Lily Systems are now offering a small business VOIP PBX integrated with firewall technology to provide the most cost effective solution for SMEs of up to 30 users:
Features include Voicemail, Hunt groups, Call Diversion/Transfer, Auto Attendent (IVR), Remote workers
The system can handle up to 30 VOIP extensions offering the perfect replacement for a traditional PBX; saving on line rental, call costs, maintenance and efficiency providing 'internal' calls to remote workers . It has capability for 6 SIP trunks (20 channels), 2 x IDSN2e ports (4 channels) as well as an analogue port into which you can plug a phone, fax, PDQ. Failover to an analogue line provides resiliency in the event of broadband failure. 
Read more or contact Lily Systems on 01858450440 for more information or to arrange a demo.