Aastra OpenCom 100 Series Mounting And Commissioning User Manual page 127

on the System Info: Codes page. Activate "SIP phones". Please also note the corre-
sponding information in the "OpenCom 100 / Aastra 800 – Operation on Standard
Terminals User Guide" user guide.
Alongside code number procedures, SIP subscribers can also use a series of functional
features realized via the SIP protocol. The OpenCom 100 is the ending for all SIP con-
nections as opposed to what is usually the case on the Internet. This enables SIP sub-
scribers to use OpenCom 100 features. Direct data exchange is thus not possible
between two SIP subscribers. The following table shows the possible features.
Features
Incoming and outgoing calls with call
number display (CLIP)
Parallel connection of multiple SIP
subscribers
Enquiry, toggling, call waiting, three-
way conference, reject
Call transfer
Blind Transfer
Keypad as "INFO" message
Voice over IP (VoIP)
Notes
A SIP telephone requires a call number
display for CLIP.
SIP subscribers must be logged on
under the same user identification.
Operation or feature must be available
on the SIP telephone or in the SIP
software.
before and during a call; operation
must be available.
SIP only: forwarding an incoming call
without accepting the call; feature must
be supported by SIP telephone or by
the SIP software.
DTMF tones cannot be securely
transferred "in band" via compression
codecs. Digital "out band" transferral as
"INFO" SIP message or via RFC 2833/
4733 is supported. This feature must be
available and activated on a SIP
telephone or in the SIP software.
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