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Aastra Clock Change Guides

Follow instructions below or get in touch for help

Aastra Intelligate Range

  • Use any internal extension


  • Time:


  • Lift handset


  • Dial +57 hhmm (beep)


  • Hangup


  • Date:


  • Lift handset


  • Dial +58 dd mm yyyy (beep)

  • Hangup

Aastra AVS5150,  EVM22, MVM 48 Voicemail Cards

  • Use any internal extension


  • Lift handset and press voicemail access key or dial 500


  • When prompted enter your password


  • Dial 9


  • Dial *900 (beep)


  • Dial 1234 (beep)


  • Dial *420


  • Dial 1-7 (1=Mon, 7=Sun)


  • Enter the time in 24hr clock (beep)


  • To check it is successful dial *440 and voicemail and time will announced

  • Replace receiver

Please contact us should you require any further assistance