> Source: [sk182730](https://support.checkpoint.com/results/sk/sk182730)

# sk182730 - No audio during the first five seconds of a VoIP call when using SecureXL

| Property | Value |
|----------|-------|
| Solution ID | sk182730 |
| Date Created | 2024-10-07 |
| Last Modified | 2026-05-25 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82, R81.20, R81.10 (EOS) |

## Symptoms

- * There is no audio during the first five seconds of each VoIP RTP call (or the other side hears the audio after a delay of five seconds) when using SecureXL.

  This applies to one-sided audio and no audio scenarios.
* Configuring SecureXL to always forward the affected connections (F2F) to the Security Gateway does not resolve the issue.

* Configuring the value **0** for these kernel parameters resolves the issue:

  * 'cphwd_routing_interval' from the default '5' to '0':


    `fw ctl set int cphwd_routing_interval 0`
  * 'sim_routing_interval' from the default '5000' to '0':

    `fw ctl set int sim_routing_interval 0 -a`
* Output of the `# fw ctl get int cphwd_routing_interval` command:

  * `cphwd_routing_interval = 5`

  Output of the `# fw ctl get int sim_routing_interval -a` command:
  * `FW: Get operation failed: failed to get parameter sim_routing_interval`
  * `PPAK 0: sim_routing_interval = 5000`

  <br />

  Note: You can ignore `FW: Get operation failed: failed to get parameter sim_routing_interval`, as this is not a FW parameter. This is a parameter for SecureXL (PPAK as seen in the output) and you must include the "-a" at the end of the second command.

## Cause

Routing calculation in SecureXL takes five seconds for the data connections.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 10
* [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 96
* [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 173

If you choose not to upgrade, Check Point can supply a **Hotfix** . [Contact Check Point Support](https://www.checkpoint.com/support-services/.contact-support/) to get a Hotfix for this issue.  
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.  
For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168597).

<br />

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