# Bring Your Own Carrier – Premises Peering (BYOC-P)

As an alternative to cloud peering, Zoom Phone also supports a Bring Your Own Carrier (BYOC) premises peering (BYOC-P) service model, where a business connects their on-premises hardware—specifically, a session border controller (SBC) connected to a carrier—with Zoom Phone's cloud PBX system.

With this service model, businesses continue to have access to Zoom Phone's cloud PBX features, like Call Queues, Auto Receptionists, number assignment, etc., while the underlying PSTN connections are handled by the company's chosen provider. This service model is nearly identical to Zoom Phone's Cloud Peering model (BYOC-C), with the exception that the customer provides and maintains their own supported SBC to peer with Zoom Phone's data centers, instead of the underlying carrier.

#### <mark style="color:blue;">With premises peering, service areas are determined by the customer's chosen telephony service provider</mark>

Unlike the Zoom Phone Native and cloud peering services, which contain general lists of serviceable countries and territories, premises peering service areas are determined by the customer's chosen telephony service provider. Businesses are encouraged to consult with their chosen telephony provider to ensure their coverage will meet their business needs.

#### <mark style="color:blue;">Zoom Phone Premises Peering Network Design</mark>

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXc2018WCwHe7w2s1oAObEi4Hy6Xb1u-dbbDgFEJ8Qf6rjWVsql8AkHW2ISWhwHV3K3sVnU7pbQbbL_A4NNwvyVw_twe3uWf6wVdyJ_ZAvvu3tsP956AuuupoOnTudM5HwUvZrGMCWQ709AE_8KH8w?key=gORaE6vjeZ6i7Y4PGyLKfw" alt=""><figcaption><p>Diagram of Zoom Phone Premises Peering Network Design.</p></figcaption></figure>

{% hint style="info" %}
**Note**

Zoom Phone endpoints always initiate connectivity into Zoom data centers; however, BYOC-P SBCs require bi-directional connectivity. If you have questions about port connectivity and scope, speak with your Zoom technical account team for more information on connectivity options.
{% endhint %}


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