Use Enhanced DSS Keys on a Yealink T42G

With the help of tim942’s post in this thread, I was able to get my Yealink T42G phone, running firmware 36.83.0.55, to automatically retrieve voicemail from an Asterisk server.

1. Enable Enhanced DSS Keys (EDK) in your config file:
features.enhanced_dss_keys.enable = 1

2. In the phone’s web UI, on the Dsskey tab, set a DSS key Type to “Custom Key”.
3. Enter the macro/number string in the Value. Example: *97$Cp4$1453721#4133#$Tdtmf$
$Cwc$ – Macro to wait until call is connected before continuing
$Cp#$ – Macro to wait for # seconds
$Tdtmf$ – Macro to submit the preceding numbers as DTMF tones

The example macro dials *97 to reach the Asterisk voicemail system, waits four seconds, then dials, as DTMF tones, the mailbox number 1453721 and password 4133. Hash tags (#) are added to let Asterisk know that an entry is completed.

To code that in a config file on line key 7:

linekey.7.type = 73
linekey.7.value = *97$Cp4$1453721#4133#$Tdtmf$
linekey.7.line = 0
linekey.7.label = Voicemail
linekey.8.xml_phonebook = 0

According to tim942 on May 5, 2017, that only works on Custom Keys in DSS. He wishes it would work in the Address Book. I wish it would work in the Account >  Advanced > Voice Mail field so the user could use the envelope icon rather than a DSS key to retrieve voicemail.

1 thought on “Use Enhanced DSS Keys on a Yealink T42G

  1. steve

    Thank you! It works! I appreciate the help. I needed to dial an INUM access number, pause of a couple of seconds and then dial the INUM number. Worked first time. I tried this on a T46G Yealink Firmware version 28.83.0.55 (does this mean this is v83 firmware?) and it worked first time! I appreciate the help! Thank you!

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