Two-way voice
Two-way voice gives you a single phone number that handles both inbound and outbound calls, with the number you bought presented as the outbound caller-ID - no third-party CLI, no spoofing, fully aligned with the regulator's outbound presentation rules.
At a glance
Two-way voice
Two-way voice gives you a single phone number that handles both inbound and outbound calls, with the number you bought presented as the outbound caller-ID - no third-party CLI, no spoofing, fully aligned with the regulator's outbound presentation rules.
On a true two-way voice number, every call arrives on your platform AND every call your platform originates is delivered to the called party with the same number on the screen. That matters because the dialled-back-from contact is identical to the number you publish, the called party can return the call and reach the same IVR or agent that called them, and the outbound CLI is something the carrier and the regulator can both verify. Modern outbound CLI rules - STIR/SHAKEN in North America, Article 97 of the European Electronic Communications Code in the EU, and equivalent regimes in the UK and Australia - increasingly require that the presented number is one the originating party demonstrably controls. Two-way voice on GlobalXess gives you exactly that, on the same numbering ranges that drive your inbound traffic, in the same coverage matrix.
FAQ
Frequently asked questions
What is a two-way voice number?
A two-way voice number is a single public phone number that you can both receive calls on (inbound) and originate calls from (outbound), with the called party seeing that exact number as the caller-ID. It is the opposite of an inbound-only DID, where you can receive on the number but have to originate outbound calls through a separate trunk that presents a different CLI.
Does the outbound CLI really show the number I bought, not a generic carrier number?
Yes. That is the entire point of two-way voice on GlobalXess. The number you purchased is the originating CLI on every outbound call you place from it. We do not insert a 3rd-party CLI, a wholesale 'parent' number, or a generic carrier-pool number. The receiving party's network sees the same number you publish on your website, your invoice and your contact form.
Why do other providers present a different CLI on outbound?
Many number providers are resellers without an outbound termination relationship for the country in which they sell the inbound DID. To deliver outbound at all they have to hand the call to a separate, often cheaper, route that presents whatever CLI that route allows - typically a generic carrier number or a number from a different country. That works for raw connectivity but breaks customer call-back, breaks STIR/SHAKEN attestation, and increasingly breaks regulatory presentation rules. GlobalXess avoids this because we are the licensed carrier for the inbound number AND we own the outbound route, so the CLI passes end-to-end without substitution.
In which countries is two-way voice available?
Two-way voice is available on every leaf marked 'two-way' on the live coverage page. In a small number of countries the regulator forbids outbound originating from a freephone or premium-rate range; those leaves are explicitly marked inbound-only on the catalog and the public coverage API. The default for ordinary geographic numbers in 150+ countries is two-way.
Does two-way voice work on freephone or mobile numbers?
On geographic numbers two-way is the default. On freephone (toll-free) ranges most regulators forbid outbound origination, so freephone numbers are inbound-only by design - that limit is a legal one, not a technical one. Mobile numbers are two-way in markets where the local mobile-network operator allows outbound from the range we provision; the coverage page marks each mobile leaf accordingly.
How is two-way voice different from a SIP trunk?
A SIP trunk is the IP path between your platform and our network - it carries voice in both directions but is identified by your account, not by a particular phone number. A two-way voice number is the public phone number that travels over that SIP trunk, in either direction, as both the destination of inbound calls and the originating CLI of outbound calls. You can have one SIP trunk and many two-way numbers presented over it.
Where we offer this
The country list below is the live carrier catalog for this product. Click a country for area codes, port-in posture and area-type breakdown.
Talk to the team
Carrier-grade voice and messaging direct from a licensed European operator. Pricing, paperwork and provisioning all handled by the same team.
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