BulkVS SIP Trunking vs Callivex SIP Trunking
BulkVS SIP Trunking
bulkvs.com
Callivex SIP Trunking
callivex.comSide by side
| Figure | BulkVS SIP Trunking | Callivex SIP Trunking |
|---|---|---|
| Price from | $0.01/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · SIP Trunking Providers | 8.8 (#4) | 7.3 (#12) |
| Headquarters | Wilmington, Delaware, United States | London, United Kingdom |
| PBX compatibility | Its voice FAQ says the service works with any switch manufacturer that supports the SIP protocol. | Callivex says it integration-tests trunks with Asterisk, FreeSWITCH, FreePBX, 3CX, Cisco UCM, Microsoft Teams Direct Routing, and other listed systems. |
| Support | BulkVS lists phone support at 855-906-0901 and email support at [email protected]. | The network operations centre handles live faults 24 hours a day, while quotes, onboarding, and account changes are handled during UK business hours. |
| What it does | Bulk Solutions provides SIP origination for inbound calls and SIP termination for outbound calls. | Callivex provides bidirectional SIP trunks that connect PBXs, contact-center platforms, and softswitches to the public telephone network over IP. |
Plans
BulkVS SIP Trunking
- Inbound voiceFree
- Outbound callsFree
- Inbound toll free$0.01 a month
In their own words
BulkVS SIP Trunking
BulkVS SIP Trunking provides SIP origination for inbound calls and SIP termination for outbound calls. It supports SIP-compatible switches, including Asterisk, FreePBX, FreeSwitch, Cisco Call Manager, OpenSIPS, and Kamailio, and reaches thousands of rate centers across the United States and Canada. Outbound calling uses the North American 1+ dialing plan, with STIR/SHAKEN enabled. BulkVS lists outbound calls at $0.004 per minute and inbound bundles as low as $0.0003. It says charges are based on minutes used, with no SIP trunk channel charge and no set contract. The service also offers number porting, emergency calling, toll-free numbers, and a SOAP/XML API for provisioning. For toll-free origination, the company says it can switch routing during higher-level carrier outages. Related services include CNAM, Robocall Mitigation, E911, STIR/SHAKEN, and 8YY services. It is available through web and API, with phone and email support. Pricing is listed from $0.06/mo, and there is no free plan.
Callivex SIP Trunking
Callivex SIP Trunking provides bidirectional SIP trunks linking PBXs, contact-center platforms, and softswitches to the public telephone network over IP. Calls are billed for each connected second with five-decimal rate precision, without a 60-second minimum or six-second rounding. Accounts use prepaid balances with real-time usage visibility and no volume commitments. Trunks support IP authentication, SIP registration, or a hybrid configuration; the default IP-authentication setup allows up to eight source IPs. Callivex lists integration testing with Asterisk, FreeSWITCH, FreePBX, 3CX, Cisco UCM, and Microsoft Teams Direct Routing. Its network lists 218 termination destinations and inbound local, national, and toll-free numbers in 96 countries. Security features include TLS 1.2 or newer signaling, SRTP media, optional mutual TLS, source-IP enforcement, and SIP scanner mitigation. Fraud controls include country allowlists, spend caps, and anomaly detection. Pricing is on request, with custom rates and prepaid billing.