LIFT COMMUNICATION · EXISTING INTERCOM CONNECTION
IP multi-port extension
for OTIS intercoms
A one-group extension intended for existing OTIS four-party intercoms, connecting to the duty side through the project IP network. Match the configuration to the existing intercom version, wiring and site conditions.

Match the existing intercom, then the communication setup
Brand and model names identify the intended existing intercoms; confirm the specific site version.
Existing intercom fit
Provide the model label, current wiring and four-party intercom locations for existing OTIS four-party intercoms. Check these against the single terminal group.
Network connection
List the intended device, addressing and console path for each of the three network ports. Confirm any additional-device connection against the actual configuration.
INTERCOM SYSTEM · CONNECTIONS
From the lift
to the duty station.
Lift-side intercoms connect to the duty side through an extension and the project IP network. Match the existing intercoms, network access and console configuration.

- AMachine-room intercom
- BCar-roof intercom
- CCar intercom
- DPit intercom
- 01
Lift-side intercoms
Machine room · car roof · car · pit
- 02
IP extension
This model: 1 terminal group
- 03
Project network
Confirm access and addressing
- 04
Duty station
Select the console for the setup
The four locations are intercom positions; this model has one intercom terminal group. Location count and terminal-group count describe different things. The AI-generated scene is conceptual, not a product image or a terminal or installation wiring drawing.
Three checks before connection
Existing intercom model and wiring system; the terminal group, supply and actual wiring; project network and duty-console configuration.
Original wiring references
Chinese-language originals. Open when needed.
CONFIGURATION & PARAMETERS
Panel and selection conditions
This entry is intended for existing OTIS four-party intercoms. The photo has three network ports and one intercom terminal group. Check the configuration and network conditions for any additional network device.
- Intended intercoms
- existing OTIS four-party intercoms
- Communication
- the project IP network
- Configuration
- One intercom terminal group (panel: 1局)
- Panel name
- IP multi-port extension
- Visible network ports
- Three RJ45 ports, each marked 10/100M; confirm configured use
- Intercom terminals
- 1局 (group 1): L, R, G, 12V
- Power marking
- Panel: DC12V 2A; confirm site polarity and supply
- Panel options
- 2-wire / 4-wire: both boxes unselected
Bring the existing intercom and site connection details
Existing intercom model
Provide the model label, version, lift name and original system connections for existing OTIS four-party intercoms.
Terminals and power
Photograph 1局, L/R/G/12V, the wiring-system options and power markings. Confirm actual pin assignments, polarity and version.
Network conditions
List the role of each network port, other intended devices, addressing and the console model.
MODEL & SITE FIT
Confirm the configuration for your OTIS intercoms
Provide model and wiring photos for existing OTIS four-party intercoms, with the three network-port roles, console, addressing and supply details.