Provider Setup

Configure SipLine with OVH VoIP

Connect SipLine to your OVH Telecom VoIP line. This guide covers finding your SIP credentials in the OVH Manager and configuring your account for reliable calls.

8 min read

Prerequisites

An active OVH VoIP line (VoIP plan from OVH Telecom)
SipLine installed on your computer
Access to the OVH Manager (https://www.ovhtelecom.fr/manager/)

1Log Into the OVH Manager
2Find Your SIP Credentials
3Note the SIP Server Details
4Configure the Account in SipLine
5Enable the G.711a Codec
6Test Your Connection

Log Into the OVH Manager

Go to OVH Telecom Manager and sign in with your OVH account credentials. Navigate to the Telephony section in the left sidebar. You will see your VoIP line group listed here.

Make sure you are using the Telecom Manager, not the general OVH Cloud Manager — VoIP settings are only available in the Telecom panel.

Find Your SIP Credentials

Click on your VoIP line group, then select your SIP line (it starts with 0033 followed by your phone number). Go to General Settings to see your SIP username, which is your full line number in international format (e.g., 0033XXXXXXXXX). Click Change SIP password if you need to reset it.

Changing your SIP password will disconnect any device currently registered with the old password.

Note the SIP Server Details

The OVH SIP server address is sip.ovh.net and the port is 5060 (UDP). These settings are the same for all OVH VoIP lines. No SIP proxy or outbound proxy is required for standard OVH lines.

Configure the Account in SipLine

Open SipLine and go to Settings > SIP Accounts > Add Account. Enter the following: SIP Server: sip.ovh.net, Port: 5060, Transport: UDP, Username: 0033XXXXXXXXX (your full line number), Password: the SIP password from OVH Manager. Click Save.

SipLine uses local port 15060 by default to avoid conflicts with other SIP software. The remote server port (5060) is separate from SipLine's local listening port. If your OVH line uses a trunk configuration, the username may differ — check the OVH Manager for the exact SIP username.

Enable the G.711a Codec

In SipLine's account settings, go to the Codecs tab and make sure G.711a (PCMA) is enabled and set as the preferred codec. OVH primarily uses G.711a for optimal compatibility. You can also enable G.711u (PCMU) as a fallback.

Disabling codecs you do not need can speed up call setup time by reducing SDP negotiation overhead.

Test Your Connection

After saving, the account status should change to Registered within a few seconds. Make a test call to verify audio works in both directions. If registration fails, double-check your username and password in the OVH Manager.

If you see a 403 Forbidden error, your SIP password may be incorrect. Generate a new one in the OVH Manager and try again.

Frequently Asked Questions

Where do I find my OVH SIP password?

In the OVH Telecom Manager, go to Telephony > Your Line > General Settings and click Change SIP password. OVH does not display the existing password — you must generate a new one.

What is the difference between an OVH trunk and a SIP line?

An OVH SIP line supports a single simultaneous call and registers with one set of credentials. An OVH trunk supports multiple simultaneous calls using a single registration, and is designed for PBX systems or high-volume use. Both work with SipLine, but trunk credentials may differ from standard line credentials.

Can I use multiple OVH lines in SipLine?

Yes. SipLine supports multiple SIP accounts. Go to Settings > SIP Accounts and add each OVH line as a separate account. Each line has its own credentials and will register independently.

Registration keeps failing — what should I check?

Verify the following: (1) your SIP username is the full international number starting with 0033, (2) you generated a fresh SIP password in the OVH Manager, (3) the server is sip.ovh.net on port 5060/UDP, (4) your firewall allows outbound UDP traffic on port 5060 and the RTP port range (typically 10000–20000). You can also use SipLine's built-in Network Diagnostics tool (in the Network settings page) to identify connectivity issues.

Does OVH support encrypted calls (SRTP/TLS)?

OVH VoIP lines use standard UDP transport on port 5060 and do not natively support TLS or SRTP. If you need encrypted calls, consider routing through a SIP proxy that adds encryption, or contact OVH support for the latest options on your plan.