Background
NEC digital telephones configured on NEC systems such as the SV9100 or the SL2100 communicate with the NEC PBX with a unique protocol to enable a high level of interaction between the PBX and phones to integrate the operation of the display, softkeys, button labels and presses and allow centralized control of each phone. Normally, this makes it impossible to use NEC digital phones on any other PBX, and the phones must be replaced with new SIP-based IP phones. Not only does this significantly reduce the overall level of functionality available to the customer to be more like the equivalent of an analog phone, but it can often necessitate rewiring of the entire customer premise to provide CAT5 or CAT6 cabling to each phone (along with an entire ethernet switching environment).
In contrast, when deploying NEC digital phones with the UCX, no change to any NEC phone is required. The UCX is able to use its XSTIM capabilities to provide enhanced operation of the display, softkeys, button labels and presses and allow centralized control of each phone. The UCX communicates its XSTIM messaging to one or more 16 port Digital Station Modules (DSM16) and the DSM16 communicates directly with the digital telephones. Since the DSM is using IP protocol to the UCX, the DSM16s are not required to be colocated with the UCX enabling NEC digital phones to be used in remote offices or with UCX Cloud service offerings.
Supported Devices
E-MetroTel has introduced support for the following NEC digital phone models (other models may be supported in the future):
| Series | Common Name | Model (Label on Phone) |
Device Type | Description |
|---|---|---|---|---|
| DT500 | DT510 | DTK-6D | NDTK6 | 6-button digital phone with display |
| DT530 | DTK-12D | NDTK12 | 12-button digital phone with display | |
| DT530 | DTK-24D | NDTK24 | 24-button digital phone with display | |
| DT400 | DT410 | DTZ-2E | NDTZ2 | 2-line, no display |
| DT410 | DTZ-6DE | NDTZ6 | 6-button with display | |
| DT430 | DTZ-8LD | NDTZ8 | 8-line with large display | |
| DT430 | DTZ-12D | NDTZ12 | 12-button with display | |
| DT430 | DTZ-24D | NDTZ24 | 24-button with display | |
| DT430 | DTZ-32D | NDTZ32 | 32-button with display | |
| DT300 | DT310 | DTL-2E | NDTL2 | 2-line, no display |
| DT310 | DTL-6D | NDTL6 | 6-button with display | |
| DT330 | DTL-8D | NDTL8 | 8-button with display | |
| DT330 | DTL-12D | NDTL12 | 12-button with display | |
| DT330 | DTL-24D | NDTL24 | 24-button with display | |
| DT330 | DTL-32D | NDTL32 | 32-button with display |
Supported Functionality
Loop Length
The DSM16p (v5) design enables a maximum loop length of 5000 feet (~1570 meters) when using 0.5 mm (~AWG24) cable.
UCX Features
The following features have been fully tested:
- Voicemail
- Set based configuration
- Hot desking
- Conference
- Call Transfer
- Call Park
- Redial
- Call Hold
- Call Log
- Shared Call Appearance
- Distinctive ring types for internal/external calls
NEC digital phone key mapping
Limitations
Known Issues
NEC digital phones use typical RJ-11 wiring using Pin 3 for Tip and Pin 4 for Ring. However, unlike most other digital phone types supported by the DSM16, NEC digitals are polarity sensitive. Ensure that any wiring between the DSM16 and NEC digital phones has been terminated correctly if you experience any phones that do not power on, show their display, provide dial tone, do not communicate with the UCX, or otherwise appear dead.
Planned Limitations
