An AI voice agent cannot simply "go live" on a phone number the way an app goes live on a store. Before a caller's first word reaches it, the system has to land on a real telecom circuit — a licensed operator, a SIP trunk, a codec that survives the trip without mangling speech — and xAIa, the Dubai voice-AI company, lays out that plumbing in unusual detail across three of its own blog posts about deploying voice agents in the UAE.
xAIa, which describes itself on its own site as the AI consultancy and implementation arm of PRO TECHnology Group, is based in Dubai. Its blog states plainly: “Carrying calls to and from the public phone network in the UAE is a licensed activity.” That is also the independent rule a business cannot avoid regardless of which AI vendor it uses.
The four routes xAIa says it uses to connect an AI voice agent
According to that post, xAIa connects a voice agent to a working UAE number through one of four routes, chosen according to what a business already has in place.
- An existing SIP trunk from a licensed UAE operator — reusing the lines a business already has. xAIa's blog on this route: “The default for anyone already running a contact centre.”
- A contact-centre platform or cloud PBX, where the agent joins as a registered extension or queue destination inside software a team already uses, per the same post.
- An international number, suited to “genuine international traffic,” or as a temporary stand-in while a UAE trunk is still being arranged through an operator.
- An on-premise deployment, where call audio is processed inside the company's own network perimeter — the route xAIa says government bodies, banks and insurers with data-residency rules tend to choose.
xAIa says the typical project, on any of these four routes, runs “30 days from scoping to production, with 30 days of hypercare after go-live.”
Why the codec and the signalling standard matter to a caller
Two technical layers decide whether a voice agent sounds natural on a call. The first is signalling — the protocol that sets a call up, keeps it open and ends it — which xAIa's blog ties to RFC 3261. That is a real, independently published internet standard: the Internet Engineering Task Force's own document describes SIP as “an application-layer control (signaling) protocol for creating, modifying, and terminating sessions with one or more participants,” published in June 2002. Keypad digits pressed mid-call are carried separately, as “named telephone events” under a second IETF standard, RFC 4733, titled “RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals” and published in December 2006.
The second layer is the audio codec. xAIa's blog says UAE operator trunks default to G.711, sampled at 8 kHz, while a compressed alternative, G.729, saves bandwidth but is “lossy exactly where a speech recogniser reads,” meaning the compression can strip out detail an AI transcription layer needs. Wideband codecs such as G.722 and Opus carry more of that detail, but only when both ends of the call support them end to end, according to the same post.
The telephony partner behind the connection: Vapi
xAIa does not build this telephony layer alone. Its blog states that xAIa is a Vapi service partner, with the partnership covering “Carrier selection, SIP trunking, UAE numbers arranged through licensed operators, PBX integration, and routing that holds up under real network conditions.” xAIa describes Vapi's own role as handling “the real-time voice loop: speech in, model reasoning, speech out, fast enough that the caller never hears the machinery.”
Vapi's own site corroborates the general shape of that claim without naming the UAE specifically: its homepage advertises “<500ms average latency” for voice agents built on its platform, and its own tagline reads: “Build, deploy, and improve voice agents as fast as you ship.” Vapi's own public pages do not mention the UAE, the GCC or a service-partner programme covering the region — that detail exists only on xAIa's side of the partnership, as published.
The UAE rule neither company can shortcut
Beyond the technical layer sits a licensing one. The UAE's Telecommunications and Digital Government Regulatory Authority states on its own site that it “is an independent public authority established under Federal Law by Decree No. 3 of 2003, to oversee the telecommunications sector and all Licensees of the UAE,” Elsewhere on the same page, the TDRA states: “It is not permitted to conduct any Regulated Activity unless authorized by a License or exempted” under that law. The same TDRA guidance classes VoIP as a regulated telecommunications service “which requires a licence or an exemption,” the independent basis for xAIa's own statement that carrying calls over the public network is a licensed activity, not a technical detail a deploying company can route around.
The honest limits
xAIa does not publish a price for any of the four connection routes, name which UAE operators it has active trunk relationships with, or say how many of its clients run on each route versus the others. Vapi's own site, in turn, publishes nothing specific to its UAE partnership beyond what appears on xAIa's blog, so that half of the relationship cannot be checked against Vapi's own account of it.
Frequently asked questions
What is an AI voice agent?
An AI voice agent is software that answers or places phone calls using speech recognition and a conversational AI model in place of, or alongside, a human agent, following scripts or completing tasks such as booking or qualification without a person on every call.
How does an AI voice agent get connected to a real phone number?
According to xAIa, it uses one of four routes — an existing SIP trunk from a licensed operator, a contact-centre platform or cloud PBX, an international number, or an on-premise deployment — chosen according to what telecom infrastructure a business already has and its data-residency needs.
Is deploying an AI voice agent in the UAE regulated?
Yes. The UAE's telecom regulator, the TDRA, treats carrying calls over the public telephone network, including VoIP, as a regulated activity requiring a licence or an exemption under the Telecommunications Law — a rule that applies regardless of which AI vendor a business uses.
Who is behind xAIa?
xAIa says on its own site that it is the AI consultancy and implementation arm of PRO TECHnology Group, which it describes as serving MENA enterprises and governments since 1998 across five companies, with xAIa its newest addition, founded in 2025.
Product details and capabilities in this article are as published by xAIa and its named partners at the time of writing.
