Connecting Internet SIP trunks

Internet SIP trunks connect over Internet from a telco or from an enterprise IP PBX, session border controller (SBC), or similar. Use these instructions if there are no telco-specific instructions.

Prerequisites

  • You have obtained or configured an Internet SIP trunk for Sinch Contact Pro.

  • You need the tenant name. It is in the logon URLs initially provided in the tenant ready notification message. The URL is formed in either of the two following ways:

    • https://login-eu-c1.cc.sinch.com/<tenantname>/...
    • https://cc-<tenantname>.cc.sinch.com/...

      The tenant name starts in most cases with the letter c followed by the number 1, 2, 3 or 4 as in the examples below:

      https://login-eu-c1.cc.sinch.com/c1sampl012345/...

      https://cc-c1sampl012345.cc.sinch.com/...

  • The certificate used for TLS on the customer/telco side must be issued by a public well-known certificate authority.

Service request

Request Sinch to connect Sinch Contact Pro to the SIP trunk.

  1. If you do not have credentials to create service requests, register at https://tickets.sinch.com/secure/Signup!default.jspa.

  2. Create a service request at https://sinchenterprise.atlassian.net/servicedesk/customer/portal/1181.

  3. Include the following information in the service request:

    • Tenant name
    • SIP trunk information
      • Public IP address
      • FQDN
      • Signaling port and protocol (TCP, TLS, UDP)
      • Codec (G.711 A-law/u-law)
      • RTP or SRTP
    • Number range assigned for the SIP trunk and test number
    • If needed, additional information such as technical contacts.