Tag Archives: SIP

Yealink Handset Crackling or Buzzing from Handset and Speakerphone

You may occasionally notice that your Yealink phone starts crackling or buzzing.  This has most commonly been observed after the phone has been in operation for sometime without being rebooted or after a firmware update.

Below are some troubleshooting steps that you can try to resolve the buzzing and crackling

  • Try restarting the Yealink Phone (You can either remove the Power or Ethernet Cable if using PoE, alternatively just hold down the X key until you are prompted to restart the phone)
  • Try a Factory Reset on the Phone, ensure that you have all the required settings to reconfigure the device after the factory reset.
  • Update the phone firmware to the latest release and then perform a factory reset prior to configuring or provisioning the phone again.
  • Confirm if crackling or buzzing is just occurring from the handset or also from the speakerphone.  If just the handset exhibits the issue then the cable or handset may need to be replaced.
  • Ensure that the VoIP/SIP Phone System is up to date
  • Ensure that you are using the most appropriate voice Codecs for your phones and the SIP Trunk. (A-law is commonly used in Europe and u-law is generally used in the United States)

Change of behaviour with TRAN (Transfer) key after upgrading Yealink T3X and Yealink T2X Firmware to V70

I have noticed a change of behaviour with TRAN (Transfer) key after upgrading Yealink T3X and Yealink T2X to the new V70 firmware along with upgrading 3CX Version 11 to Service Pack 3.

It appears that the default DSS Key Transfer Mode is changed from Attended Transfer to Blind Transfer.  An Attended Transfer was always performed when you used the BLF/DSS Keys to perform the Transfer in previous Yealink firmware versions.  For example A calls B wanting to speak with C, B presses TRAN button and then presses the BLF/DSS Key for C.  In this instance B should be able to speak with C (Attended Transfer) to see if they want to take the call rather than A just being passed straight to C (Blind Transfer).

yealink blind transfer

 

You need to login to the Yealink HTTP Interface and then navigate to Phone->Features->Transfer Settings and Change “Transfer Mode via DSSKey” to “Attended Transfer” by using the drop down menu.

yealink attended transfer

So by changing this simple setting you can restore the Attended Transfer function whilst still taking advantage of the V70 Firmware for your Yealink Phone.

Watchguard XTM 1050, XTM 2050, XTM 2 Series, XTM 3 Series, XTM 5 Series, XTM 8 Series – Fireware XTM OS 11.6.1 – CSP3 Build # 354688

Watchguard XTM 1050, XTM 2050, XTM 2 Series, XTM 3 Series, XTM 5 Series, XTM 8 Series – Fireware XTM OS 11.6.1 – CSP3 Build # 354688

11.6.1 – CSP3 Build # 354688 Resolves the following issues:

BUG69616: The dynamic IP at peer side is not added into the local cache file at multi-wan

BUG69351: After reboot multiple Phase 1 one time outs occurred. Unable to build VPN tunnels

BUG69624: Limit rate of phase one auto start after reboot

BUG69377  Incorrect model number displayed with MODEL 505 license

BUG69625: iked crash sig 6, sig 11

BUG68554: Interface failing to route and not listing ‘inet addr’ in status report > interfaces

BUG68312: SIP proxy causes CFM restart due to memory cap violation

BUG67656: Process `cfm.5′ with pid: 1515 / tid: 1515 died unexpectedly on signal 6 (SIP)

BUG67479: CFM Stack traces using SIP after upgrading from 11.4.2 to 11.5.3U1 using existing setup

BUG67782: cfm.2 stacktrace, SIP (stack contents @ 0xbe836430), signal 6

BUG67001: BOVPN over 1:1 NAT fails with multiWAN causes one way traffic (inbound fails)

BUG68944: VPN 1:1 nat does not work when we use it on multiwan(3 pppoe and 1 dhcp)xtm box

BUG69090: VPN tunnel fails and stops passing traffic – xfrm_dst_cache value exceeded in slab info

BUG67819: memory leak causing xfrm_dst_cache value to increase and causing appliance to lockup

BUG69351: After reboot multiple Phase 1 one time outs occurred. Unable to build VPN tunnels XTM2050

You can request 11.6.1 – CSP3 Build # 354688 from Watchguard Support by logging a support case online, they should then be able to provide an ftp download link and appropriate credentials.

Please note that Watchguard CSP releases are cumulative so you should only need to apply the latest to ensure that you also have any previous fixes.

Dial code to set 3CX MyPhone extension status

You can use the following dial codes to change your 3CX MyPhone extension status

The dial codes are as follows:

*30 = Available

*31 = Away

*32 = OutOfOffice

*33 = Custom1

*34 = Custom2 *3

You can just dial *31 to change your status to Away in 3CX MyPhone