Instead of having to change your user settings by using speed driven menu system, you can make changes to all relevant parameters by using a web based interface. In order to access the web based functions of the Voice-over-IP infrastructure, please point your web browser to the following address:
Please note, that you have to be connected to the university network directly or by VPN.
You will be presented with the following page:
Click “User Settings”.
Login with your primary username and password, as noted on your IFI Voice-over-IP Welcome e-mail / paper.
Immediately after you have logged in, you will be presented with the user settings dialog, shown above. Among other settings, you may change your primary password and Voicemail PIN. If you wish to change your password, please enter the password twice in the respective textboxes. Another important setting is the “VoIP Account Active” setting. Only if this setting is activated you can receive incoming calls. If you have ever used a SIP software client or telephone with the IFI Voice-over-IP infrastructure, your account is already activated.
The meaning of the individual settings is explained on the right side. Do not forget to click the “Send changes” button in order to make the settings take effect which happens immediately for all subsequent phone calls.
Clicking on the “Diversions” link at the top of the page, display the so called diversions table for your account. Your Voice-over-IP phone number is very different to a normal one. When someone dials your number, not only one but many different telephones (hardware or software) can ring at the same time or after each other. The Diversions Table allows you to configure exactly in which order your incoming calls are routed to your different telephones or Voice-over-IP clients. These “Destinations” must not necessarily be your own number. Call forwarding to secretaries and similar scenarios are possible as well.
Please consider the following explanation of the individual
configuration fields, as well as the example below (also featuring the
use of a 'secondary' username).
The above image shows a typical example of a diversions table that consists of five rules. Let us first go through the meaning of the different columns.
- The “Nr” column is simply an identifier for a specific rule. (It is of no concern to users)
- The “Priority” column shows the priority of the rule. For a better overview, the table is always ordered by increasing priorities. (Entries are considered in sequence according to their priority value - starting at 1 - and entries of the same priority value are always considered at the same time)
- The “Active” column shows if the rule is currently applicable. If this field is unchecked, the rule is simply ignored. This can be used to temporarily deactivate rules instead of deleting them.
“Technology” column determines the type of network connection used
to reach the number/address specified in the “Destination” column.
If you are unsure, the PSTN setting should work for most cases when
diverting to an external phone.
- PSTN: Traditional phone network connection
- SIP: Voice-over-IP protocol
- IAX2: Voice-over-IP protocol
The “Destination” column holds the actual phone
number or address for traditional phone network connections or
Voice-over-IP connections respectively.
- For PSTN: Please enter the university internal (e.g. 51234) or external telephone number (e.g. 0441234567, international 0015551234).
- For SIP: Please enter the extension of the IFI-VoIP SIP telephone (e.g. 50989). You may also indicate external SIP destinations in the form "email@example.com".
- For IAX2: Please enter the extension of the IFI-VoIP IAX2 telephone (e.g. 50989). You may also indicate external IAX2 destinations in the form "firstname.lastname@example.org/1234".
- The “Timeout” column specifies the amount of seconds the phone specified in the rule rings, before processing is moved to the next higher available priority. Please note: If several entries have the same priority and different timeouts specified, the smallest timeout value is relevant for the whole priority.
- If you mark a rule with “Delete”, it will be deleted the next time you click the “Send changes” button.
As you may have noticed, the top two entries cannot be deleted or changed. The reason for this is that it makes no sense to actually disable your Voice-over-IP account as a whole. If do not have any Voice-over-IP telephones registered with the Voice-over-IP infrastructure, these entries will simply be ignored. You may however change the priority of the entries to let your Siemens phone ring before your Voice-over-IP telephones.
Remember that in addition to your primary username you have nine secondary usernames available if you have more than one SIP or IAX2 phone that you wish to use with the Voice-over-IP infrastructure. These secondary usernames are not configured in the diversions table beforehand. In order to do so, enter the corresponding secondary username in the “Destination” field and select to appropriate “Technology”, either SIP or IAX2, depending on what type of phone you are using with the secondary username. Note that unlike the primary username, secondary usernames are not real phone numbers and can therefore only be used in the diversions table.
In order to better illustrate how the diversions table processing works, let us look at an example configuration:
When an incoming call is received with this configuration, it will be processed as follows:
- My SIP and IAX2 phones will ring (Nr. 1 and Nr. 2), at the same time my Siemens phone at extension 57585 (Nr. 3) rings as well as my second SIP telephone with the secondary username 508981 (Nr. 4). As you can see, all these rules have the same priority value of 10.
- After 20 seconds have passed by and none of those phones are picked up, processing moves to rule Nr. 5. This can for example be the telephone of the secretary (50983). This phone will ring for 20 seconds.
- If the telephone of the secretary is not picked up, processing moves on to the rules Nr. 6 and Nr. 7 with both priority 30. Nr. 6 shows the SIP URI of the Voice-over-IP account at home, while Nr. 7 represents the personal telephone number at home.
- If the call is not picked up for another 20 seconds, the voicemail system will ask the caller to leave a message.