Wholesale SIP

Build your voice service on wholesale interconnection.

Wholesale SIP (Session Initiation Protocol) provides IP telephony for providers and resellers. It fits services sold to your customers; for your own business, compare enterprise SIP Trunking.

It is not the usual choice for an end-user business; it requires a provider’s operational and commercial capabilities.

Let’s talk

Office phone and headset for business communications.

How it works

Build your voice offering on carrier-grade interconnection.

Provider platform

Colt SIP interconnection

Integrate voice service

Numbers and PSTN

A foundation for your own service

The provider integrates its UCaaS, CCaaS or voice platform with Colt for inbound/outbound traffic and numbering in supported markets. End customers consume the provider’s offering.

Define interconnection, provisioning, support and country obligations. Voice transport does not automatically deliver the entire commercial and regulatory service.

Provider platform

Colt SIP interconnection

Control scale and fraud

Numbers and PSTN

Scale with operational control

Size concurrency, call patterns and interconnection capacity. Correlate call records and signalling to detect errors, rejections and anomalies.

Agree fraud controls, destination permissions and consumption monitoring. A sudden increase in minutes may be legitimate demand or an incident.

Provider platform

Colt SIP interconnection

Coordinate recovery

Numbers and PSTN

Recover across two operators

Resilience requires coordinated interconnection points, routes and alternative capacity. Test endpoint failure and inbound/outbound calling behaviour.

Define operations-team escalation and customer communication. Colt availability and provider-platform availability are separate dependencies.

Illustrative case: from situation to decision

Situation: A provider wants to add telephony to the platform it sells to customers.
Option: Define interconnection, numbering and commercial and operational responsibilities.
Check: Test interoperability, fraud controls and incident escalation before onboarding customers.

For providers, OTTs and resellers with operational capability; not standard enterprise SIP.

Decisions for your project

Markets: Countries, numbering, porting and allocation of obligations.
Interconnection and control: SBC, channels, signalling, encryption and fraud controls by variant.
Cross-team operations: Provisioning, records, support, escalation and recovery tests.

From design to operation

Validate eligibility and interconnection with pilot traffic before expanding countries and volume.

Complements, alternatives and variants

Intelligent NumbersComplementAssess numbering and inbound routing compatible with the offering.SIP TrunkingAlternativeEnterprise alternative when not building a service for third parties.

Product sources

Colt Wholesale SIP Trunking · new tab

What challenge would you like to solve?

Tell us what is happening and what needs to change. You do not need to know the catalogue.

Name

Company

Work email

Phone (optional)

What would you like to solve? (optional)

Do not include passwords, sensitive data or confidential information.

Ideas to get started (optional)

You can use this idea and explain what is happening in your situation.

Enquiry context

This context will be added to your message. You can edit or remove it; it does not replace your explanation.

Product (optional)

Case or situation (optional)

Service family (optional)

Locations and timing (optional)

Cities or countries

When do you need it?

* Required fields. The challenge description, phone, service and context are optional.

Your draft is kept while you navigate this website. Reloading or closing the tab clears it.

Controller: Begumva, S.L. We process your details to handle your enquiry and, only if you choose, send updates. Read about recipients, retention and your rights.

Privacy

I have read the privacy policy. *Send me technology updates by email (optional).

You can also email us at contact@coltplatinum.es.

What happens next?

Understand the context
What’s changing, where your teams work and what cannot fail. Still defining the brief? We can help structure it.
Design the options
Bring needs, Colt capabilities and technical criteria together. Compare alternatives and explain dependencies and limits.
Validate before committing
Coverage, feasibility, responsibilities and terms. A commercial proposal is developed with the relevant specialists.

ColtPlatinum guides the project and coordinates commercial discussions and follow-up. Colt validates feasibility, enters into the service contract, and provisions, installs and delivers the services.

Availability, coverage, capabilities, SLAs and timelines are subject to technical validation and contract. No diagram is a service guarantee.