Bring your own SIP Trunk

Nubitalk enables you to bring your own SIP Trunk to the system, but, before configuring your own SIP Trunk, ensure that:

  • The numbering plan format shall be E.164 prefixed by +.
  • The IPs must be public/Visible if in a VPN
  • The firewall should barrier source requested IPs 
  • That your SIP Trunk is configured to connect to the following IPs (the inbound calls have to be balanced between the 2 IPs of each SBC):

    SBC EU

    Protocol

    IP

    Port

    SIP/UDP

    137.117.201.92

    5060

    SIP/UDP

    40.68.117.89

    5060

    RTP/UDP

    137.117.201.92

    16000 to 40000

    RTP/UDP

    40.68.117.89

    16000 to 40000

     

Also, keep in mind the following restrictions:

  • Nubitalk supports the following RFCs:
    • SIP 2.0 - RFC3261
    • SDP - RFC2327
    • RTP - RFC3550
    • REFER - RFC3515

 

  • And the supported codecs are:
    • Audio: G711  alaw and ulaw
      • supported ptime is 20ms

  • DTMF tones:
    • DTMF tones must be over RTP according to IETF RFC 2833 (out band)

  • Also, the following following configurations are not supported by Nubitalk:
    • Multi-Part SDP
    • Silent suppression
    • Comfort noise
    • Separated VLANs for RTP and SIP. (The SIP and RTP should came through the same VLAN)

 

If you meet every condition, you can configure your own SIP Trunk in Nubitalk:

  1. From Nubitalk home window, go to account
  2. Inside Account, click in custom sip trunk. The sip trunk config window will open.
  3. Inside the sip trunk config, insert your SIP Trunk IP, Port and Domain and select if you are using TCP or UDP:

    SIP_Trunk.png

  4. Click Save to configure your SIP Trunk.

 

 

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