S I G N A L I N G A N D R O U T I N G F E A T U R E S
C H A P T E R 8
151
ECOTEL 3G 16.1. Revised: 1 March 2011.
8 S I G N A L I N G A N D R O U T I N G F E A T U R E S
8 . 1 I N T R A S T A R
This feature uses Intranet/Internet (packet-based networks) and the ISDN network (line-based network) to transmit
voice calls. It ensures uninterrupted voice transmission when voice quality over the Intranet/Internet becomes un-
supportable. How the voice data arrives at the peer is irrelevant.
Automatic fallback to ISDN occurs in the following situation:
During call setup (when the target number cannot be reached through the Intranet/Internet).
During the call (when the voice quality no longer corresponds with the customer’s requirements).
If the voice quality improves to the defined level during the call, transmission of the voice data will automatically
revert to the Intranet/Internet, and the IntraSTAR ISDN connection will be torn down.
Bear in mind that both devices that handle the connections via VoIP or ISDN must be IntraSTAR capable for this
feature to work.
To activate this feature, configure the following entries in the
route.cfg
:
MapAllIS=*<service type>*<port>
The keyword
IS
activates IntraSTAR routing.
The type of service appears first on the right side of the equal sign, followed by the ISDN port to which the
IntraSTAR setup will be sent. The following type of service values are possible:
0500
(BTX)
0700
(data)
The following parameters must be set in the corresponding VoIP profile:
VoipIntrastar=yes
VoipBrokenDetectionTimeout=<ms>
VoipQualityCheck=<type minsamples limit recovertime>
8 . 2 D I G I T C O L L E C T I O N ( E N B L O C K / O V E R L A P R E C E I V I N G )
This function makes it possible to collect up to 24 digits and transmit calls when a specific number of digits has
been dialed. The entire call number is required for the call to be set up with a mobile phone or the mobile gateway.
Since most numbers have a uniform number of digits, the mobile gateway can collect digits when calls enter the
gateway in overlap mode. Digit collection occurs through the following mapping command:
MapAll<direct>=|<num><<<digits>
The
|
(pipe) signifies that the following digits will be collected before they are transmitted, and <digits> is the total
number of the port digits and the digits of the called party number. This figure can range between 00 and 24 and
must be entered in double digits. The parameter
DTMFWaitDial
defines the number of seconds the system waits
between the individual digits (default 5). Please bear in mind that you can configure a maximum of 11 digits in the
first part of the command and 19 (including a special character, e.g. #) in the second. The call will be forwarded
as soon as the specified number of digits has been dialed or a time-out limit has been reached.
Example:
The following example shows a call with the prefix 01555. The
|
(pipe) signifies that the following
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