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SIP Trunks - The cost-effective and flexible

alternative to ISDN

What is SIP Trunks

A SIP Trunk is primarily a concurrent call that is routed over IP backbone using VoIP technology. SIP Trunks are used in conjunction with an IP-PBX and are thought of as replacements for traditional IDSN or analog circuits. The popularity of SIP Trunks is largely due to the cost savings of SIP, along with increased reliability. Compared to ISDN, SIP Trunks are cheaper on a per-channel basis and more flexible in terms of what telephone numbers you can have and the locations in which you can have them. In addition, they are quicker to install and offer a robust business continuity service that ensures your business never loses any calls. Telemaxx SIP Trunks provide a highly-flexible alternative to ISDN and are compatible with all the leading IP PBX brands in the UK market, giving you peace of mind that your PBX hardware works with the network service.

Flexibility with phone numbers

SIP trunking enables you to move office and keep the same geographic number without any ongoing call-forwarding costs or those associated with producing new company stationery.

Save money

IP connectivity costs less than ISDN with lower call costs, free internal calls between extensions and offices 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.

Who needs SIP Channels

Businesses that have high outbound call volumes and a large number of physical lines will benefit from having SIP trunks. Also small businesses and start-ups who would prefer to avoid the expensive installation and on-going costs of traditional physical lines.

The Benefits …

Fraud prevention Flexible numbering Supports multi sites Free calls to UK 01, 02, 03 Numbers Full business continuity model
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