Our team has unrivalled knowledge of fixed and mobile telephony / voice communications including:

  • Direct line signal post telephones (SPTs) / point zone telephones

  • Emergency phones / PETS systems

  • ETDĀ  phones

  • SPT concentrator systems from Siemens / Enterasys, Northgate / Damovo, Ericsson, BT Syntegra, STS, Kestrel etc.

  • Voice recording systems

  • Mobile telephony (GSM-R)

  • Legacy in-cab systems (CSR / IVRS)

  • Voice Over IP (VOIP) systems

  • Radio systems