ZyXEL Communications MAX218M2W, Руководство пользователя

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Chapter 10 The VoIP Account Screens
MAX208M2W Series User’s Guide
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1st Codec,
2nd Codec,
3rd Codec
Select the MAX208M2W Series’s first, second, and third choices of the
type of voice coder/decoder (codec) that you want the phone line to
use when communicating with the SIP server. The following codecs
(shown in highest quality to lowest quality order) are supported by
the MAX208M2W Series:
• G.711 aLaw (typically used in Europe)
• G.711 muLaw (typically used in North America and Japan)
• G.729
You can also select NONE for the 2nd and 3rd codecs if your VoIP
service provider only gave you one or two codec settings.
See Voice Codecs on page 227 for more information on voice codecs.
When two SIP devices start a SIP session, they must agree on a
codec.
Media
SIP User
Agent Name
Enter the name you want to show in the "User-Agent" header of SIP
packets sent by this account.
SIP Local Port Enter the MAX208M2W Series’s listening port number, if your VoIP
service provider gave you one. Otherwise, keep the default value.
Session Timer
Flag Enable
Select this activate the MAX208M2W Series’s session timer. If you
encounter connectivity issues with your network or Internet, then it is
suggested that you use the session timer.
Session Timer Enter the session expiry time in seconds for all phone connections on
this trunk The allowable range is 120~65535 seconds. This value
cannot be lower than the Min Session Timer.
This allows the MAX208M2W Series to automatically disconnect any
phone calls on this trunk after a certain period of inactivity.
Min Session
Timer
Enter the minimum session expiry time in seconds. The allowable
range is 90~65535 seconds.
When an incoming call requests a session expiry time that is lower
than this, the MAX208M2W Series uses this value instead.
Timeout for
Ring back
Enter the maximum number of seconds the MAX208M2W Series has
the associated phone ring for an incoming call. After this time period
is expired, the MAX208M2W Series has the phone stop ringing. The
caller will hear a busy tone then.
Table 53 VoIP > Account 1 (or Account 2) > User
LABEL DESCRIPTION