Avaya B179 SIP, Руководство по установке и администрированию

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Avaya B179 SIP Conference Phone Installation and Administration Guide
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On phone: > SETTINGS > ADVANCED > (PIN) > NAT TRAVERSAL (6,2,3).
Advanced
Enable SIP Replaces Default is Yes. Setting this option to No, will instruct the PBX not to
use the SIP replace header. Some PBXes try to take over the bridging
functionality from Avaya B179 using this command, which causes the
calls to interrupt.
Enable Blind Transfer Default is Yes. Setting this option to No, will disable the transfer func-
tion (
> TRANSFER
) during a call. This may be used if the PBX does not
support blind transfer.
Allow contact rewrite Default is Yes. When enabled, the B179 will store the IP address from
the response of the register request. If a change is detected, the
phone will unregister the current sip URI (contact), and update the
sip URI with the new address. Must be set to No in a CS1000 server
environment.
Send media ‘inactive’ Default is No. Must be set to Yes in a CS1000 server environment.
instead of ‘sendonly’
on hold
Outbound proxy
The IP address of the outbound proxy server.
Conference server The IP address of the conference server that is currently in use.
Accept-Language header
value
Indicates the preferred languages for reason phrases, session
descriptions, or status responses carried as message bodies in the SIP
response.
Transport
The transport setting only concerns the protocol to be used for SIP messages between the
devices involved. These settings do not include the media (the actual call). The settings on the
Media tab should be set accordingly.
Note that if you choose to use a secure connection, both units must support it. Otherwise
they cannot negotiate a connection. If an incoming call demands a secure TLS or SIPS connec-
tion, the Avaya B179 uses the appropriate protocol even if you have set the phone to use UDP.
Protocol
UDP (User Datagram Protocol) is a protocol on the transport layer
in the Internet Protocol Suite. It is a stateless protocol for short mes-
sages – datagrams. Stateless implies that it does not establish any
connection between sender and receiver in advance. UDP does not
guarantee reliability or ordering in the way that TCP does. Datagrams
may arrive out of order or go missing without notice. The advantages
it offers are speed and efficiency.