# View SIP registration credentials

View the username, password, and registration endpoints generated by DIDWW
for an inbound SIP trunk that uses **Dynamic Registration**. Configure these
values on your SIP endpoint so it can authenticate its SIP `REGISTER`
requests. DIDWW then delivers incoming calls to the Contact address supplied
by the registered endpoint.

## Before you begin

- An active DIDWW account is required. [Sign in to DIDWW](https://my.didww.com/users/sign_in).
- An existing SIP trunk using **Dynamic Registration** is required. See
  [Create a SIP trunk](create-sip-trunk.html) if you need to create one.

## Step 1: Open the trunk details

1. In the DIDWW User Panel, go to **Voice > Inbound Trunks**.
2. Locate the Dynamic Registration trunk and click its name.

[![Inbound Trunks page with a Dynamic Registration SIP trunk name highlighted](../../../../_images/credentials11.png)](../../../../_images/credentials11.png)


**Fig. 1.** Open the Dynamic Registration trunk details

## Step 2: Copy the registration details

1. On the **View Inbound SIP Trunk** page, select **General**.
2. Copy the **Username**.
3. Use the copy icon beside **Password** to copy it. Click the eye icon if
   you need to reveal the password.
4. Use one of the hostnames listed under **Registration Endpoints** as the
   registrar on your SIP endpoint.

Important

The same credentials can be used by up to 10 simultaneously registered endpoints.

Field definitions are listed under [Post-creation registration
fields](../sip-trunk-settings-reference.html#inbound-sip-registration-details-fields). For registrar hostnames, location
selection, and IP addresses, see [SIP
Registrars](../sip-connectivity-reference.html#inbound-sip-connectivity-registrars).

[![General tab showing Username, masked Password, and Registration Endpoints for a Dynamic Registration trunk](../../../../_images/credentials2.png)](../../../../_images/credentials2.png)


**Fig. 2.** View the registration credentials and endpoints

## Related resources

- [SIP trunk settings reference](../sip-trunk-settings-reference.html) -
  Look up the Dynamic Registration settings and generated fields.
- [SIP connectivity reference](../sip-connectivity-reference.html) - Check
  registrar addresses, supported transports, and authentication methods.
- [Manage SIP trunks](manage-sip-trunks.html) - View or update an existing
  trunk's configuration.

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