Issue: Mitel 5312 IP phone screen is stuck on "Contacting RCS…" message.

When you restart the phone (by unplugging the network cable), it shows “VLAN None” then “Option 129 Missing

Reason: There is no VLAN set on the phone. It should be set to a VLAN. In this case, it needs to be VLAN number 3. You may have to find your correct VLAN number.


  1. Unplug the network cable which powers the phone.
  2. While the phone is booting, press and hold the Up and Down arrow keys simultaneously.
  3. Network Parameters? *=Yes    #=No   will show up.
  4. Press * for yes.
  5. View Current Netwrk? *=Yes      #=No will show up.
  6. Press * for yes, so we can confirm what is set on VLAN.
  7. Press arrow down until you see the VLAN ID parameters. Keep pressing down and it will prompt for question as follows, and just press # for No.
    • View Current Netwrk?
    • View All IP Addrs?
    • View DHCP Values?
    • View Current Values?
  8. When it prompt for Static QOS?, press * for Yes.
  9. You can press # for No when it asked for View QOS Params?
  10. Press * for Modify QOS Params?
  11. Scroll down until you see the VLAN ID.
  12. Press 3 then scroll down again.
  13. It will ask to save the settings, so save it and it will ask to be rebooted.
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Sample dialplan I made pointing to different greeting message and a diversion to mobile call after hours on weekdays and a different day of the week, this is with SailPBX installed.

exten => s,1,GotoIfTime(17:00-07:58,mon-fri,*,*?whattodoafterhours) same => n,GotoIfTime(6:00-23:58,sun,*,*?leavevoicemail:closed) ; Below will work for M-F 7pm-7:58am (Asterisk allows 2 minutes gap, so no point typing 7:59) same => n(whattodoafterhours),Playback(pls-wait-connect-call)
; To dial internal extension number 5000 same => n,Dial(SIP/5000)
; Or you can also enable to divert to mobile number, then comment the next line below ;same => n,Dial(SIP/0412345678@peer4041) same => n,Hangup ; Below is applicable for Sunday only same => n(leavevoicemail),Background(usergreeting3001)
; Caller will leave a voicemail to extension number 5000 mailbox same => n,Voicemail(5000,su) same => n,Hangup same => n(closed),agi(sarkhpe,Inbound,Main,,)
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Option 66 (Boot Server Host Name) with a string value of needs to be enabled on your DHCP Server if you are planning to disable DHCP server on Tesltra's supplied modem for DOT (Digital Office Technology) such as Netgear DEV2020 and Netgear 7610.

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When buying Polycom RealPresence Group 500, you’re buying the device with a codec with a requirement of one year maintenance from either Transition Ensure or other Polycom distributor in Australia. The setup below is using a different VoIP service provider and not Microsoft. Make sure your VSP can accept video call. It is best to have Polycom on the other caller's end because if it’s a different device in the other end, you may need to do bridging on non-Polycom device and you may loose some functionality like linking to whiteboard and data sharing. For example, if you decided to get a Yealink video conference device.

In buying Polycom RealPresence Group 500, consider the following Q&As.

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Devices involved on this setup are the following:

  • NBN Modem is Telstra Netgear DEVG2020
  • VoIP Gateway Cisco SPA8000-G for the 3rd phone line
  • Existing premise MDF
  • Analogue PBX is Telstra Commander ME-NT-B 742/116
  • PBX handset is Commander NT8B17AA-77
  • PBX answering machine is Panasonic KX-TM100ALB

Before the internet has been migrated to NBN connection, it was using Telstra ADSL connection.
After the NBN became active, Telstra copper lines became inactive (not physically though) and everything comes to the fibre.
Meaning all existing phone numbers have to be ported as a cloud number and be configured on the modem.
Telstra Netgear DEVG2020 comes with VoIP already configured, but if you need the username and password then you need to contact Telstra.

Basically, the objective is to get incoming lines from the modem back to the MDF (i.e. pair 1, pair 2, pair 3 as incoming lines normally starts from first pair) then make sure you jumper pair 1, 2, 3 to your PBX device.


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Some hardware requires FTP, TFTP to upgrade the firmware like the Netcomm VoIP Gateway V431, V440, etc. When I was updating the firmware of my V440, I had no issue. But when I had to update my V431, the update doesn't want to move from 0% even though I checked that there is no firewall issue withmy PC and my router. So its best to make your PC as teh TFTP server, but of course you need the necessary firmware from the real FTP site and download it in your PC. We will be using C:\TFTP-Root as the location of our firmware files. Let's get started.

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