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How to bring your own carrier into Freshcaller? 

For inbound calls only

  1. Send the list of numbers you want to use in Freshcaller to support@freshcaller.com
  2. Once we receive the numbers, SIP domains will be generated to identify each number.
    For example, if your phone number is "xxx", your SIP address will be sip:user@xxx-sip.twilio.com. The SIP address ensures that the calls are forwarded to Freshcaller. Once received, you can route these calls to your agents/teams. 

  3. Once you receive the SIP domains, you can send the domains to your carrier to ensure that your carrier forwards the calls to the right domains. 

  4. Also, send the list of IP addresses that your carrier uses to forward the calls. This will be added to our whitelist.
  5. Ensure that your carrier supports G.711/μ-law and G.711/a-law codec for sending calls.


For inbound and outbound calls 

Follow all the steps stated above for routing inbound calls. In addition to that,

  1. Log in to your Freshcaller account.
  2. Go to Admin Settings > Numbers and click on Manage caller IDs.
  3. Click on the Add new caller Id option and add the phone number with the country code as caller ID. For example, +1xxxxxxxxxx.
  4. You will receive a call to verify the phone number. The verification call is mandatory to ensure that the external number belongs to you.
  5. Once your number is verified, you can use it as your caller ID.
  6. Send the details of SIP URI or IP provided by your carrier for each number to support@freshcaller.com. Your carrier may provide one or more SIP URIs for a single number. If there are multiple SIP URIs, specify the priority order provided by the carrier with a range of 0 to 65535.

Firewall Restrictions - Whitelisting IP

If you currently have a firewall or any network restrictions, ensure that you whitelist the following IPs. For more information, refer to — https://www.twilio.com/docs/voice/api/sip-interface#sip-connection-technical-specifications

If you face any further problems, reach out to support@freshcaller.com.

Region
Signaling IPs
Media IPs
North America Virginia

54.172.60.0 to 54.172.60.3


Ports: 5060 (UDP/TCP), 5061 (TLS)

54.172.60.0/23

34.203.250.0/23


Port Range: 10,000 to 20,000 (UDP)

North America Oregon

54.244.51.0 to 54.244.51.3


Ports: 5060 (UDP/TCP), 5061 (TLS)

54.244.51.0/24


Port Range: 10,000 to 20,000 (UDP)

Europe Ireland

54.171.127.192 to 54.171.127.195


Ports: 5060 (UDP/TCP), 5061 (TLS)

54.171.127.192/26

52.215.127.0/24 


Port Range: 10,000 to 20,000 (UDP)

Europe Frankfurt

35.156.191.128 to 35.156.191.131

Ports: 5060 (UDP/TCP), 5061 (TLS)

35.156.191.128/25 


Port Range: 10,000 to 20,000 (UDP) 

Asia Pacific Tokyo

54.65.63.192 to 54.65.63.195


Ports: 5060 (UDP/TCP), 5061 (TLS) 

54.65.63.192/26


Port Range: 10,000 to 20,000 (UDP)

Asia Pacific Singapore

54.169.127.128 to 54.169.127.131

Ports: 5060 (UDP/TCP), 5061 (TLS)

54.169.127.128/26

Port Range: 10,000 to 20,000 (UDP)

Asia Pacific Sydney

54.252.254.64 to 54.252.254.67


Ports: 5060 (UDP/TCP), 5061 (TLS)

54.252.254.64/26

Port Range: 10,000 to 20,000 (UDP) 

South America Sao Paulo

177.71.206.192 to 177.71.206.195


Ports: 5060 (UDP/TCP), 5061 (TLS) 

177.71.206.192/26


Port Range: 10,000 to 20,000 (UDP)