SIP Configuration

This page describes the requirements to connect to Omilia Cloud Platform (OCP®) using SIP, such FQDNs, allowlists and codecs.

SIP URIs

To establish a connection with the Omilia Cloud Platform, direct your communications infrastructure to the previously agreed region-specific SIP Domain URIs.

Region	SIP Domain URI
US	us1-s.ocp.ai & us1w-s.ocp.ai
EU	eu1.sip.ocp.ai

The SIP Domain URI corresponds to several SRV records. All nodes support UDP, TCP and TLS. For the purpose of connecting to OCP, it is advised to use the Fully Qualified Domain Name (FQDN), rather than the IP addresses listed below.

Clients are expected to balance their calls across all the available SIP Endpoints for their provisioned region, whether by leveraging the SIP URIs mentioned above or the IP Addresses listed below.

Media Codec & Companding

Media codecs supported:

PCMU / G.711 μ-law
PCMA / G.711 A-law

DTMF

DTMF Method supported:

Inband
RFC2833

Encryption

OCP® supports encryption of SIP calls with SIP over TLS and encrypted RTP (SRTP).

SIP over TLS

For SIP over TLS, OCP® requires TLS 1.2, or later, and SRTP. OCP® does not support unencrypted media when signaling is protected using TLS.

Certificate Authority

Omilia uses the DigiCert Certificate Authority (CA) to sign our SIP Endpoint certificates. Your equipment must support root and intermediate certificates from this CA to enable SIP over TLS on OCP®.

SRTP & SRTCP

OCP® supports media encryption using SRTP and SRTCP with AES as the cipher.

IP Addresses

Please ensure that your firewall settings permit all SIP and media endpoints for your provisioned region.

OCP SIP & Media endpoints are scalable. This means that not all below mentioned IP addresses are permanently live. Endpoints are enabled as required.

US IPs

Endpoint (Signalling) IPs:

IP	FQDN	Ports
34.203.27.162	sip1.us1-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
54.166.50.108	sip2.us1-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
54.165.85.232	sip3.us1-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
52.24.18.229	sip1.us1w-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
52.89.29.122	sip2.us1w-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
54.191.152.114	sip3.us1w-s.ocp.ai	5060 (UDP/TCP) 5061 (TCP)

Media IPs:

IP	Region	Port Range
52.87.104.28	East	Port Range: 10,000 to 50,000 (UDP)
107.21.35.242	East	Port Range: 10,000 to 50,000 (UDP)
44.235.99.249	West	Port Range: 10,000 to 50,000 (UDP)
35.162.216.138	West	Port Range: 10,000 to 50,000 (UDP)
54.186.211.34	West	Port Range: 10,000 to 50,000 (UDP)

EU IPs

Endpoint (Signalling) IPs:

IP	FQDN	Ports
3.248.68.112	sip1.eu1.sip.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
54.170.191.190	sip2.eu1.sip.ocp.ai	5060 (UDP/TCP) 5061 (TCP)
63.32.81.139	sip3.eu1.sip.ocp.ai	5060 (UDP/TCP) 5061 (TCP)

Media IPs:

IP	Port Range
54.170.22.224	Port Range: 10,000 to 50,000 (UDP)
52.215.200.63	Port Range: 10,000 to 50,000 (UDP)
63.32.20.212	Port Range: 10,000 to 50,000 (UDP)

Maintenance

Any SIP Endpoint can be taken out of service for maintenance at any time. Existing calls will be allowed to complete gracefully. Any new INVITEs sent to this endpoint will either receive a 503 or no response, clients must repeat the call attempt using an alternative SIP Endpoint in the same, or a peer, region.