CAS

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== CAS and TelcoBridges ==
 
== CAS and TelcoBridges ==
As of July 2009, CAS signaling is supported at the basic API level but is not supported at the [[Toolpack]] / [[Web Portal]] level and is thus not accessible for more basic applications (i.e., that don`t require programming code). TelcoBridges is investigating the possibility of exposing access to CAS at the web portal level or higher. We are also looking at options that will enable the solution developer or the service provider to the CAS stack according to local variants, without having to request a new stack variant from TelcoBridges.
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As of April 2010, CAS signaling is supported at the basic API level but is not supported at the [[Toolpack]] / [[Web Portal]] level and is thus not accessible for more basic applications (i.e., that don`t require programming code). TelcoBridges is scheduled to release support for CAS R2 within the Toolpack Web Portal interface during the 3rd quarter of 2010.
  
  
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Please contact TelcoBridges regarding support for additional variants.
 
Please contact TelcoBridges regarding support for additional variants.
 
  
 
== References ==
 
== References ==

Revision as of 13:02, 21 April 2010

Channel Associated Signaling is a signaling protocol for the set-up and tear-down of phone calls. It is different from other signaling protocols such as SS7 in that it is not message/packet-based but rather based on bit transition for state changing, and tone transmission for information and state information exchange. In many parts of the world, CAS was first replaced by ISDN and in many cases, was ultimately replaced by SS7. Today, CAS is often used with low density trunks.


CAS and TelcoBridges

As of April 2010, CAS signaling is supported at the basic API level but is not supported at the Toolpack / Web Portal level and is thus not accessible for more basic applications (i.e., that don`t require programming code). TelcoBridges is scheduled to release support for CAS R2 within the Toolpack Web Portal interface during the 3rd quarter of 2010.


Supported variants

The following CAS variants are currently supported at the basic API level:


RBS T1 variants:

  • Wink start
  • FXS Ground start
  • FXS Loop start
  • FXO
  • Taiwan R1


R2 CAS variants:

  • China
  • Korea
  • Singapore
  • Bangladesh
  • Generic (ITU spec base)


Please contact TelcoBridges regarding support for additional variants.

References

Wikipedia article

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