A31003-D3000-M100-02-76A9, 11-2013
OpenScape Desk Phone IP V3R3, Phone Administration, Administrator Documentation 109
Administration
System Settings
Administration via WBM
System > SIP interface
Administration via Local Phone
Related To pics
Related Topics
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SIP Communication
3.5.8.3 Media/SDP
OpenScape Desk Phones support IPv4/IPv6 media address negotiation in SDP
using ANAT (Alternative Network Address Types). ANAT allows for for the
expression of alternative network addresses (e. g., different IP versions) for a
particular media stream.
When Media negotation is set to "ANAT", ANAT is supported; the phone will re-
register with the SIP server and advertise ANAT support in the SIP header. When
set to "Single IP", ANAT support is disabled.
INFO: If SRTP is enabled, ANAT interworking is only possible if
SDES is configured as the key exchange protocol for SRTP (see
Security - General Configuration).
Media IP mode defines which IP version is to be used for voice transmission.
With "IPv4", only IPv4 is used; with "IPv6", only IPv6 is used; with "IPv4_IPv6",
both IPv4 and IPv6 can be used, but IPv4 is preferred; with "IPv6_IPv4", both IPv6
and IPv4 can be used, but IPv6 is preferred.
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--- Admin
|--- System
|--- SIP Interface
|--- SIP transport
