IP telephony with your existing switchboard

Upgrade your company’s phone network connectivity.

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Perfect for:
Startups SMB Large enterprises

Our solutions

SIP Trunk is a system for connecting telephone calls from your users between your PBX and the POST VoIP platform using Session Initiation Protocol.

SIP Trunk Business

SIP Trunk Business is intended for companies looking for an independent telephony solution and seeking to take control of their PBX.

SIP Trunk on ConnectedOffice

A simple and scalable solution with the ALL-IN-ONE offer ConnectedOffice.

SIP Trunk Corporate

Do you want to keep your telephone exchange while benefiting from IP telephony? Do you need redundancy on one or more sites? SIP Trunk Corporate is for you.

Why choose SIP Trunk?

Dedicated connection

Service completely isolated from the internet to guarantee network security.

Free communications

Service within a company using the same SIP Trunk.

A flexible number of channels

Service reserved for routing calls (the number of channels chosen defines the number of calls that may be made or received simultaneously).

Keep your numbers

Guaranteed portability.

Local solution

Technical support based in Luxembourg.

Do you need an all-in-one solution?

SIP Trunk on ConnectedOffice gives you a single physical connection for all the IT and telecom services you need: phone, internet, Wi-Fi, LAN, teleworking, etc. With SIP Trunk on ConnectedOffice, you are choosing better manageability.
 

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Is telephony a critical activity for your business?

Choose SIP Trunk Corporate, the premium solution of the Luxembourg market. Redundancy guarantees service availability.

  • In normal circumstances: phone calls are distributed evenly between the two lines.

  • In the event of line failure: all phone calls are directed to the line that is still functioning; all capacity in terms of number of channels is handled by the connection that took over.

Compare the solutions

SIP Trunk on ConnectedOffice

SIP Trunk Business

SIP Trunk Corporate

Geo-redundant VoIP platform

Mono or multi-sites redundancy

Number of channels

from 2 to 30

from 2 to 60

from 2 to infinity

Max. number of phone numbers

up to 30

up to 30

Infinity

6/8-figure root numbers

4/5-figure root numbers

chargeable option

chargeable option

chargeable option

Number porting

Pre-migration test number

Displaying a single number for all outgoing calls

on request

on request

on request

Caller number display

on request

on request

on request

Withheld number call

on request

on request

on request

Whitelist / blacklist

on request

on request

on request

Blocking calls to certain destinations

on request

on request

on request

Redirection

chargeable option

chargeable option

chargeable option

Service Level Agreement

Business (subject to charges)

Business (subject to charges)

Business or Premium (included)

SBC gateway

chargeable option

4G back up

Do you need help?

Do you have any questions about SIP Trunk? Consult our FAQs and our technical guide on SIP Trunk Business.

Consult the FAQ Consult the technical guide

Interested?

Dowload the brochure

Would you like more information about the product? Download the brochure in PDF format.

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Do you have any other questions? 

Call us free of charge on 8002 4000 or +352 2424 4000 for international calls form Monday to Friday from 8am until 6pm.

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Discover POST's strengths: innovations, certifications, CSR commitments.

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