JANET Voice Advisory Service
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Technology
- JANET VoIP Infrastructure
- VoIP Deployments within the Campus
- Addressing, Numbering and Directories
- Skype
- External Links
The JANET network supports routing of all IP protocols. SIP packets are routed to their destinations just like any other packet, including any VoIP servers such as for example, Asterisk. The JANET network does not provide a cheap/free gateway for SIP traffic to the PSTN.
JANET(UK) has commissioned a number of reports in areas that have been identified via the requirements gathering exercise. These reports will be completed and published later this year.
The initial set of topics that have been identified are:
- Glossary of VoIP related terms
- VoIP: What is it and Why?
- Voice and VoIP Regulatory Issues
- Interconnecting Traditional Telephony Systems and VoIP
- Interconnecting IP Telephony Systems
- VoIP on Network Operating Systems
VoIP Deployments within the Campus
- Deploying IP Telephony on Greenfield Sites
IP telephony is what is generally meant when traditional telephony is replaced with IP technologies – such as Voice over IP (VoIP) – within an enterprise or campus network. This briefing document provides an insight into the decisions behind and outcomes of deploying a VoIP system on a new campus site.
Addressing, Numbering and Directories
- ENUM and e164.ja.net - what is it?
Note: ENUM is fully launched in the UK and this 2007 document is currently being reviewed.
The document defines the ENUM standard that was developed by the Internet Engineering Task Force as a means of mapping regular telephone numbers to methods of contacting the user of that number over the Internet.
The following links are useful and provide information on firewalls and how to disable supernode functionality in Skype.
- Skype and Universities (external link)
- Skype Technical FAQ (external link)
- Skype and Firewalls (external link)
A document outlining the effects of Skype on the JANET network was produced by the Voice Advisory Group a few years ago. This has been archived because the features of Skype that raised concerns in the past – use of bandwidth and encrypted tunnels – have been addressed by Skype in recent releases.
VoIP Pros and Cons
- Taking the VoIP Plunge (external link)
- VoIP what it is, why people want it, and where it is going - JISC Horizon Scanning Report (29 pages, Sept 2006)
There are many benefits to using voice over IP instead of a landline, but it can be hard to decide whether to cut the telco cord completely. Here are a few pros and cons to help.
Any problems, comments or suggestions regarding this page, please e-mail the VAS service manager.