1. What is BYOC? 

Bring Your Own Carrier (BYOC) is an innovative module that allows you to select a phone number/telecom carrier that aligns with your business needs and configure it into the Zoho Voice. With BYOC, you can keep your current phone numbers from your existing carrier, eliminating the need to port them when switching to Zoho Voice.

2. What is SIP trunk?

Session Initiation Protocol (SIP) is a digital technology that enables making and receiving calls, along with other forms of communication, over the internet. It provides guidelines for managing the call and determining its origin, destination, components, and status.

The term "trunk" refers to virtual link between your PBX and the standard phone network (the PSTN), that facilitate internet-based calls to any phone number. In addition to voice calls, SIP trunks also support multimedia communication, such as voice, video, and messaging services. 

In BYOC form, SIP Trunks are a list of publicly routable, SIP-signaling Fully Qualified Domain Names (FQDNs), hostnames ,or IP addresses belonging to your current carrier. Zoho Voice uses these trunks to send calls.

3.What is IP ACL?

An IP Access Control List (ACL) is a collection of rules designed to manage network traffic by filtering based on factors such as which IP addresses are allowed or blocked,  protocols, and more. Typically applied to network devices like routers and firewalls, ACLs are used to define which IP addresses are allowed, control traffic flow, strengthen security, and regulate access to resources according to defined criteria.

In BYOC form, IP ACL Configurations section, defines the IP addresses of your current carrier through which the inbound traffics are originated. Only the mentioned IPs are permitted access for inbound traffics.

4. Can I bring numbers from multiple carriers?

Yes, you can set up multiple BYOC trunks with different carriers.

5. Is secure communication supported in BYOC?

Yes, selecting TLS as the trunk transport protocol enables secure trunks with SIP TLS (SIPS) and Secure RTP (SRTP), ensuring encrypted signalling and media transmission.

6. Is there any update to be done at carrier end?

Yes, below are the details that need to be configured on your carrier side as you use Zoho Voice.

Zoho Voice's SIP Trunk URI:

Trunk URI to which calls have to be forwarded from your carrier side,

For US DC:

• sip.zohovoice.com:5060 - TCP/UDP

• sip.zohovoice.com:5061 - TLS

For EU DC:

• eu-sip.zohovoice.com:5060 - TCP/UDP

• eu-sip.zohovoice.com:5061 - TLS

 ZohoVoice's Call Origination IPs:

IP(s) to be allow-list at your carrier's side to get calls from Zoho Voice,

For US DC:

• 8.33.38.218

• 8.33.38.222

• 8.47.10.219

For EU DC:

• 139.162.137.101

• 139.162.165.201

7. Is SMS service supported in BYOC?

No, SMS is not supported in BYOC. You can perform inbound and outbound calling using BYOC trunk.

8. Are there any rental charges for the numbers?

No, there are no rental charges. You only need to pay one time fee for the BYOC trunk set-up and applicable call charges.

9. What verifications are required for BYOC configuration?  

To verify your BYOC setup, we will:

• Check the number purchase invoice from your existing carrier to confirm number ownership.

• Verify your number via OTP authentication.