Outbound Voice Calls

The Cloudnumbering Outbound SIP service allows you to send voice traffic from your SIP platform or switch. 

The service is aimed primarily at wholesale interconnects and it is not advised to set up end users to interconnect directly with the Cloudnumbering service. A switch or PBX may be required to service the interconnect best. 

Outbound Endpoint

Send calls to the FQDN:

sip.cloudnumbering.com

It is advised strongly against using the IP address directly for connecting as the IP address are subject to change. The FQDN should be used to identify the IP address closest to you for use. 

Number Format

Calls should be sent with headers in E164 format. 

Allowed IPs

To enable sending of outbound calls the IP address from which calls will be originated requires allowing. This can be done through the Portal or through the API. To do this add an IP address under the Account Settings in Your IPs, for further guidance see the ALlowing IPs articles. 

Codecs and DTMF

Voice codecs supported:

G711ALAW

G711ULAW

DTMF support:

Out of band (RFC2833).

IP and Firewall Configuration

Cloudnumbering present the voice service from behind an FQDN. Robust firewalls will allow for configuration of the FQDN within the firewall directly and it will resolve the name when required. Other firewalls will not allow for this.

FQDN

sip.cloudnumbering.com

Current Signalling IPs

• 13.42.143.121

RTP Ports

1024 - 65534

• 188.166.149.80
• 188.166.171.119