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Calls: Add note near TURN limits clarifying that limits are per allocation (#19747)
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src/content/docs/calls/turn/faq.mdx

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Cloudflare TURN pricing is based on the data sent from the Cloudflare edge to the TURN client, as described in [RFC 8656 Figure 1](https://datatracker.ietf.org/doc/html/rfc8656#fig-turn-model). This means data sent from the TURN server to the TURN client and captures all data, including TURN overhead, following successful authentication.
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Pricing for Cloudflare Calls Serverless SFU and TURN services is $0.05 per GB of data used.
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Pricing for Cloudflare Calls TURN service is $0.05 per GB of data used.
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There is a free tier of 1,000 GB before any charges start. This free tier includes both Serverless SFU and TURN services. Cloudflare Calls billing appears as a single line item on your Cloudflare bill, covering both SFU and TURN.
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There is a free tier of 1,000 GB before any charges start. Cloudflare Calls billing appears as a single line item on your Cloudflare bill, covering both SFU and TURN.
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Traffic between Cloudflare Calls TURN and Cloudflare Calls SFU or Cloudflare Stream (WHIP/WHEP) does not incur any charges.
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src/content/docs/calls/turn/index.mdx

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Calls TURN service is available in every Cloudflare data center.
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When a client tries to connect to `turn.cloudflare.com`, it *automatically* connects to the Cloudflare location closest to them. We achieve this using anycast routing.
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When a client tries to connect to `turn.cloudflare.com`, it _automatically_ connects to the Cloudflare location closest to them. We achieve this using anycast routing.
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To learn more about the architecture that makes this possible, read this [technical deep-dive about Calls](https://blog.cloudflare.com/cloudflare-calls-anycast-webrtc).
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| OpenSSL Name | TLS 1.1 | TLS 1.2 | TLS 1.3 |
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| ----------------------------- | ------- | ------- | ------- |
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| AEAD-AES128-GCM-SHA256 | No | No | |
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| AEAD-AES256-GCM-SHA384 | No | No | |
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| AEAD-CHACHA20-POLY1305-SHA256 | No | No | |
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| ECDHE-ECDSA-AES128-GCM-SHA256 | No | | No |
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| ECDHE-RSA-AES128-GCM-SHA256 | No | | No |
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| ECDHE-RSA-AES128-SHA | | | No |
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| AES128-GCM-SHA256 | No | | No |
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| AES128-SHA | | | No |
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| AES256-SHA | | | No |
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| AEAD-AES128-GCM-SHA256 | No | No ||
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| AEAD-AES256-GCM-SHA384 | No | No ||
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| AEAD-CHACHA20-POLY1305-SHA256 | No | No ||
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| ECDHE-ECDSA-AES128-GCM-SHA256 | No || No |
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| ECDHE-RSA-AES128-GCM-SHA256 | No || No |
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| ECDHE-RSA-AES128-SHA ||| No |
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| AES128-GCM-SHA256 | No || No |
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| AES128-SHA ||| No |
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| AES256-SHA ||| No |
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## MTU
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Cloudflare Calls TURN service places limits on:
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* Unique IP address you can communicate with per relay allocation (>5 new IP/sec)
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* Packet rate outbound and inbound to the relay allocation (>5-10 kpps)
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* Data rate outbound and inbound to the relay allocation (>50-100 Mbps)
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- Unique IP address you can communicate with per relay allocation (>5 new IP/sec)
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- Packet rate outbound and inbound to the relay allocation (>5-10 kpps)
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- Data rate outbound and inbound to the relay allocation (>50-100 Mbps)
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A relay allocation often represents a single TURN client connection with the TURN server, not all connections for a single customer.
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:::note[Limits apply to each TURN allocation independently]
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Each limit is for a single TURN allocation (single TURN user) and not account wide. Same limit will apply to each user regardless of the number of unique TURN users.
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:::
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These limits are suitable for high-demand applications and also have burst rates higher than those documented above. Hitting these limits will result in packet drops.

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