SIP Provider Swisscom (CH) - SBCon Internet Trunk

General

The Smart Business Connect Trunk via Internet (SBCon Internet Trunk) from Swisscom was tested and released for the first time with SwyxWare 14.00.

The SBCon Internet Trunk is a SIP trunk with user authentication, i.e. you receive information from Swisscom about the UserID, the UserName and the UserPassword, although the names may differ or you may only receive the user name and password. In this case, the UserID is identical to the UserName.

Swisscom operates several different servers for the SBCon Internet Trunk. It is therefore not possible to pre-assign the entry for the registrar / proxy server in the “SIP” tab in the properties of the trunk group. At this point, the corresponding FQDN or IP address that you were given as the registrar / proxy server must be entered.

Platforms

SwyxWare

The SBCon Internet Trunk from Swisscom can be used without restrictions with SwyxWare 14.00 or higher.

SwyxON

The SBCon Internet Trunk from Swisscom is approved for central connection in the data center.

Encryption

The SBCon Internet Trunk from Swisscom is only available with activated encryption. To establish the TLS connection for the SIP messages, it may be necessary to import the required root certificate into the Windows Certificate Store of the SwyxWare server. Further information can be found in the download link at the end of the article.

This import is not necessary when using SwyxON.

Configuration

1. Creation of a location with the information of the assigned number range
2. Creation of a SIP trunk group with the Swisscom SBCon profile "Swisscom SBCon Internet (CH)"
3. In the properties of the SIP trunk group, the FQDN or IP address provided and, if applicable, the port must be entered in the “Registrar” and “Proxy” fields on the “SIP” tab.
   The preconfigured outbound proxy 'strunkpub.joineapp.swisscom.ch' is not changed.
4. Creation of a SIP trunk underneath the newly created SIP trunk group
5. Enter user credentials for registration
6. Configuration of the assigned number range

SIP URIs

In order to assign incoming calls to the correct trunk, it is necessary to configure a SIP URI for the trunk. The assigned number block and the numberformat must be considered.

Codec configuration

In the codec dialog for FAX transmission the option "Fax over IP" has to be deselected.

CLIP No Screening

To activate feature CLIP No screening, in the tab 'Number Signaling' of the trunk properties the option 'Always use originator's number' must be set.

Tested features

• Incoming/outgoing national calls
• Incoming/outgoing international calls
• Correct Calling Line Identification (CLI) on national and international calls
• CLIP No Screening
• Holding and retrieving calls
• Toggeling between two calls
• Call transfer
• Conferencing
• Mutually supported codecs
  • G.722
  • G.711A
  • G.711u
  • G.729
• Incoming/outgoing DTMF signaling in accordance with via RFC2833
• FAX transmission via G.711

Restrictions

None

Tests

09/09/2024 with SwyxWare 14.00

Disclaimer

Verifying interoperability between different SIP providers and the Swyx solution is part of the Enreach Technology Alliance Programme (TAP) tasks. Due to different implementations of the SIP RFCs, it is necessary to determine and provide an individual configuration for each SIP provider.

Within the TAP, Enreach tests a large number of national and international SIP providers in order to make statements about the interoperability with the Swyx solution and the functional scope of the respective SIP trunk. These results and, if needed, configuration advice are published in Help Center articles.

Enreach is in close contact with selected SIP providers to ensure a quick troubleshooting in case of incompatibilities. In addition, tests are repeated at regular intervals to ensure consistent quality.

Despite regular retests it cannot be excluded that incompatibilities with the Swyx solution may occur due to changes in the SIP connection on the provider side or that the provided profile is no longer valid. After creating the trunk group or SIP trunk, the profile settings should be compared with the provider's information and adjusted accordingly in case of deviations.

However, should incompatibilities or problems occur with a tested SIP trunk, no claims for recourse against Enreach GmbH can be derived from this. In such cases, you can contact Enreach Support via your specialist dealer.

The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Swyx in no way guarantees the accuracy of this third-party contact information nor is responsible for it's content.