AudioCodes 420HD - Page 12

400HD Series IP Phones for Skype for Business
Version 2.0.13B 12 Document #: LTRT-08271
 Internet Explorer with HTTPS cannot be used to access the phone's Web interface; the option is
blocked as part of the security changes related to SSL/TLS upgrade.
 When accessing the Web interface's Line Setting page, the password might be sent as unsecured
clear text, so this page, as well as the 'Line Settings' section in the Quick Setup page, are exposed
to threat.
 When a user line number URI without 'tel:' is received from the Active Directory, both BLF presence
and the user's name are not displayed.
 Paging
• Incoming ring continues to be played even after the phone rejects a paging call.
• Phone crashes when trying to end a paging call received while signing in.
• Phone initiates a new call if the speaker button is pressed while a paging call via the handset
is active.
 One-way-voice occurs after 30 minutes in a call, in calls between the phone and the PSTN, if the
SRTP Key is re-generated upon a SIP Refresh Reinvite from the remote side.
 Phone uses the same cookie session ID to access the Web interface.
 Phone plays a Ringback tone during a call if voip/services/call_waiting/generate_tone/enable=0.
 Calls made through Media Bypass are disconnected after 15/30/45 minutes due to bad handling of
SIP Refresh Reinvite.
 Can't perform Blind Transfer when the phone is in remote conference; the phone's LCD gets stuck
on 'transferring'.
 When the phone is in limited service, the BLF LEDs still stay on.
 Consulted Transfer doesn't function if, after receiving a second incoming call, the Trans softkey is
pressed.
 On rare occasions, the phone fails to sign-in, and the following message is received: 'Fail to obtain
user certificate'.
 In some environments (in which a significant delay is noticed), a call that comes in during an
existing call may be disconnected if it is answered immediately after the first Call Waiting beep.
 Blind Transfer cannot be performed for a Lync user with a line URI that does not include the ‘+’
sign.
 Korean translation issues.
 Hungarian translation issues.
 German translation issues.
 Italian translation issues.
 Czech/Slovak translation issues.
 USB headset limitation:
• When resuming a second call, the voice goes to speaker.
 On rare occasions, the phone may become instable when idle due to an issue with the provisioning
mechanism.
 In some Skype for Business environments, the call may be rejected by the server side due to
incorrect order of the remote candidates lines in the outgoing SIP message.
 Function Keys do not work for SIP addresses longer than 32 characters.
 Phone may enter a loop of unnecessary provisioning retries when an image or configuration file
does not exist on the provisioning server.
 ICE credentials are refreshed every 8 hours rather than according to the value set by the server
during inband provisioning. This may cause one-way voice when a call is initiated.