1.1 Product Description

The 2N® Enterprise / BRI Lite GSM gateway provides direct interconnection of the ISDN with GSM networks. It can also be used for direct interconnection of an ISDN PBX with a GSM network, ISDN telephone set and, via a terminal adapter, with an analogue apparatus or coin machine. The voice mode, i.e. outgoing and incoming calls, is the basic function of the gateway. Moreover, the BRI gateway provides connection to the VoIP-SIP networks. The gateway is equipped with all functions necessary for this mode and is very user-friendly. In addition, 2N® BRI Enterprise / BRI Lite allows you to send and receive SMS messages. No additional devices (an external telephone, e.g.) are required for normal operation. All gateway parameters can be set using a configuration program (on an enclosed CD), or using the AT commands. Programmable parameters are pre-set to make it possible to make calls as soon as the supply cable, antenna a SIM cards are connected.

2N® BRI Enterprise / 2N® BRI Lite Differences

The 2N® BRI Enterprise and 2N® BRI Lite gateways are based on one and the same type of hardware and apply identical firmware and control (configuration) software. The only difference lies in the count of BRI ISDN interfaces:

Interface

2N ® BRI Lite

2N ® BRI Enterprise

BRI ISDN

1 (NT/TE)

2 (1 TE ; 1 NT)

Ethernet

YES*

YES*

*The VoIP-SIP support depends on Part No. (subject to licence).

Telephone Cost Cuts

  • Having connected 2N® BRI Enterprise / BRI Lite to your ISDN PBX, you can make calls to the mobile network directly. This saves your PSTN – GSM connection costs.
  • You do not pay for barred calls. You can set groups of barred numbers in the gateway.
  • A flexible setting of the Least Cost Router helps you call GSM numbers at minimum operational costs.
  • You can route calls to alternative providers' networks via the VoIP/SIP interface.
  • As all gateway user calls are added up for billing purposes, you are advised to use the most advantageous tariff offered by your provider.

2N® BRI Enterprise / 2N® BRI Lite Basic Features

  • Integration of the best features of two communication technologies: ISDN and GSM
  • VoIP–SIP telephony support with G.711a/u and G.729ab codecs [1]
  • Intelligent routing of incoming and outgoing calls
  • Web interface for gateway configuration and SMS sending/receiving
  • Automatic no answer SMS sending for GSM networks
  • Automatic missed call SMS in the GSM network
  • Simple recording of a welcome note, DISA voice message
  • Automatic recording of call data and detailed statistics (CDR)
  • ENBLOCK/OVERLAP ISDN dialling switch option
  • Monitoring of ISDN BRI line statuses and alarm SMS sending option
  • Automatic sending of Alive SMS in user-defined intervals
  • Easy firmware upgrade via a configuration program
  • External synchronising source connection option (BRI Enterprise)
  • Mobility Extension support [2].
  • SNMP error traps [1]
  • Sending/receiving SMS via SMTP/POP3 [1]
  • Sending/receiving SMS via SMPP [1]

[1] Depending on the licence

[2] Will be available in early 2013

DialThru (2N® BRI Enterprise)

The difference between 2N® BRI Enterprise and 2N® BRI Lite lies in the DialThru functionality. DialThru enables the gateway to be connected between the PBX and the voice service provider line, i.e. PSTN. The GSM gateway in the DialThru mode routes, based on the LCR, calls into the PSTN or GSM/UMTS networks.

Refer to the figure below for a schematic diagram of the 2N® BRI Enterprise connection.

The gateway works as a dial-through router (using both the TE and NT ports in the DialThru mode) for calls to a mobile network, and a monitoring system, which, with the appropriate licence, sends SMS to the provider (in the case of line unavailability, e.g.).

The 2N® BRI Lite GSM gateway contains just one ISDN BRI port and thus cannot work in the DialThru mode. It can be connected to a PBX on a trunk line or extension and route calls to the GSM/UMTS networks only – see the figure below.