10
Introduction
Introduction
Overview
The OpenStage 5 SIP is a modern multi-function IP telephone. It is designed for connection to
data networks and is not directly connected an ISDN system or to the PSTN.
The OpenStage 5 SIP enables voice communication via the standard Internet Protocol (IP). It is
compatible with the signaling stack in compliance with the SIP (Session Initiation Protocol) proto-
col specification.
The OpenStage 5 SIP can be used just like a conventional telephone – the only difference being
that your calls are directed via a data network. The telephone has an Ethernet interface so that
when using the TCP/IP protocol, you can make the telephone calls both via your own intranet and
via the worldwide Internet.
The OpenStage 5 SIP also supports other standard protocols, which optimizes the data and voice
transmission and simplifies the administration of the unit. For example, the administrator can
download updates for equipment software or feature enhancements to the OpenStage 5 SIP via
the FTP server.
A wide variety of features and programmable keys enable you to configure the OpenStage 5 SIP
to meet most requirements.
Secure Voice Transmission
Prerequisite:
To be able to use secure voice transmission, this feature must be actiuvated by ser-
vice personnel.
You can set up a secure connection withOpenStage 5 SIP phones if the receiving phone also has
the capability. The voice transmission is encrypted; it is decrypted in the receiving party’s tele-
phone. Even the signaling for call setup and the exchange of encryption information occur over a
secure connection. The phones must have valid registration on an SIP server. You can set whether
a short tone can be heard if the connection is not secure (see
Telephone Types
The administrator can set up the OpenStage 5 SIP as:
• a single-line telephone.
• a multiline telephone
This manual describes how to use the OpenStage 5 SIP when it is connected to the
OpenScape Voice.
Some of the features described in this manual are only available because they are provided
by OpenScape Voice. If you are not using the OpenStage 5 SIP in a OpenScape Voice en-
vironment, ask the service team to provide you with the corresponding operating instructions.