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

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

Product: SecureXL
Version: R81.10 (EOS), R81.20, R82
Last Modified: 2026-05-25

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

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 starting from Take 10
Jumbo Hotfix Accumulator for R81.20 starting from Take 96
Jumbo Hotfix Accumulator for R81.10 starting from Take 173

If you choose not to upgrade, Check Point can supply a Hotfix. Contact Check Point 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 from the Security Management Server and Security Gateways involved in the case.

Hotfix installation instructions:

Refer to sk168597 - How to install a Hotfix.

NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

Article Properties

Access Level: General
Status: Approved by TAC
Date Created: 2024-10-07
Last Modified: 2026-05-25