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| 1. |
How can I resolve NAT/Firewall traversal with your SIP softphone ? |
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Our SIP softphone (EPOC) uses by default the STUN & TURN protocols to resolve NAT traversal. Now service providers may have their own NAT traversal schemes, in this case the different options described below may not be relevant anymore (then use the "Never" option). Under Settings\Network\Firewall-NAT, you will find the following options:
- NEVER
- The softphone operates within a private network and do not require to resolve NAT traversal. Or the deployment by the service provider of a NAT resolution capable hardware such as an SBC (Session Border Controller) will be used by default by the softphone and no further action needs to be taken by the end user.
- ALWAYS
- It forces the use of a TURN server. A TURN server acts as a relay on the Internet which introduces voice delay and then decrease the overall voice quality. It should be used only if there are problems that are not resolved by use of NAT feature. This should be checked if you are experiencing problems such as one way audio or no audio.
- WHEN NEEDED
- This feature is used to determine and take actions in order to bypass NAT between your eyeP Media product and your service provider. The STUN protocol is used to determine which kind of NAT it is: Full cone, Registered, Port Registered or Symmetric. In the case of a symmetric NAT, an automatic use of a TURN server will be set.
For information about STUN and TURN protocols, please visit the following links:
Note:
eyeP Media MGCP softphone and Phone SDKs also offer NAT/Firewall traversal (with different options).
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| 2. |
How many ports are used by the eyeP Media softphones (SIP or MGCP) ? |
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If you use the softphone with audio only, 3 ports are necessary, else 5 ports for audio and video.
- One port is used for the general signalization. For SIP the port 5060 is used as in MGCP port 2427 is used.
- Two ports per call are used for the RTP & RTCP audio: 5004, 5005.
- Two ports per call are used for the RTP & RTCP video: 5006, 5007.
Note:
The port 5060 is the one usually attributed to signalization in SIP. Note that the softphone by default uses a random port and that you need to manually choose the 5060 port to comply with the SIP norms.
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| 3. |
I have my proxy set to use a different port than the default one (5060). How do I need to configure the softphone ? |
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You need to set the desired SIP destination port in the Outbound proxy field of the SIP configuration tab. Note that the port number must be precedeed by a column character.
For example, to send the request to the proxy at port 2875, you should enter: :2875
Or if you need to specify an Outbound Proxy address: sip.eyepmedia.net:2875
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| 4. |
What are the requirements for installing and using the eyeP Media TURN server ? |
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Operating systems supported: Windows NT4.0 SP4, 2000, XP and Red Hat 9.0.
Minimum Hardware Requirements: Pentium III, 1GHz, 512 MB of RAM
Recommended Hardware Requirements: Pentium IV, 1.8 GHz, min. 512 MB of RAM, 5 MB of free hard disk space
Network Connection: TCP/IP installed on the host PC 10 mbps (min), 100 mbps (recommended) fast Internet + 1 fixed IP address |
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| 5. |
What are the requirements for installing and using the eyeP Media STUN server ? |
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Operating systems supported: Windows NT4.0 SP4, 2000, XP and Red Hat 9.0
Minimum Hardware Requirements: Pentium 166 MHz, 32 MB of RAM
Recommended hardware Requirements: Pentium II, 400MHz, min. 64 MB of RAM, 5 MB of free hard disk space
Network Connection: TCP/IP installed on the host PC, 10 mbps (min), 100 mbps (recommended) fast Internet + 2 fixed IP address or 2 PCs |
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| 6. |
Is it possible for a client to use the STUN server of his choice ? |
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Yes, the STUN server architecture fully complies with RFC 3489, it can work with any STUN server implementation that follows this RFC and vice versa. |
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| 7. |
Do I need to use eyeP Media's TURN server if the softphone is behind a symmetric NAT ? |
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Yes, such a NAT needs eyeP Media's TURN server to relay the packets to destination. |
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| 8. |
Do I need to use eyeP Media's TURN server if the softphone is behind a full cone NAT ? |
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No, such a NAT doesn't need eyeP Media's TURN server to relay the packets to destination.
Use it only if you have a one way audio problem. Otherwise, do not use a TURN server, since you will introduce additional delays and thereby degrade the overall quality of the communication. |
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