---
title: "TLS Details"
slug: "tls-details"
updated: 2025-08-26T06:11:40Z
published: 2025-08-26T06:11:40Z
canonical: "kb.connecttoteams.com/tls-details"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.connecttoteams.com/llms.txt
> Use this file to discover all available pages before exploring further.

# TLS Details

Our Edge Proxies support SIP-over-TLS transport, sometimes known as "best-effort TLS", as described in RFC 5630, Section 3.1.3 and elsewhere. We do not support SIPS or SIPS URIs (end-to-end TLS).

## **DNS Records**

We support SRV and NAPTR record lookup to discover _sip._tls.your-domain.com host and port records, if the SRV method is selected in the PBX or Trunk configuration.

## **Encryption Standards**

We only support TLS 1.2 (and above) using the following cipher suites:

```plaintext
ECDHE-RSA-AES256-GCM-SHA384
ECDHE-RSA-AES256-SHA384
ECDHE-RSA-AES256-SHA
AES256-GCM-SHA384
AES256-SHA256
AES256-SHA
ECDHE-RSA-AES128-GCM-SHA256
ECDHE-RSA-AES128-SHA256
ECDHE-RSA-AES128-SHA
AES128-GCM-SHA256
AES128-SHA256
AES128-SHA
```