# Caller ID wrong or anonymous > Fix outgoing calls that show the wrong number, no number, or "private", and incoming calls that show no caller ID. - URL: https://kb.voipcloud.online/au/troubleshooting/caller-id-wrong-or-anonymous/ - Section: Troubleshooting - Type: troubleshooting - Applies to: All countries - Last reviewed: 2026-11-09 **On a free trial?** During the free trial, only your own hosted numbers can be used as caller ID. See [Your free trial](https://kb.voipcloud.online/au/getting-started/free-trial/). ## Symptom - People you call see the wrong number, "private", "no caller ID" or "unknown". - Or calls you receive, or calls forwarded to your mobile, show a number you don't expect. ## Quick checks 1. Make a test call to your own mobile from the affected user and note what it shows. 2. Check the user's **Default caller ID** in the [User](https://kb.voipcloud.online/au/pbx/accept-make-divert/user/) settings on the **PBX** tab. 3. If you use the Webphone, check which number is selected as your caller ID before dialling. ## Outgoing calls ### 1. No caller ID is set, or it's set to Anonymous With no caller ID, calls are anonymous. **Fix:** open the User, choose a number in **Default caller ID**, click **Save** and **Apply configuration**. Only numbers you've bought can be used. Toll-free and shared cost numbers can't be used as caller ID. ### 2. The Webphone is using a different number If the user has **Additional caller IDs**, they can choose which number to show in the Webphone. The last choice may still be selected. **Fix:** pick the right number under **Your caller ID displays as:** on the Webphone dialpad before dialling. To limit the choice, remove numbers from **Additional caller IDs** on the User. ### 3. A desk phone has its own caller ID A SIP device's own **Caller ID** (under **Advanced parameters** in **PBX** › **Devices**) is used when its user's caller ID is set to **Anonymous**. **Fix:** clear or change the device's caller ID if the user's caller ID is **Anonymous**. ### 4. The number was hidden for one call Dialling **1831** before a number hides your caller ID for that call. Dial without the prefix to show it. Built-in Australian [dial plans](https://kb.voipcloud.online/au/pbx/settings/dial-plans/), such as **Australia - VIC, TAS (03)**, include a rule for this prefix. ### 5. The caller ID name is wrong The caller ID name comes from the **Name** of the [Inbound number](https://kb.voipcloud.online/au/pbx/receive-calls/inbound-number/) object that contains the number. Rename that object, save and apply. Whether a name is shown at all depends on the phone and network of the person you call. ### 6. Calls through a SIP trunk show no number With **Keep originator's caller ID** on a [SIP trunk](https://kb.voipcloud.online/au/pbx/accept-make-divert/sip-trunk/), the trunk passes on the number your other PBX sends. If it sends none, the call is anonymous. **Fix:** set the caller ID in your other PBX, or choose a fixed **Caller ID** on the SIP trunk. ### 7. Numbers being ported You can use a number that's being ported as your caller ID once its porting request has been submitted. See [Prepare for porting cutover](https://kb.voipcloud.online/au/services/number-porting/prepare-for-porting-cutover/). ### 8. Your number shows as spam or scam If the number shows correctly but people's phones label it as spam, see [Number shows as spam](https://kb.voipcloud.online/au/security/number-shows-as-spam/). ## Incoming and forwarded calls - **Incoming calls show as anonymous:** the caller has hidden their number. To reject these calls, turn on **Block anonymous calls** in a [Blocklist](https://kb.voipcloud.online/au/pbx/protection/blocklist/) or the [Global blocklist](https://kb.voipcloud.online/au/pbx/settings/global-blocklist/). - **Forwarded calls on your mobile show the caller's number, and you can't tell they're business calls:** add [Set caller ID](https://kb.voipcloud.online/au/pbx/different/set-caller-id/) before the [Call diversion](https://kb.voipcloud.online/au/pbx/accept-make-divert/call-diversion/) to show one of your numbers instead. To show both where the call came from and who's calling, use [Caller ID prefix](https://kb.voipcloud.online/au/pbx/identifiers/caller-id-prefix/) for users on the PBX. - **Transferred calls on a Yealink phone show your colleague's number instead of the caller's:** see [Caller ID on transferred calls](https://kb.voipcloud.online/au/phones-and-apps/yealink/caller-id-on-transferred-calls/). ## When to contact support [Create a support ticket](https://kb.voipcloud.online/au/support/support-tickets/) with: - the user or device that made the call, and the number you expected to show; - the number called and what it showed (a screenshot from the receiving phone helps); - the date and time of a test call (with your time zone); - the device type (Webphone, desk phone model, softphone or SIP trunk).