Extension of voice and data

CXR offer many solutions to extend the analogue voice links, the signalization or digital voice like ISDN protocol with data over synchronous or sophisticates protocols.

In order to simplify this presentation we will split by type of voice, of support or transport and the main condition of private or public application .

• Extension of analogue voice, PSTN
  
• Extension of digital voice, ISDN

And beyond that

• PBX’s Interconnection with analogue links LIA (RON-TRON or E&M)
  
• PBX’s Interconnection with digital synchronous line E1 or ISDN PRI
  
• Distribution of the ISDN BRI and PRI access
  
• Transportation of SS7 for the operators and mobile carriers

All of this will by done with modems over coppers (DSL/G703) or fiber optic, over networks PDH and SDH, and as an encapsulated over IP protocols using the TDM over IP or VoIP technologies.