Side by side
Callcentric SIP Trunking vs Flowroute
Both stand on sip trunking providers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidExtensioniPhone+5
Callcentric offers pay-per-minute SIP trunking with three included channels and international business-number availability. Check device requirements and the lack of RTPS/SIPS support before choosing it.
Visit Callcentric SIP Trunking Free trial AndroidAPIiPhone+1
Flowroute combines telephony infrastructure, APIs, number management, routing, and fraud controls for communications operations. Pay-as-you-go billing and service-specific surcharges should be considered before deployment.
Visit FlowrouteThe facts
| Callcentric SIP Trunking | Flowroute | |
|---|---|---|
| Free plan | Yes | A free trial |
| Open source | Not published | No |
| Runs on | Android, Extension, iPhone, Linux, Mac, Self-hosted, Web, Windows | Android, API, iPhone, Web |
| Lowest paid plan | North America Basic: $1.95 a month | DID number: $1 a month |
| Plans published | 7 | 11 |
| Maker | Not published | Not published |
| Website | callcentric.com | flowroute.com |
| On sip trunking providers | #1 of 27 | #3 of 27 |
Callcentric SIP Trunking: what it does well
- No monthly plan fee or commitment.
- Calls to other Callcentric members are free.
- Business numbers span the USA, Canada, and 35+ countries.
- Three included channels, with unlimited maximum channels.
- Number porting and emergency calling are supported.
What to know first
- No minutes are included.
- Outbound calls have variable per-minute charges.
- RTPS and SIPS communications are unsupported.
- US/Canada toll-free numbers have setup and monthly fees.
Flowroute: what it does well
- SIP trunking, voice, messaging, fax, and forwarding
- HyperNetwork routing for inbound continuity
- Numbers API with E911 and CNAM automation
- Fraud controls and destination lists
- Free non-tiered support
What to know first
- Paid metered usage with varying rates
- SMS and MMS may incur extra fees
- Outbound rates vary by country
- No free plan
Alternatives to Callcentric SIP Trunking Alternatives to Flowroute The whole list