Q. What are the audio codecs that are provided for free?
A. They are for

Narrow Band:
G711a and G711u, iLBC, GSM, Speex

Wide Band:
Speex, L16, DVI4

Q. Why won’t my username work with my proxy?
A. You need to make sure there are no dashes/plus/minus signs in your URI.

Q. I click the voicemail icon and I am not connected to my voicemail.
A. The voicemail icon is just to let you know that you have messages waiting. You need to call in to your voicemail server as specified by your ISP.

Q. What’s the panic settings page for?
A. The panic settings page contains advanced audio settings for adjusting audio quality for some rare conditions that exist for some users. Unless specified by a CounterPath support engineer, you should not touch them.

Q. Why when I am in a call and I receive a second call, the remote party does not get a busy signal?
A. Because eyeBeam supports multiple incoming phone lines much like call waiting works with PSTN telephones.

Q. How can I disable the incoming call audio tone?
A. This is not possible in version 1.1 of eyeBeam. It is a feature in our upcoming 2.0 release.

Q. What are these buttons labeled 1 through 6 on the phone for?
A. These are virtual phone lines. eyeBeam supports multiple concurrent phone calls.

Q. What does “use as outbound proxy” mean?
A. It means that all SIP messages issued by your copy of eyeBeam must be routed through your SIP proxy server.

Q. What does it mean to enable/disable a SIP account?
A. eyeBeam supports up to 10 SIP accounts. You can adjust which account is activated by enabling/disabling it.

Q. Can I dial using a display name?
A. No. You must dial using a URI.

Q. What are all the settings that can be changed with eyeBeam?
A. There are over 3000 settings in eyeBeam. We are in the process of creating the documentation for all these settings.

Q. What is the Jitter settings page for?
A. The jitter settings page contains advanced video settings for adjusting video quality for some rare conditions that exist for some users. Unless specified by a CounterPath support engineer, you should not touch them.

Q. What is Firewall Outbound Proxy setting for?
A. The Firewall Outbound Proxy setting is for entering the host name of a proxy that will re-route your signal and media to get around some restrictions from some type of firewall devices. Most of the time, the host name of the server where a session border controller application is running will be used as your firewall outbound proxy setting.

Q. Can I re-use my license key on multiple copies of eyeBeam?
A. No. You may only use a license for eyeBeam on a single machine. You must purchase multiple licenses to use on multiple machines.

Q. Why can I use my headset as my speaker phone device?
A. Because the terms headset/speaker phone are logical terms for the devices. The actual type of device being used for those really doesn’t matter. eyeBeam will work with all of them.

Q. What is a line and what is a SIP account?
A. A SIP account is an account you would get from your VoIP provider much like you would get an e-mail account from your ISP. A line is a virtual line as eyeBeam supports multiple phone calls at the same time.... 2 篇回复 | 参与讨论 | 浏览讨论区有问必答 | willis |