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September 08, 2026 5 min read
Connect a telephone system to the ABB-Welcome door communication system — full programming and operation reference for the 83350-500 Telephone Gateway.
Installation and programming manual for the ABB-Welcome Telephone Gateway (83350-500) — connects a telephone system to the ABB-Welcome door communication system so ordinary telephones can act as audio indoor stations.
Warning — Electric voltage: Risk of death and fire due to electric voltage of 230 V. Work on the 230 V supply system may only be performed by authorized electricians. Disconnect the mains power supply prior to installation and/or disassembly. Low-voltage and 230 V cables must not be installed together in a flush-mounted socket — in case of a short-circuit there is a danger of a 230 V load on the low-voltage line.
The Telephone Gateway is an analogue subscriber of your telephone system (PBX). It includes a telephone book linking every indoor station address (bell button) to up to two phone numbers — a Primary and a Secondary number — and can also redirect all calls to a single Default phone number.
The Telephone Gateway has terminals for the ABB-Welcome system bus and separate telephone line clamps for the PBX. The gateway is always set as master; any other indoor stations in the same apartment must be set as slave.
System security note: Configure your telephone system so the Telephone Gateway cannot be called directly from an external line — this prevents unauthorized access by intruders. If external access is required, activate the Indoor Station PIN.
The device must be installed only on mounting rails per DIN EN 50022, by an electrician following the "five safety rules" (DIN VDE 0105, EN 50110): disconnect the power, secure against reconnection, verify no voltage is present, connect to earth, and cover or barricade adjacent live parts. Use suitable personal protective equipment and only appropriate tools and measuring devices.
Required components: an ABB-Welcome system (system controller + at least one outdoor station), a PBX with an analogue input, and at least one telephone for DTMF configuration. Two commissioning options are available: via telephone (DTMF commands, below), or via internet browser and IP-Gateway 83342-xxx.
Call the gateway via the PBX, then enter [*][*][*] Admin PIN [#] (default Admin PIN 1234) to enter programming mode.
| Function | Command |
| Set Default phone number | [7][3][6][*] Default phone number [#] |
| Add a new indoor station to phonebook | [2][4][7][*] Indoor station number [#] (1–250) |
| Add a range of indoor stations | [2][4][7][7][*] Station # 1 [*] Station # 2 [#] |
| Add/change Primary & Secondary phone number | [2][*] Station # [*] Primary # [*] Secondary # [#] |
| Add/change Primary phone number only | [2][*] Station # [*] Primary # [#] |
| Activate "Direct-accept" feature | [7][3][2][1][#] |
| Deactivate "Direct-accept" feature | [7][3][2][0][#] |
| Set new Admin PIN | [7][*][*][*] New Admin PIN [*][*][*] New Admin PIN [#] |
| Set new Master PIN | [7][*][*] New Master PIN [*][*] New Master PIN [#] |
| Activate mandatory Indoor Station PIN | [7][4][7][1][#] |
| Deactivate mandatory Indoor Station PIN | [7][4][7][0][#] |
| Set new Indoor Station PIN | [*] Station # [*][7][*] New PIN [*] New PIN [#] |
| Set Telephone Gateway identifier (for IP-Gateway/PC programming) | [7][4][3][*] ID [*] ID [#] (1–99, must be unique) |
| Reset to factory settings | [7][3][7][8][*] Admin PIN [#] |
After programming, users operate the system directly from a connected telephone.
| Function | Command |
| Accept an incoming call from the outdoor station | [1][#] |
| Open default lock (during a call) | [3][#] |
| Open 2nd lock (during a call) | [2][#] |
| Control switch actuator | [5][1][#] to [5][199][#] |
| Call an outdoor station | [1][1][#] to [1][9][#], or [1][#] for outdoor station 1 |
| Call the last call-in outdoor station | [1][0][#] |
| Open default lock of a specific outdoor station | [3][1][#] to [3][9][#] |
| Open default lock of last call-in outdoor station | [3][0][#] |
| Call Guard Unit | [4][#] |
| Activate Default/Primary/Secondary phone number | [*] Station # [6][0][#] / [6][1][#] / [6][2][#] |
| Activate Call Divert to Default number (admin) | [*][*] Master PIN [*][6][0][#] |
| Deactivate Call Divert to Default number (admin) | [*][*] Master PIN [*][6][9][#] |
When an Indoor Station PIN is required, most commands above are prefixed with [*] Indoor station number [*] Indoor station PIN [*] before the rest of the command.
| Single-wire clamps | 2 x 0.28 mm² – 2 x 0.75 mm² |
| Fine-wire clamps | 2 x 0.28 mm² – 2 x 0.75 mm² |
| Telephone line clamps | 0.2 mm² – 1.5 mm² |
| Bus voltage | 28 V ± 2 V |
| Size | 4 TE (90 x 72 x 65 mm) |
| Protection | IP20 |
| Operating temperature | -25 °C to +55 °C |
Used electric and electronic devices must not be disposed of with domestic waste — dispose of them at appropriate collection depots per EU WEEE/RoHS and REACH regulations.
Contact ABB Low Voltage Products USA Technical Support at 888-862-3289 or techsupport@tnb.com, Monday–Friday 7:00 a.m.–5:30 p.m. CST, or visit www.abb.us/lowvoltage.
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