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DIDWW Two-way SIP Trunking
What DIDWW Two-way SIP Trunking is
DIDWW Two-way SIP Trunking connects a business PBX to local telephone networks over the internet using SIP instead of physical phone lines. DIDWW says the service is available in 241 countries and regions. Local trunking supports outbound calls with DIDWW numbers, guaranteed caller ID, local dialing, and access to emergency services, short codes and toll-free numbers. International A–Z termination offers global premium routes and can use DIDWW or third-party phone numbers. Security options include per-trunk encryption, DIGEST and IP authentication, VPN interconnection, and TLS/SRTP. DIDWW reports 99.998% network uptime and describes its network as geo-redundant with continuous in-house monitoring. Its API supports programmatic management of phone-number inventory, orders and service configurations. Setup guides cover systems such as Microsoft Teams Direct Routing, 3CX, Asterisk and Avaya. The service is aimed at operators and enterprises, including IoT providers and contact centers. It has no free plan or trial; a $30 minimum account balance is required, and sales must enable outbound termination.
Who it suits
It suits operators and enterprises that need internet-based PBX connectivity, including contact centers and IoT providers. Teams can use its API and published setup guides for supported platforms.
What it does well
- Coverage listed in 241 countries and regions
- Local trunking includes emergency and toll-free access
- Security options include TLS/SRTP and VPN interconnection
- API manages numbers, orders and configurations
- 24/7/365 customer support is advertised
What to know first
- No free plan or free trial
- A $30 minimum account balance is required
- Sales must enable outbound termination
- Per-minute rates vary by destination
Limits
A minimum account balance of $30 is required to start using DIDWW services, and outbound termination requires enablement by sales. Local outbound termination also requires at least one applicable DID number; country eligibility can affect capacity-plan availability or pricing.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| International Outbound Termination | Per minute as calls are made; destination-specific rates are in the downloadable price list. · No minimum monthly commitment · Service must be enabled by DIDWW sales | On request |
| Metered Capacity | Per minute; no activation or monthly fee. · Unlimited capacity · No long-term commitment · Country eligibility may affect availability | On request |
| Local Outbound Termination | Per minute as calls are made; destination-specific rates are in the downloadable price list. · Requires at least one applicable DID number · Service must be enabled by DIDWW sales | On request |
| Flat-rate Capacity | NRC and MRC per channel; rates are discounted at higher volumes. · Volume tiers: 1, 30, 300, or 990+ channels · Country eligibility may affect price and availability | On request |
As didww.com lists them, read 4 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://www.didww.com/voice/global-sip-trunking.
- Review DIDWW's setup guide for your platform, such as 3CX, Asterisk or Microsoft Teams Direct Routing.
- Maintain the $30 minimum account balance required to start using DIDWW services.
- Contact DIDWW sales to enable outbound termination.
- Choose a termination plan and check its applicable destination or channel rates.
Verdict
DIDWW combines local and international SIP termination with security options, integrations and API controls. Buyers should account for the minimum balance requirement and sales enablement for outbound termination.
Questions
Is DIDWW Two-way SIP Trunking free?
No. It is a paid service and has no free plan or free trial.
How is the service priced?
The listed termination options are billed per minute, while flat-rate capacity is billed with NRC and MRC per channel. Destination rates and channel pricing vary; no specific plan price is listed.
What platforms have setup guides?
Guides are listed for Microsoft Teams Direct Routing, 3CX, Asterisk, FreeSWITCH, Avaya, Genesys Cloud CX and Twilio BYOC.
What does local trunking include?
It provides outbound calling with DIDWW phone numbers, guaranteed caller ID, local dialing, and access to local emergency services, short codes and toll-free numbers.
Can DIDWW numbers be ported?
Yes. Number porting is supported.
What is required before using outbound termination?
A $30 minimum account balance is required to start, and DIDWW sales must enable outbound termination.
Facts from DIDWW Two-way SIP Trunking's own pages
- API
- The DIDWW API supports programmatic management of phone-number inventory, ordering, and service configurations. · doc.didww.com, 4 Oct 2026
- Coverage
- DIDWW says its SIP trunks are available in 241 countries and regions. · didww.com, 4 Oct 2026
- Emergency calling
- DIDWW says DID numbers are routed to the relevant public safety answering point for safety and compliance. · didww.com, 4 Oct 2026
- Headquarters
- Dublin, Ireland · didww.com, 28 Sept 2026
- Integrations
- DIDWW publishes setup guides for platforms including Microsoft Teams Direct Routing, 3CX, Asterisk, FreeSWITCH, Avaya, Genesys Cloud CX, and Twilio BYOC. · doc.didww.com, 4 Oct 2026
- Intended customers
- DIDWW describes the service as serving operators and enterprises, and identifies IoT providers and contact centers as voice use cases. · didww.com, 4 Oct 2026
- International trunking
- International A–Z termination supports global premium routes and can use DIDWW or third-party phone numbers. · didww.com, 4 Oct 2026
- Local trunking
- Local SIP trunking provides outbound calling with DIDWW phone numbers, guaranteed CLI, local dialing, and access to local emergency services, short codes, and toll-free numbers. · didww.com, 4 Oct 2026
- Pricing limits
- A minimum account balance of $30 is required to start using DIDWW services, and outbound termination must be enabled by the sales team. · didww.com, 4 Oct 2026
- Resilience
- DIDWW reports 99.998% network uptime and describes its private network as geo-redundant with 24/7/365 in-house monitoring. · didww.com, 4 Oct 2026
- Security
- The product page lists per-trunk encryption options, DIGEST and IP authentication, VPN interconnection, and TLS/SRTP security. · didww.com, 4 Oct 2026
- Security certification
- DIDWW announced that it received ISO 27001 certification for its information security management system. · news.didww.com, 4 Oct 2026
- Support
- DIDWW advertises customer support availability 24/7/365 and says telecom experts can assist from network planning through deployment. · didww.com, 4 Oct 2026
- What it does
- SIP trunking connects a business PBX to local telephone networks over the internet using SIP instead of physical phone lines. · didww.com, 4 Oct 2026
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