manual Vega Gateway

Version 2.1 16 March 2006 Page 33 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.
11. Appendix 2 – Things to consider
Audio quality
• Ensure that the IP network does not drop data
• Use QOS to ensure that VoIP traffic is given priority through routers
•
Choose best quality codec that is possible for the bandwidth available
• Turn off silence suppression
• Turn off Echo cancellation
Existing firewalls
•
Ensure that the existing firewall / NAT can cope with the data bandwidth required for the
voice traffic (ensure that they do not drop packets, introduce too much latency or introduce
too much jitter). If it cannot, consider using a specialist VoIP firewall for handling just the
VoIP traffic.
• Beware, some VoIP aware firewalls ‘get it wrong’. A VoIP-aware firewall that mis-translates
things can be worse than a non VoIP-aware firewall. Check that the VoIP-aware firewall
works correctly or turn off the functionality and use a purpose-designed product.
Contact Details
Email: [e-mail]
Web: www.vegastream.com
www.vegaassist.com
EMEA Office
VegaStream Limited
The Western Centre
Western Road
Bracknell
Berks RG12 1RW
UK
[phone]
USA Office
VegaStream Inc.
6200 Stoneridge Mall Road
3rd Floor
Pleasanton
California 94588
USA
[phone]
VoIPon Solutions www.voipon.co.uk [e-mail] Tel: [phone]