
Administration
A31003-C1000-M101-1-76A9, 03/2016
106
OpenScape Desk Phone CP200/400/600, Administrator Documentation
administration.fm
System Settings
3.6.8.4
Media/SDP
OpenScape Desk Phone CP phones support IPv4/IPv6 media address negotiation in SDP us-
ing ANAT (Alternative Network Address Types). ANAT allows for for the expression of alterna-
tive 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.
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.
Administration via WBM
System > SIP interface
Administration via Local Phone
>
If SRTP is enabled, ANAT interworking is only possible if SDES is configured as the
key exchange protocol for SRTP (see Section 3.5.1, “System”).
|
--- Admin
|
--- System
|
--- SIP Interface
|
---
Media negotiation
|
---
Media IP mode
SIP interface
Outbound proxy
Default OBP domain
SIP transport
UDP
TLS renegotiation
Secure (RFC5746)
Call transaction response timer (ms)
NoCall transaction response timer (ms)
32000
32000
Reg. backoff (seconds)
60
Submit
Reset
Connectivity check timer (seconds)
Keep alive format
Media Negotiation
Media IP Mode
0
Sequence
Single IP
IPv4
SIP connection
Persistent (SB)
Early 183 response