manual Vega Gateway

Version 2.1 16 March 2006 Page 8 of 33
Vega Gateway Scenarios. ©2005-2006 VegaStream Ltd.
Examples are given in best faith – ensure that you check the capabilities of systems before
deploying them, especially the functionality of devices not designed and delivered by VegaStream.
3. VoIP between sites and home-worker / remote office using a proxy
Aim: To reduce inter-site call costs without changing the user experience, and adding in more
advanced home-worker support
Many multi-site companies find that staff making calls between sites is a significant company
expense. Finding a method of reducing to zero the ongoing costs of these calls would be a real
benefit to the bottom line. Also, with more and more people working from home – either
permanently or just occasionally – it is useful and cost effective to have home-workers able to
make free calls to office based staff and use the company PSTN connection for outbound
company calls (no more telephony expenses forms, and appropriate tariffs for outbound calls
based on those negotiated by the company with their chosen carrier).
By inserting a Vega gateway between the PSTN and the PBX the Vega can consider how to
handle every call between the PSTN and the PBX either routing the call over IP, routing the call to
the PBX or routing the call to the PSTN.
With the addition of a Proxy / Media server to the system, advanced processing of calls can be
accomplished. This functionality is Proxy dependent, but often includes, for example
• Forked calls (presenting calls to more than 1 destination at a time) – where a desk phone
(off the PBX) and the home-office phone (off a residential gateway) both ring when a call is
received for that extension number
• Road warrior support – where road warriors use SIP devices (residential gateways, or soft
phones) as their telephone. Wherever the road warrior connects their SIP device it
registers with the Proxy so that the proxy knows the current IP address of the road warrior.
Any phone calls can then be sent over IP to this IP address. The road warrior can therefore
‘be in the office’ wherever they are in the world – at home, in a hotel, or even at a customer
site.
•
Voice-mail for IP devices
• Conferencing server for IP devices
• Follow me, call diversion on no IP endpoint registered
•
Other functionality – proxy dependent
VoIPon Solutions www.voipon.co.uk [e-mail] Tel: [phone]