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ViA User Manual v2.0

Navigation: Using the HTML5 Toolbox Web-GUI

Answering Multiple SIP Peer-to-Peer Calls

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The codec is capable of accepting multiple SIP Peer-to-Peer connections and routing them in a deterministic manner to specific audio input and outputs.

 

Tieline session data, in conjunction with unique audio ports, normally facilitates routing of multiple incoming streams to specific inputs and outputs on a single answering codec. Session Description Protocol (SDP) is used over SIP instead of Tieline session data, therefore deterministic routing of incoming calls needs to be done a bit differently. There are two options:

 

1.SIP Accounts: Using the SIP Accounts panel in the HTML5 Toolbox web-GUI, register up to 6 SIP accounts and configure a unique answer Route in each SIP account. Then create a multiple stream answering program (e.g. 2 x Mono Peer-to-Peer)  and configure an answer route in each audio stream matching the routes used for each SIP account you have registered to the codec. In this way, when a call is received via a particular account, it is routed to the audio stream with the matching audio answer route. This process also reliably predetermines which inputs and outputs are used on the answering codec (e.g. Input 1 and Output 1 for the first audio stream in a multiple stream program).

 

HTML_SIP_Account-Route

 

2.SIP Interfaces: When answering multiple incoming peer-to-peer SIP calls, configure an answer Route for incoming peer-to-peer calls via the SIP Interface panel and route them to specific audio streams. Configure answer routes in Interface SIP1 and Interface SIP2 to match answer routes configured in an answering program's audio streams. This process also reliably predetermines which inputs and outputs are used on the answering codec (e.g. Input 2 and Output 2 for the second audio stream in a multiple stream program).

 

HTML SIP Interface - Answer Route

 

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Important Notes:

Ports are arbitrarily assigned when answering calls using SIP accounts. By default the UDP audio port range used is from 5004 to 5054. This setting can be adjusted in the SIP Interfaces panel in the HTML5 Toolbox web-GUI. Ensure your firewall has the required TCP and UDP ports open if you are receiving multiple SIP calls.

Remember to lock an answering program in a codec when answering multiple SIP calls.

Ensure the appropriate TCP and UDP audio ports are open in your firewall to allow multiple SIP audio streams to connect. See Installing the Codec at the Studio for more information.

Failover and SmartStream PLUS redundant streaming are not available with SIP connections