Yealink SIP-T4 Series Configuration Manual page 21

Step
System Configuration Items y0000000000<xx>.cfg
Step 5
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Step 8
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BROADSOFT PARTNER CONFIGURATION GUIDE – YEALINK T4X IP PHONE
2017 BROADSOFT INC.
©
Command
Enable reliable response.
account.1.100rel_enable = 1
Enable Session Timer.
account.1.session_timer.enable = 1
account.1.session_timer.expires =
300
account.1.session_timer.refresher
= 1
Enable Call Waiting.
call_waiting.enable = 1
call_waiting.tone = 1
Enable MWI.
account.1.subscribe_mwi = 0
account.1.subscribe_mwi_expires
=3600
Enable negotiated DTMF type.
account.1.dtmf.type = 1
Select Transport Type.
account.1.sip_server.1.transport_
type = 0
Enable Feature Key Sync.
bw.feature_key_sync = 1
Purpose
Reliable provisional response
(PRACK) should be enabled.
Set the T4xG IP Phone to enable
Session Timer.
Session Refresher:
0 = uac
1 = uas
Set the T4xG IP Phone series to
enable Call Waiting and Call Waiting
Tone.
MWI: Solicited when setting
SubscribeMWI = 1.
MWI: Not solicited when setting
SubscribeMWI = 0.
Set the T4xG IP Phone to enable
inband or RFC 2833 negotiated
DTMF.
Set the SIP transport:
Transport = 0 (UDP)
Transport = 1 (TCP)
Transport = 2 (TLS) (except T18P)
Transport = 3 (DNS-SRV) (except
T80P)
Enable Feature Key Sync (except
T18):
1 = Enabled
0 = Disabled
20-BD5476-00
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