2.1 Backgrounds about SIP Trunks
The SIP Trunks serve are used for connecting PrivateServer to a local PBX or to a SIP Voice provider. The above statement implies that a Trunk can be used both for receiving and placing calls in a bidirectional way.
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| By Secure Call design the SIP Trunks are available only for the PrivateGSM Enterprise Edition. PrivateGSM Professional Edition can't place calls on a Trunk. |
The PrivateServer is designed to perform always as a client when configuring a SIP Trunk. This means that PrivateServer itself can not act as a Trunk Provider.
Even if a each SIP Trunk can be used to both receive and place calls, PrivateServer has to be properly configured in order to act in a bidirectional way. The Trunk setup should . By default the Inbound Trunks are configured for enabling the calls directed to external number through a different PBX. They can be later set up to let the PrivateServer receive incoming calls from a different PBX. This setup is made promoting one Inbound Trunk as an Outbound one.
| Info |
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| Basically the Trunk setup has to be done for the |
| outgoing calls first and after this function is enabled you can setup it for |
| incoming calls as well. |
From the PrivateServer version 2.5 you have two main SIP Trunk Families:
- Secure Trunks
The incoming calls Trunks are configured in the Inbound entry that you access under Main Menu -> PBX INTEGRATION. Outgoing calls are configured into the Outbound entry that is under the Inbound one.
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- Unsecure Trunks
The former ones entail both TLS and SRTP, while the latter none of them: they use just RTP over UDP (thus without TLS).
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