
Administration
A31003-C1000-M101-1-76A9, 03/2016
104
OpenScape Desk Phone CP200/400/600, Administrator Documentation
administration.fm
System Settings
3.6.8.2
SIP Transport Protocol
Selects the transport protocol to be used for SIP messages. The values "UDP", "TCP", and
"TLS" are available. The default is "UDP"; default when System > Registration > Server type is
set to "HiQ8000" (firmware version V3 onwards): "TLS".
Administration via WBM
System > SIP interface
Administration via Local Phone
3.6.8.3
SIP connection
When using persistent connections the phone is always acting as connection client, no listening
port gets opened to allow incoming connection attempts.
A Persistent connection for SIP-TCP will result in only a single client connection to the SIP serv-
er – the SIP server will reuse the available TCP connection for sending SIP requests to the
phone (like at SIP-TLS).
Persistent (SB) means persistent connection with Switchback.
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Outbound proxy
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Default OBP domain
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--- Admin
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--- System
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--- SIP Interface
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SIP transport
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