LIFT COMMUNICATION · EXISTING INTERCOM CONNECTION
IP single-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
Confirm the access point, addressing and console path for the single network port. Check intercom terminals and network connections separately.
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 intercoms. Its photo shows an IP network extension V1.0 with one terminal group. Match the existing intercom model and wiring before selecting the configuration.
- Intended intercoms
- existing OTIS four-party intercoms
- Communication
- the project IP network
- Configuration
- One intercom terminal group (panel: 1局)
- Panel name
- IP network extension V1.0
- Visible network ports
- One RJ45 port, marked 10/100M; confirm configured use
- Intercom terminals
- 1局 (group 1): L, R, G, 12V
- Power check
- Panel: GND, 12V. Text entry: DC12V 2A. Confirm the actual 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
Provide the single-port access location, addressing, console model and network path.
MODEL & SITE FIT
Confirm the configuration for your OTIS intercoms
Provide model and wiring photos for existing OTIS four-party intercoms, with the network access point, console, addressing and supply details.