2.7 Connection Methods

Direct PSTN Connection

Advantages and Disadvantages

Direct PSTN connection is the easiest and most reliable method of connection. The purchase costs include the line acquisition cost, but the 2N® Lift1 operation is relatively cost-efficient (monthly fee).

Caution

  • Make sure that the line is dedicated to 2N® Lift1 only and that no other terminal equipment is connected to it.
  • The line must not be a dual or party line.

Note

  • The telephone socket including the wires is the property of the telephone provider and may not be tampered with.
  • Make sure that your follow-up cables meet the applicable safety regulations.
  • Submit the 2N® Lift1 installation report and certifications if required.
  • You are advised to protect your wires against piracy (use a phone lock, e.g.).

GSM Gateway Connection

Advantages and Disadvantages

GSM gateway connection is a rather expensive solution suitable for places without a telephone line.

Caution

  • Back up the GSM gateway against power outage.
  • Monitor the credit balance and top up your credit on time if you use a pre-paid SIM card.

Tip

  • Check the local signal coverage and quality before choosing the GSM provider.
  • Select the optimum antenna installation site.
  • Use an external directional antenna for places with a poor signal quality.
  • Ensure that the GSM gateway shall recover after power outage without requiring the PIN.
  • Secure the GSM gateway SIM card against misappropriation.

PBX Connection

Advantages and Disadvantages

PBX connection is the cheapest solution for places where a PBX is installed and a free PBX line is available. Moreover, the 2N® Lift1 operational costs are zero if there is a well- trained staff continuously present in the building and 2N® Lift1 is programmed for exclusive connection with them.

Caution

  • Check the type of PBX power outage protection because non-backed-up PBXs transfer some of their lines directly to PSTN lines in the event of power failure and 2N® Lift1 would call other destinations if a prefix is used in this case! Refer to the Tips below for solution.

To ensure that 2N® Lift1 shall make successful outgoing calls (i.e. via PSTN), follow the instructions below:

  • Make sure that the line to be used has the required authorisation (use a standard phone to check whether outgoing calls to the defined numbers can be made via this line).
  • Complete the PSTN access prefix while programming (zero as a rule) or set a direct PSTN line seizure.
  • Identify the line (extension) and type of incoming connection (dial-in, DISA, operator) and configure the PBX to allow for incoming 2N® Lift1 calls at night too (i.e. without operator).
  • Set the required authorisation for the extension to be used for calling to a mobile network (GSM).
  • Make an arrangement with the PBX owner as to operation financing
    (the 2N® Lift1 outgoing calls are at the owner's expense).

Tip

  • Operation financing can be solved by calling the "green lines" (prefix 0800).
  • The so-called automatic PSTN seizure (requiring no dial-in) is a practical solution because being connected directly to a PSTN line during power outage, 2N® Lift1 will always call the right number.