SERVICE SPECIFIC TERMS
SENTRY®

Dated: December 15, 2024
Version 1.0

These Service Specific Terms for SENTRY® (“SENTRY Terms”) govern Customer’s use of the Services
described below and are in addition to and incorporate by reference the First Orion Terms of Service located
at https://firstorion.com/first-orion-customer-portal-terms-of-service/ (the “Terms”). Capitalized terms used
but not defined in these SENTRY Terms will have the respective meanings assigned to them in the Terms. If
you do not agree to these SENTRY Terms or any changes thereto, your sole remedy is to stop using the
Services. Use of the Services after any changes shall constitute acceptance of the updated SENTRY Terms.
First Orion’s SENTRY solution (the “Sentry Service” or “Services”) protects against illegal or unwanted
spoofing by allowing for the Authentication of calls, such that any call that has not been Authenticated will be
blocked.

1. Definitions. The following capitalized terms shall have the meaning set forth below or as set forth in
the Terms.

“A number” means an outbound calling number for Customer.

“Authenticated,” or derivations thereof, means a call that has been verified using Call Authentication.
“B number” means the called party number of a subscriber of a Distribution Partner.

“Billable Transaction” means any call made from an A number delivered to a B number using the Sentry
Service.

“Call Authentication,” or derivations thereof, means First Orion’s end-to-end authentication method that
pairs the A number with the B number at the time of the call in order to Authenticate the call using
application program interface (API), call routing configuration (SIP), or other industry standard protocols.
“Distribution” means the functionality or capability, whether provided by First Orion or a First Orion
Distribution Partner, that allows for use of the Sentry Service.

2. Distribution. Unless otherwise set forth in the Order, all available Distribution will be enabled for
Customers’ use of the Sentry Service.

3. Registration and Certification. As a condition to the Services to be provided hereunder, all
Customers must have (i) completed the Registration process for the Customer and each A number(s) being
used to make calls using the Sentry Service and (ii) passed the Registration and Certification processes. See
the Service Specific Terms for Business Registration and Business Certification.

4. Services Description

1. The Sentry Service allows Customer to block calls that have not been Authenticated before the
   call terminates in the Distribution Partner network. Prior to initiating a call, an Authentication request will be
   used to submit all required data, including the A number and B number pair which creates a unique hashed
   key. A Time to Live (TTL) may also be submitted in order to control how long the hashed key is allowed to
   remain active. Customer may configure the value of the TTL, subject to the constraints established by First
   Orion for the Sentry Service (as modified from time to time by First Orion). All calls made from the A
   number that are not Authenticated will be blocked and not delivered. As a result, only calls to the B numbers
   submitted with the Authentication request will be delivered from the associated A numbers during the
   designated time frame.
2. First Orion will only block calls terminating in the Distribution Partner network based on the
   information included in the Authentication request or in the event a call is made from an A number
   designated to receive the Sentry Service where no Authentication request has been received by First Orion.
   Customer acknowledges and agrees that (i) Customer is solely responsible for the accuracy of the
   information submitted in the Authorization request, and First Orion has no liability related to the delivery of,
   or failure to deliver, calls made by or on behalf of Customer based on inaccurate information submitted in the
   Authorization request, and (ii) for A numbers Customer has designated for use with the Sentry Service, in the
   event a call is made from such numbers without an Authentication request (including calls for which no
   Authentication request is utilized), such calls terminating in the Distribution Partner network will be blocked.
3. Disclaimer. Notwithstanding subsections (a) and (b) above, in some instances the applicable
   Distribution Partner will determine whether a call that has not been Authenticated will be blocked.
4. Fees. For use of the Sentry Service, Customer will pay First Orion a fee per Billable Transaction
   as set forth in the applicable Order. In addition, First Orion may charge Customer a fee of $1.00 per month
   for each A number manually vetted as described in Section 6(b) of these SENTRY Terms.

5. First Orion Responsibilities

1. Training and Instructions. First Orion will make available reasonable education and training in
   order to facilitate Customer’s use of the Services which may be provided through online tutorials and/or
   instructions. Information related to the use of the Services is available on the Customer Portal.
2. Support Services. Customer support will be available Monday – Friday from 8:00 a.m. – 5:00 p.m. Central Standard Time via Zendesk on the Customer Portal or at enterprisesupport@firstorion.com.
3. Reporting. Standard reporting will be made available in the Customer Portal at no additional charge

6. Vetting. Provision of the Sentry Service to Customer is subject to initial and ongoing enterprise and A number vetting by First Orion.

1. First Orion provides automated vetting through the options set forth below. First Orion may
   modify its automated vetting options from time to time in its sole discretion.
   1. Automated Telephone Number (“TN”) Verification Circuit: First Orion will initiate a phone call to
      each A number provided by Customer. Customer will respond with a secondary event within a
      predetermined time window proving receipt of the phone call. This method requires Customer to configure
      its calling platform to listen and respond to these events.
   2. Automated Call Center: First Orion’s automated call center will initiate a phone call to the A
      numbers provided by Customer. The designated A numbers must be able to receive a phone call, interact
      with an Interactive Voice Response (IVR) to confirm TN registration, and vocalize the name of the registered
      business. First Orion will record all activity during each interaction for verification purposes.
   3. Outbound Calling TNs Only: First Orion will provide designated TNs to receive a call from the A
      numbers provided by Customer. Customer will place calls to a designated TN provided by First Orion.
2. In the event Customer’s A numbers cannot be vetted in an automated manner, First Orion may, at
   Customer’s request, vet the A numbers manually.

7. Service Interruptions. First Orion may suspend the Sentry Service as to any Customer or any A
number if either Customer or the A number fails to satisfy First Orion’s ongoing verification requirements.
Further, First Orion may suspend the Sentry Service if First Orion reasonably believes that A numbers are
being blocked in a manner not intended by Customer or outside of the scope of the Sentry Service. First
Orion will provide Customer with notice of such suspension, including the reasons for suspension and any
required corrective actions as soon as reasonably practicable under the circumstances.

8. Additional Use Restrictions. First Orion may impose additional restrictions and/or prohibitions on
the use of the Sentry Service to the extent they are imposed by a Distribution Partner or applicable law. First
Orion will notify Customer of any such restrictions and/or prohibitions as soon as reasonably possible after
receiving notice thereof. Customer agrees to comply with such restrictions.