Specification sheet · Voice & Wholesale Carrier Services
Voice Origination & Inbound
Inbound calling on local, national, mobile and toll-free numbers from 110+ countries, delivered to your platform over SIP with the routing, failover and reporting a contact centre expects.
Carrier-grade inbound origination: DIDs and toll-free in 110+ countries terminated to your SIP endpoints with geo-redundant delivery, elastic capacity and real-time CDRs.
- Countries with numbers
- 110+
- Inbound core availability
- 99.99%
- PoPs delivering SIP
- 40+
At a glance
- Local, national, mobile and toll-free numbers in 110+ countries
- SIP delivery to any endpoint: CCaaS, UCaaS, PBX or softswitch
- Primary / secondary routing with failover on timeout and 5xx
- Elastic inbound capacity for campaign and seasonal peaks
- Geo-redundant delivery from six core PoPs
- Number porting and regulatory documentation handled for you
- Per-number CDRs, answer / abandon reporting and SIP diagnostics
- Same interconnect as termination, DIDs and A2P SMS
Typical use cases
- 01Contact centres and BPOs
- 02UCaaS and cloud PBX providers
- 03Multinational enterprises
- 04Marketplaces and on-demand apps
- 05Healthcare and public services
- 06Conversational AI and IVR platforms
Technical & commercial specifications
| Coverage | Numbers in 110+ countries; local numbers in 100+; toll-free where offered |
|---|---|
| Number types | Geographic, national, mobile, toll-free, shared-cost (per country) |
| Delivery | SIP over UDP/TCP/TLS; RTP/SRTP; registration or IP authentication |
| Codecs | G.711a/u, G.729, G.722, Opus; DTMF RFC 2833/4733; T.38 where supported |
| Routing | Ordered destinations, timeout/5xx failover, time-of-day and geo rules |
| Fallback media | Hosted announcements, voicemail-to-email, SIP redirect |
| PoPs | London, Frankfurt, Amsterdam, Ashburn, Mumbai, Singapore |
| Capacity | Elastic; committed channels available for guaranteed peaks |
| Reporting | Per-number and per-trunk analytics; CDRs via API and SFTP |
| Support | 24×7 NOC; P1 response ≤ 15 min; numbering and porting desk |
Talk to Dollu about Voice Origination
Send us your destinations, volumes, sites or use case and we will return a proposal, pricing and a technical plan within one business day. Test credentials and the full service description and SLA document are available on request.
- Sales
- [email protected]
- Phone
- +91 777-500-2222
- Web
- dollu.com
- NOC
- [email protected] · 24×7
Dollu Ltd · 2403A, Iconic Corenthum, Sector 62, Noida 201301, India. This sheet summarises the standard service; specifications may vary by country and are confirmed in the service order.
Online version: https://dollu.com/services/voice/voice-origination
Contact: https://dollu.com/contact?service=voice-origination