SIP Trunking

Our SIP Trunking solutions are premium, toll-quality voice solutions which provide access to the PSTN over our next generation network. They replace costly and inflexible ISDN lines, delivering a high quality voice solution that reduces your costs and allows voice and data to be converged into one connection.

Our solution is ideal if your business wants to reduce the cost of telephone bills and line rental charges without sacrificing quality. If you have a TDM or IP PABX and want to consolidate your voice services into a single converged infrastructure, our SIP Trunking solution will enable you to do so.

How does it work?

Complete IP Solutions SIP trunking connects your PBX to our network enabling full PSTN breakout on the public telephone network. Connection from your site or sites to the network is via an IP connection, for example broadband or Ethernet, and is delivered as an end-to-end service with an availability guar­antee, voice channel guarantees, and voice quality of service assurances.

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The benefits of SIP Trunking

With SIP trunking you get a service that is more robust and cost effective than ISDN. And because SIP trunking is an IP-based telephony service, you also get number flexibility which gives you a whole host of other added benefits that can solve real business issues. Here are just some of the other ways that SIP trunking can enhance your business.

Flexibility with your phone numbers

Allows you to move office and keep your same geographic number without any ongoing call forwarding costs and costs associated with new company stationery.

Business continuity

If your office has to be temporarily relocated in an emergency, this can quickly and cost effectively be achieved with SIP Trunking.

Line rationalisation

For businesses with multiple sites, SIP Trunking provides ISDN line rationalisation options and reduces the number of PBXs you need to maintain – all with full control of the numbers associated with your business.

Save money

IP connectivity costs less than ISDN with lower call costs, free internal calls between extensions and offices (including international calls) and lower line rental costs for multi sites. Also, no expensive call-forwarding costs are required should you relocate or need to divert calls in the event of a disaster.


A phone service that will cope with any situation and can give you 100% up time on your telephony. Whether you need to keep your business running without expensive call forwarding costs in a disaster or emergency or you need to load balance your calls between sites during peak hours, SIP Trunking delivers.

Voice and internet convergence

With Complete IP SIP trunking delivered over Ethernet, you can have both a high quality voice and data service all over one connection, giving you significant cost savings.

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