LX350-MDX Hotline Auto Dialer

Auto Dialers

LX350-MDX Hotline Auto Dialer

$48.95

Ultra-compact dialer that fits inside a phone or wall jack, automatically dialing a pre-programmed number whenever the line goes off-hook.

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Volume discounts available — request a quote for pricing on bulk orders.

Free pre-programming — just enter your hotline number at checkout.

Typical Applications

1

Retrofitting Existing Phones & Wall Jacks

  • Courtesy PhonesDrops inside a phone already installed at a front desk, lobby, or waiting area, turning it into a hotline phone without replacing the handset.
  • Money Transmitter MarketFits inside existing storefront phones at check-cashing counters and remittance locations, giving every site the same instant connection to customer service.
  • Taxi PhonesWired into a curbside or lobby phone so a rider reaches dispatch the instant they lift the handset, with no number to dial.
  • Hotel Lobby PhonesInstalled inside a lobby or entrance phone to connect guests directly to the front desk or shuttle service.

Turnkey Deployment & Customization

Telongo LLC simplifies high-volume telephone deployments by delivering turnkey hotline dialer solutions tailored to a business’s operational needs:

  • 1Factory Pre-ProgrammingUnits arrive configured with the target phone number already flashed into non-volatile memory. Because settings persist even during power loss or disconnects, devices are ready to deploy straight out of the box with zero field setup required.
  • 2Ultra-Compact, Drop-In Form FactorSmall enough to fit inside a telephone or a telephone wall jack, the LX350-MDX adds hotline dialing to an existing phone without any visible hardware change.
  • 3Plug-and-Play EfficiencyBy pre-programming numbers at the factory, Telongo eliminates configuration errors, reduces field labor costs, and speeds up rollout across hundreds or thousands of agent locations, kiosks, or enterprise branches.

Specifications
Model LX350-MDX
Function Hotline Auto Dialer
Power Telephone-line powered — no external power or batteries required
Compatible Lines PBX, Centrex, standard loop-start CO line
Line Type Analog only — not for use on digital telephone systems
Memory Non-volatile E2 memory — retains programming when unplugged from the line
Max Dial Length Up to 46 digits
Form Factor Ultra-compact — fits inside a telephone or telephone wall jack

Programming

Lift the telephone handset and dial the default programming password #0* — you will hear one beep. You are now in program mode and can enter any valid program register. If you enter the password incorrectly, you will have to hang the phone, then lift the handset again and enter the program password again.

To exit program mode, dial 99, wait for the beep, and hang up. If you have previously programmed the dialer to dial when the handset is lifted, you will have to wait for it to finish dialing before entering program mode. At any time you hear four beeps, this means a program entry was incorrect.

Registers

Register Function Default Valid Entries
01 Hotline Dial Number Empty 0–9, *, #1, #2
11 Pulse Digit Handler 0 0–3
12 Off-Hook Dial Delay (ms) 750 1–3000
13 Restrict Outgoing Calls 0 0–1
14 DTMF On Time (ms) 100 50–500
15 DTMF Off Time (ms) 100 50–500
16 On-Hook Timing (ms) 800 150–1000
17 Off-Hook Timing (ms) 100 100–2000
70 Program Password #0* 0–9, *, #1
88 Restore Default Settings — —
99 Exit Programming — —

Register 01 accepts two special characters: #1 dials a literal #, and #2 inserts a 500ms pause.

Programming Examples

Program the hotline number to dial 208-639-1595

#0*                  enter program mode (1 beep)
01  beep             select register 01
2086391595           dial the number
##  beep beep        save entry

Clear the programmed hotline number

#0*                  enter program mode
01  beep             select register 01
##  beep beep        save empty entry, clearing the register

Delay dialing by 2 seconds after off-hook

#0*                  enter program mode
12  beep             select register 12
2000                 delay in milliseconds
##  beep beep        save entry

Restrict the phone to inbound calls only

#0*                  enter program mode
13  beep             select register 13
1                    restrict outgoing calls
##  beep beep        save entry

Restore factory defaults

#0*                  enter program mode
88  beep             select register 88
##  beep beep        wait for both beeps before hanging up

Need help planning your hotline dialer application?

We can help you match the LX350-MDX to your money transmitter, lobby, or courtesy phone deployment.

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