> Source: [sk181467](https://support.checkpoint.com/results/sk/sk181467)

# sk181467 - Cannot make voice or video calls with Microsoft Teams, VoIP traffic is dropped

| Property | Value |
|----------|-------|
| Solution ID | sk181467 |
| Date Created | 2023-09-20 |
| Last Modified | 2026-05-04 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20, R81.10 (EOS), R81 (EOS) |

## Symptoms

- * Voice and video calls with Microsoft Teams fail.

* VoIP traffic is dropped. The output of the "`fw ctl zdebug drop`" command contains these lines:

  ```
  
  [1_02]@;222 ...;[kern];[tid_0];[SIM-210 ...];pkt_handle_stateless_checks: dropping due to dos_pkt_should_drop(), conn: ;
  
  [1_02]@;222 ...;[kern];[tid_0];[SIM-210 ...];do_packet_finish: SIMPKT_IN_DROP vsid=0, conn:;
  ```

## Cause

SecureXL Drop Templates dropped the VoIP traffic.

<br />

## Solution

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