If you’ve decided to work with Oki-Toki, you need telephony. The system has queues, scripts, dialers, analytics, but without a SIP number, you won’t be able to make or receive calls.
A SIP number is a regular landline or mobile number that works over the internet. It connects to Oki-Toki and then all the logic works within the platform.
Usually the next question is: which provider to choose in Romania so you don’t have to urgently change everything later? We’ll help you figure this out. In this article, we’ve compiled a review of companies based on public data and our clients’ experience.
This material is not promotional in nature, the information is obtained from official websites and based on our clients’ experience. It’s better to check current terms, prices and technical details with the operators. Oki-Toki is not their representative.
What to pay attention to when choosing a SIP provider
You’re not just buying a number. You’re choosing the foundation of your entire voice infrastructure. Much more depends on the provider than it seems at first:
- correct phone number transmission;
- stability of incoming and outgoing calls;
- no restrictions on mass dialer campaigns;
- ability to scale quickly;
- connection quality (delays, echo, dropped calls);
- technical support performance;
- no blocking by destination.
If everything is configured correctly, you just work and don’t think about telephony. If not, problems quickly show up in connection rates, reports and agent workload. Therefore, it’s better to choose a provider without rushing and with an understanding of what tasks lie ahead.
Which providers offer SIP telephony in Romania
Most Romanian telecom operators work through B2B departments, so telephony connection is usually discussed directly with a manager. Below we’ve prepared a list of providers that operate in the Romanian market and offer SIP numbers, SIP telephony or SIP trunk. This is not advertising or a ranking — just a review based on public information and project experience.
Orange Romania Business
Orange Romania Business — corporate division of Orange Romania. Works with business clients and telecom operators. Services include fixed telephony, SIP trunk and IP telephony.
This is not a retail direction for private clients, but a business segment – companies, call centers, providers and large projects.
Voxbee
Voxbee — Romanian provider of telecom and VoIP services for businesses: virtual telephony, corporate communications and VoIP solutions, as well as CRM and PBX integration.
- Voxbee SIP accounts and numbers can be used through standard SIP registration;
- the specific connection format (SIP trunk or individual SIP accounts) is discussed with the sales department or technical support.
Iristel Romania
Iristel — international telecom operator, with an office/representative in Romania. Provides SIP trunk and voice services for businesses:
- SIP trunk;
- multi-channel numbers;
- corporate voice solutions;
- international routing.
ClickPhone
ClickPhone — Romanian VoIP company that specializes in virtual telephony and SIP solutions:
- virtual numbers;
- SIP trunk;
- cloud communication solutions;
- internet services.
Focused on corporate clients and call centers that need telephony and integration with internal systems.
Optivoice (Opticom/OptiHost)
Optivoice — Romanian VoIP telephony and SIP solutions provider, part of Opticom Consulting. Operates in IP communications and IT infrastructure, offers SIP account connection and PBX integration.
They offer:
- VoIP telephony and SIP connection;
- solutions for corporate clients;
- setup and support of voice infrastructure;
- hosting and related IT services.
DOTRO Telecom
DOTRO Telecom — telecom operator, provides VoIP and corporate communication solutions.
Main services:
- SIP connections;
- IP telephony;
- corporate communications;
- internet services.
SpoTel (part of S.T. Group)
SpoTel — VoIP operator with SIP traffic support and cloud communication services in Romania. The company offers SIP channels, local numbers and corporate telephony services for companies and contact centers.
AdaTel Services
AdaTel — local telecom provider and VoIP services operator, works in the small and medium business segment:
- VoIP and SIP solutions;
- business telephony;
- corporate tariff plans;
- network and telecom services for companies.
Alonia
Alonia — local provider, the company provides VoIP and corporate telecom solutions:
- VoIP/telephony for companies;
- virtual numbers;
- basic SIP services.
General features of local Romanian providers
SIP number availability
For many providers, SIP numbers are not always displayed in the public catalog; more often direct interaction with the sales department is used.
Documents and contract
When connecting SIP numbers or corporate services, the following is often required:
- company registration documents
- communication services contract
This is standard for European VoIP/SIP operators.
Caller ID and regulation
In Romania, number transmission requirements are regulated by the national communications regulator — ANCOM. This means that when using SIP numbers, it’s necessary to comply with numbering and call identification rules.
What’s important to consider:
- The number must be real and verified. The provider must ensure that the company has the right to use the specified Caller ID.
- Spoofing (number substitution) is prohibited. Transmission of a false or someone else’s number may be blocked by the operator.
- Correct number format. Caller ID must be transmitted in the correct format (for example, +40…).
- Compliance with the national numbering plan. The number must be officially allocated and comply with Romanian numbering rules.
- Ability to identify the call source. The operator must have the technical ability to identify the call sender during checks or complaints.
International providers with coverage in Romania
DIDWW — international provider of virtual numbers and SIP trunk with local and national numbers, including Romania (+40). Works in the B2B segment and supports connection via SIP and API. Contacts: +40 (31) 229-52-22 (for Romania).
Plivo — service for working with virtual numbers and voice communication via API. Offers numbers in different countries, including Romania, as well as connection via SIP and API. More often used in development, SaaS and technology projects. This is not a classic local telecom operator, but a cloud platform for voice service integration.
United World Telecom (brand of Global Call Forwarding) – international virtual numbers, including Romania. Also supports SIP connection. Used in projects where local presence in different countries is needed.
Lexicall — international VoIP provider working with SIP connection and voice routing. Supports destinations in different countries, including Romania. More often used by call centers and projects with large volumes of outgoing calls.
Telnyx — international cloud communications platform. Offers virtual numbers and SIP trunk, including for Romania. Often used in SaaS projects, financial and international services.
AstraQom — operator with international coverage, SIP trunk and corporate VoIP telephony provider, including with support for Romanian numbers. Suitable for call centers and business projects, connection possible via SIP and API.
Bandwidth (formerly Voxbone) – virtual number provider in Europe. Suitable for connecting international SIP numbers and Romanian +40 zonal numbers. Usually works with large companies, SaaS platforms and telecom operators.
Zadarma — VoIP provider with virtual numbers, SIP accounts and its own PBX. Offers Romanian numbers and is suitable for small and medium businesses.
AVOXI — virtual number and SIP telephony operator with support for different countries, including Romania.
PBX.IM — international SIP trunk and virtual number provider. Supports numbers in different countries, including Romania. Suitable for projects with distributed teams and cloud infrastructure.
Recommendations from Oki-Toki
Don’t connect many numbers at once. Take one and test it in operation. This is enough to understand how the provider works in real conditions.
Check incoming and outgoing calls, whether there are problems with the dialer and how the line behaves under high load.
It’s important to look not only at whether “calls are going through,” but also at the details: are there delays during connection, do calls drop, are there restrictions on mass campaigns.
Telephony is the foundation of call center operations. If the connection works stably and without hidden limits — you can scale up.
Additionally, you can read our articles on the website:
