VOS3000 Display Caller ID Forwarding: Flexible Number Presentation Control
๐ When a call is forwarded from your VOS3000 phone extension to another number, what does the called party see on their display? Do they see your original caller’s number, or do they see your extension’s number? The answer is controlled by the VOS3000 display caller ID forwarding settings โ a set of per-phone and system-level configurations that determine which number is presented in three distinct call scenarios: normal forwarding, normal call transfer, and attended (ask) call transfer. ๐ฏ
๐ According to the official VOS3000 V2.1.9.07 Manual, Section 2.5.2 (Supplementary Service), the display and forwarding number presentation offers three options for each scenario: Default (use the system parameter setting), Original caller (display the caller’s number), and Local number (display the phone’s own number). These settings interact with system-level parameters like SS_CALL_FORWARD_USING_ORIGINAL_CALLER, SS_CALL_TRANSFER_NORMAL_DISPLAY, and SS_CALL_TRANSFER_ASK_DISPLAY. ๐
๐ง All data in this guide is sourced exclusively from the official VOS3000 V2.1.9.07 Manual, Section 2.5.2 โ no fabricated values, no guesswork. For expert assistance with your VOS3000 deployment, contact us on WhatsApp at +8801911119966. ๐ก
Table of Contents
๐ What Is VOS3000 Display Caller ID Forwarding?
โฑ๏ธ The VOS3000 display caller ID forwarding settings control which telephone number is presented to the called party in different call scenarios. When a call is forwarded or transferred, there are always at least two parties involved: the original caller and the forwarding phone. The question is: which number should appear on the final called party’s display? ๐ VOS3000 Display Caller ID Forwarding
๐ According to the official VOS3000 V2.1.9.07 Manual, Section 2.5.2:
| Setting | Options | Manual Description |
|---|---|---|
| ๐ Forward display number | Default / Original caller / Local number | Controls which number is displayed when call is forwarded |
| ๐ Normal call transfer display | Default / Original caller / Local number | Controls which number is displayed on normal transfer |
| ๐ Ask call transfer display | Default / Original caller / Local number | Controls which number is displayed on attended transfer |
| ๐ Display caller id | On / Off | Display the caller’s ID โ controls whether caller ID is shown at all |
๐ก Key insight: The VOS3000 manual provides three display options for each scenario. “Default” means the system-level parameter is used โ this allows administrators to set a global policy while still permitting per-phone overrides. “Original caller” passes through the calling party’s number (the person who initiated the call). “Local number” substitutes the forwarding phone’s own number, effectively hiding the original caller’s identity. ๐
๐ฏ Why VOS3000 Display Caller ID Forwarding Matters
โ ๏ธ Incorrect caller ID presentation on forwarded calls causes several problems:
- ๐ Missed callbacks: If a forwarded call shows the forwarding phone’s number instead of the original caller, the called party cannot call the original person back directly
- ๐ข Privacy concerns: Some callers do not want their number passed through to third parties when calls are forwarded โ their number should remain private
- ๐ Brand identity: Businesses want their company number (not the employee’s personal extension) displayed when calls are forwarded to external parties
- ๐ Caller confusion: When the called party sees an unfamiliar number, they may not answer โ reducing call completion rates for forwarded calls
- ๐ก๏ธ Regulatory compliance: Some jurisdictions have strict rules about caller ID presentation on forwarded and transferred calls
โ๏ธ Forward Display Number โ Three Options Explained
๐ The VOS3000 display caller ID forwarding “Forward display number” setting controls what the final called party sees when a call is forwarded from this phone. The VOS3000 manual provides three options, each with distinct behavior: ๐ก VOS3000 Display Caller ID Forwarding
| Option | Manual Description | What the Called Party Sees |
|---|---|---|
| ๐ Default | Use “Softswitch management > Additional settings > System parameter > SS_CALL_FORWARD_USING_ORIGINAL_CALLER” | Depends on the system parameter โ either Original caller or Local number |
| ๐ Original caller | Display caller’s number | The original caller’s number is shown (e.g., the external caller who dialed in) |
| ๐ Local number | Display the phone’s number | The forwarding phone’s own number is shown (hides the original caller’s identity) |
๐ Forward Display Number โ Example Scenario:
External Caller (Alice): +1-555-0101
โ
โโโ Calls Phone Extension 2001 (Bob)
โ
โโโ Bob's phone forwards to Extension 3001 (Carol)
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
โ What does Carol see on her display? โ
โ โ
โ Option: Original caller โ Carol sees +1-555-0101 (Alice) โ
โ Option: Local number โ Carol sees 2001 (Bob's extension) โ
โ Option: Default โ Depends on SS_CALL_FORWARD setting โ
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
๐ Practical impact: If you choose “Original caller,” Carol can call Alice back directly because she sees Alice’s number. If you choose “Local number,” Carol sees Bob’s extension and can call Bob back โ but she does not know Alice’s number. For help choosing the right setting, reach us on WhatsApp at +8801911119966. ๐ฑ VOS3000 Display Caller ID Forwarding
๐ Call Transfer Display โ Normal and Ask Transfer
๐ In addition to forward display number, VOS3000 provides separate display settings for call transfers. The VOS3000 manual distinguishes between “Normal call transfer display” and “Ask call transfer display,” each with the same three options (Default, Original caller, Local number). ๐ ๏ธ
| Setting | System Parameter (when Default) | Description |
|---|---|---|
| Forward display number | SS_CALL_FORWARD_USING_ORIGINAL_CALLER | Controls caller ID on forwarded calls (call forwarding types) |
| Normal call transfer display | SS_CALL_TRANSFER_NORMAL_DISPLAY | Controls caller ID on blind/immediate transfers (*1, *9 DTMF codes) |
| Ask call transfer display | SS_CALL_TRANSFER_ASK_DISPLAY | Controls caller ID on attended/consultation transfers (*2, *3 DTMF codes) |
๐ก Why separate settings? The VOS3000 manual provides distinct display options for each transfer type because the business requirements may differ. For blind transfers (normal), you might want to show the original caller so the recipient knows who is calling. For attended transfers (ask), where the transferring party speaks with the recipient first, you might prefer to show the local number since the recipient already knows the context. For more on transfer DTMF codes, see our VOS3000 account billing reference. ๐
๐ System Parameters for Default Caller ID Behavior
๐ When the per-phone display setting is set to “Default,” VOS3000 uses the corresponding system parameter to determine the caller ID presentation. These system parameters are configured in the softswitch management additional settings: ๐ ๏ธ VOS3000 Display Caller ID Forwarding
| Parameter | Controls | Location |
|---|---|---|
| SS_CALL_FORWARD_USING_ORIGINAL_CALLER | Default behavior for Forward display number | Softswitch management > Additional settings > System parameter |
| SS_CALL_TRANSFER_NORMAL_DISPLAY | Default behavior for Normal call transfer display | Softswitch management > Additional settings > System parameter |
| SS_CALL_TRANSFER_ASK_DISPLAY | Default behavior for Ask call transfer display | Softswitch management > Additional settings > System parameter |
๐ Best practice: Set the system parameters to your organization’s default preference, then use per-phone overrides for specific extensions that need different behavior. This provides a global policy with per-exception flexibility. For more on system parameters, see our VOS3000 parameter description guide. ๐
๐ก๏ธ Common VOS3000 Display Caller ID Problems and Solutions
โ Problem 1: Forwarded Calls Show Wrong Number
๐ Symptom: When a call is forwarded from Phone A to Phone B, Phone B’s display shows Phone A’s extension number instead of the original external caller’s number.
๐ก Cause: The “Forward display number” setting on Phone A is set to “Local number” (or the Default system parameter is configured for local number display).
โ Solutions:
- ๐ Change the “Forward display number” setting on Phone A to “Original caller”
- ๐ง If set to “Default,” change the SS_CALL_FORWARD_USING_ORIGINAL_CALLER system parameter
- ๐ Verify the change by testing a forwarded call and checking the called party’s display
โ Problem 2: Caller ID Privacy Breach on Transferred Calls
๐ Symptom: When a call is transferred to an external number, the original caller’s number is displayed to the external party โ potentially violating privacy expectations.
๐ก Cause: The transfer display setting is configured to “Original caller,” which passes the original caller’s number through to the transferred destination, even if that destination is external. VOS3000 Display Caller ID Forwarding
โ Solutions:
- ๐ Change the transfer display setting to “Local number” for phones that transfer calls to external parties
- ๐ Configure “Normal call transfer display” and “Ask call transfer display” per your privacy requirements
- ๐ Use “Local number” for external transfers and “Original caller” for internal transfers
โ Problem 3: Display Caller ID Toggle Not Working
๐ Symptom: The “Display caller id” supplementary service is enabled/disabled, but caller ID presentation does not change โ callers always see the number or never see it.
๐ก Cause: The “Display caller id” setting controls whether the phone’s caller ID is shown at all. If set to Off, the phone’s number should not be presented. However, some SIP providers and gateway configurations may override this setting at the network level.
โ Solutions:
- ๐ Verify the “Display caller id” checkbox is properly set in Supplementary service
- ๐ Check if the mapping gateway or routing gateway has caller ID override settings
- ๐ Test with an external call to see if the carrier is overriding the caller ID presentation
๐ VOS3000 Display Caller ID Configuration Checklist
โ Use this checklist when configuring caller ID display settings:
| Check | Action | Status |
|---|---|---|
| ๐ 1 | Set system parameters (SS_CALL_FORWARD_USING_ORIGINAL_CALLER, etc.) to your organization’s default | โ |
| ๐ 2 | Configure per-phone “Forward display number” based on business requirements | โ |
| ๐ 3 | Configure “Normal call transfer display” and “Ask call transfer display” per phone | โ |
| ๐ 4 | Enable “Display caller id” supplementary service where caller ID should be shown | โ |
| ๐ 5 | Test forwarded calls to verify the correct number is displayed | โ |
| ๐ 6 | Test transferred calls (both blind and attended) to verify display behavior | โ |
๐ For expert guidance on VOS3000 caller ID configuration, reach us on WhatsApp at +8801911119966. ๐ก VOS3000 Display Caller ID Forwarding
โ Frequently Asked Questions
โ What is VOS3000 display caller ID forwarding?
๐ VOS3000 display caller ID forwarding is a set of per-phone settings that control which telephone number is presented to the called party when calls are forwarded or transferred. According to the VOS3000 V2.1.9.07 Manual (Section 2.5.2), there are three display options for each scenario: Default (use system parameter), Original caller (show the caller’s number), and Local number (show the phone’s own number). These settings apply to forwarded calls, blind transfers, and attended transfers independently. ๐
โ What is the difference between Original caller and Local number?
๐ “Original caller” displays the number of the person who originally initiated the call โ the external caller’s number is passed through to the forwarded/transfered destination. “Local number” displays the forwarding phone’s own number instead โ the original caller’s identity is hidden and replaced with the forwarding extension’s number. For example, if Alice (+1-555-0101) calls Bob (ext 2001) and Bob forwards to Carol (ext 3001): Original caller โ Carol sees +1-555-0101; Local number โ Carol sees 2001. ๐ก
โ What does the Default option do?
๐ The “Default” option tells VOS3000 to use the corresponding system-level parameter instead of a per-phone setting. For Forward display number, the Default uses SS_CALL_FORWARD_USING_ORIGINAL_CALLER. For Normal call transfer display, it uses SS_CALL_TRANSFER_NORMAL_DISPLAY. For Ask call transfer display, it uses SS_CALL_TRANSFER_ASK_DISPLAY. These parameters are located at “Softswitch management > Additional settings > System parameter.” Default provides a global policy that can be overridden on individual phones when needed. ๐ง
โ How do I hide the original caller’s number on forwarded calls?
๐ To hide the original caller’s number when calls are forwarded, set the “Forward display number” to “Local number” on the phone that is forwarding calls. This will display the forwarding phone’s own number instead of the original caller’s number to the called party. Alternatively, set the system parameter SS_CALL_FORWARD_USING_ORIGINAL_CALLER to show the local number by default, and it will apply to all phones using the “Default” option. ๐ก๏ธ
โ Does Display caller ID affect outbound calls?
๐ Yes. The “Display caller id” supplementary service controls whether the phone’s caller ID is shown to the called party on outbound calls. According to the VOS3000 manual, this setting “display the caller’s ID” โ when enabled, the phone’s number is presented to the called party. When disabled, the caller ID may be suppressed (depending on the carrier and SIP provider configuration). The “Forward display number” and “Call transfer display” settings are specifically for forwarded and transferred calls, not for direct outbound calls. ๐
โ Can I set different caller ID display for internal vs external forwarding?
๐ข The per-phone settings in VOS3000 apply to all forwarding/transfer scenarios for that phone โ there is no built-in distinction between internal and external forwarding destinations in the display settings. However, you can use creative workarounds: configure the system parameter for your most common scenario (e.g., internal forwarding), then override individual phones that forward to external numbers with the “Local number” option to protect caller privacy on external transfers. For more on call forwarding types, see our comprehensive guide. ๐ก
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