400HD Series IP Phones for Skype for Business
Version 2.0.13B 26 Document #: LTRT-08271
handset, or, after pressing the digits of a phone number and then pressing the speaker button on
the phone, the number should be dialed.
One second of Comfort Noise is heard when an incoming call comes in to a Response group.
(Applies to the 420HD phone only) When using redial from the Call Log to answer a GSM\PSTN
call that comes in, the phone adds a domain name to the number.
Incorrect Caller ID is displayed in the phone's Call Log due to ; separations in the Caller ID.
The phone may start a call with no audio, or even fail the call, when it is configured to operate with
an O/H (After Working Hours) schedule and it receives a forwarded call from RGS.
Incorrect handling of an incoming SIP Notify message may cause wrong BLF Presence of a
Federated user after a long time (several hours).
Inability to establish a call from the phone's Missed Calls list.
Pressing the End softkey in order to regret and disconnect a call, may not work on the first try.
The phone cannot choose which call to accept when two incoming calls come in at the same time.
If a call is received while dialing to perform an outgoing call, the incoming call is answered
automatically after the dialing timeout expires. The expected behavior is for the phone to make the
outgoing call and ignore the incoming call when the dial timeout expires.
The phone fails to perform a Blind Transfer to a user without an assigned number.
The phone does not recognize an asterisk * as a dialing digit.
(Applies to the 420HD phone only) The phone may crash when performing a Hold in a basic call.
Power Consumption: the power should be 6.4W when connecting with CDP or LLDP.
Phone presence is missing when the Lync server sends multiple presences in one BENOTIFY.
When searching in the Corporate Directory while the phone is offline or in limited service, the
phone crashes.
The phone may get stuck when performing toggling between two calls.
The phone re-signs in during an incoming call if it receives a SIP 'Early Dialog' message.
The phone may not play a ringback tone when connected over an Edge Server.
The phone displays a wrong display name when it was signed in with a user with 'tel/ext', then re-
signed in with a user without 'tel/ext'.
Calls may fail in an environment where a DNS request for the TURN server address has resulted in
two IP addresses.
Hold and Transfer does not function well when the phone is configured with a Lync Client Policy
that includes {EnableClientMusicOnHold: False}.
When the phone is configured to work in Response Group/Attended, a delay of several seconds
(up to eight seconds) may occur upon an incoming call.
Missing digits when a number is dialed following a prolonged idle time.
3.4 Version 2.0.9.127
3.4.1 What’s New in Version 2.0.9.127
The following new features have been introduced in Version 2.0.9.127:
A new logging mechanism 'Lightweight Syslog' allows the user to perform phone logging without
affecting the phones' performance.
To enable the Lightweight Syslog:
Access the phone's Web interfaces' System Logging page (Status &Diagnostics tab >
Diagnostics > Logging), set the 'Activate' parameter to Network and provide a valid IP address
and server port. Do not set any of the options (keep all as 'None').
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