In TCP and UDP networks the codec port is the endpoint of your connection. Software network ports are doorways for systems to communicate with each other. For example, several codecs in your studio may use the same public static IP address. Unique port numbers can be used to route audio to each codec.

 

Tieline Codec Default Port Settings

By default, the codec uses a TCP session port to send session data and a UDP port to send audio. The session port  is programmed to use the TCP protocol because it is the most likely protocol to get through firewalls – ensuring critical session data (including dial, connect and hang-up data) will be received reliably.

 

The default session and audio port settings in Tieline codecs, for both TCP and UDP connections, are outlined in the Installing the Codec at the Studio section of the manual. This section also contains useful information for configuring port forwarding and troubleshooting IP connections.

 

Changing Codec Port Numbers

Reasons for adjusting the port setting on your codec include:

 

•Creating a path through gateways and firewalls.

•Another IP device is already using a codec’s port number.

•More than one studio codec is in use and each codec requires a different port number.

 

Configuring the Session and Audio Port Numbers used when Dialing a Program

For two codecs to connect, they need to be configured with matching port numbers. If there is a need to change codec port settings, in most situations you should consult your organization’s resident IT professional. To adjust either the session or audio port numbers for a particular connection within a program:

 

1.Press the HOME button to return to the Home screen.

2.Use the navigation buttons on the front panel to select Connect and press the button.

3.Select IP and press the button.

4.Select your preferred IP Session mode and press the button.

5.Use the down navigation button to select Setup and press the button.

6.Navigate to either Session (session protocol) or Protocol (audio protocols) and press .

7.Select the session or audio port you want and press .

8.Use the numeric KEYPAD to add a new port number and press .

 

Changing the Tieline Session Ports when Answering

To adjust the local Tieline session data port used by your codec:

 

1.Press the HOME button to return to the Home screen.

2.Use the navigation buttons on the front panel to select Settings and press the button.

3.Select Tieline Session and press .

4.Navigate to Session Port or Alternative Session Port and press .

5.Adjust the setting and press the button to store the new configuration.

 

Audio Port Settings for Tieline Session Data and Sessionless IP Calls

The codec supports sessionless IP streaming, whereby the codec does not send Tieline session data when attempting to connect. When using this mode you need to configure the "send" audio port (codec port at the remote end of the link to which you are sending audio) and "return" audio port (port used by the local codec to receive audio from the remote codec).

 

It is also possible to configure the send and return audio ports for a codec using Tieline session data to establish IP connections. This may be required because some firewalls require symmetric port configuration.

 

Sessionless Audio Port Configuration

When you select Sessionless as the Session Protocol:

 

•The default value for both the Send and Return (audio) Ports is 9000

•The range of values for the audio ports is 2000 to 65535

•The audio port values can be set independently

•Both audio ports can always be configured, i.e. there is no dependency on encode/decode direction

 

"Tieline Codec" Port Configuration

If using the Tieline Codec setting for call establishment (i.e. Tieline session data is enabled), you can also change the default audio ports if required.

 

•The default value for the Send (audio) Port is 9000

•The range of values for the Send Port is 2000 to 65535

•The default port value for the Return (audio) Port is Automatic. Note: Automatic indicates that the codec will allocate the return port value and send this information to the codec to which you are dialing

•The range of values for the Return Port is 2000 to 65535

 

Sessionless Multicast Connections

For a sessionless multicast server connection:

 

•Only the Send Port is available

•The default value for the port is 9000

•The range of values for the port is 2000 to 65535

 

For a sessionless multicast client connection:

 

•Only the Return Port is available

•The default value for the port is 9000

•The range of values for the port is 2000 to 65535