The SBC

Base Models

The beroNet Session Border Controller has 3 different Base Models:

Model	Session Maximum	Module Expansion Slots
BNSBC-M	8	2
BNSBC-L	32	3
BNSBC-XL	64	3

The BNSBC-M has 2 expansion module slots and the BNSBC-L and BNSBC-XL have 3 expansion module slots. For each module, a block of 4xRJ45 connectors are installed. What kind of modules can be installed is described in the next chapter.

The back side of the SBCs are the same for all models (except that the BNSBC-L and BNSBC-XL are a bit wider compared to the BNSBC-M):

The SBC features

2x LAN ports (LAN and WAN)
PCM connector, which can be used to connect 2 SBCs to share PSTN data and timing and to perform a hardware factory reset with a jumper on the 8th row.
See more under How to do a Hardware Factory Reset (Gateway V2 / SBC - VoIP Gateway) Page.
MicroSD slot which is currently not used and a 12V DC power connector (24W maximum usage).

Opening the SBC

If you need to open the SBC in order to add/remove expansion modules, you need to detach the front panel with 4 screws and remove the top panel as shown in the picture:

You can see the 3 module slots and corresponding 3 module connectors.

Modules

All Modules that fit in the beroNet Gateway and Card can also be used in the beroNet SBC:

Hybrid: 2BRI + 2FXS (BNMO-2HYB)
Analog: 4FXS / 8FXS / 4FXO
Mobile: 2GSM / 2LTE
ISDN (high precision +- 2.5PPM): 4BRI / 2PRI (E1/T1) / 1PRI (E1/T1) / 1E1 / 2E1

Starting in 2021, the 1E1 and 2E1 modules are also equipped with a high precision clock.

Module Connectors

Depending on the Module different Connectors are used within the Gateway:

Connector	Pictures	Can be used with Modules
BNSBCPLUG		BNMO-4BRI BNMO-2HYB (2xBRI, 2xFXS) BNMO-4FXS BNMO-4FXO
BNSBCPLUGPRI		BNMO-1PRI BNMO-2PRI BNMO-1E1 BNMO-2E1

Connector Port Layouts

The following schema shows which module port is located on each connector port respectively:

Module Connector Pin Layouts

BNMO-4BRI (4x BRI/ISDN)

The BNMO-4BRI module has 4 ISDN/BRI ports. The module can be configured individually for each port to NT (Network Termination) or TE (Terminal Equipment) mode.
In either mode the module supports Point-To-Multi-Point (PMP) or Point-To-Point (PTP). The TE/NT mode as well as the line-termination of 100 OHMs are selectable via software (jumper free).

The ISDN Ports use the following RJ45 Pins:

Port X
PIN	Usage
3	TX+
4	RX+
5	RX-
6	TX-

BNMO-xPRI and BNMO-xE1 (1,2 ports ISDN PRI)

The BNMO-xPRI modules are available as 1 port or as 2 port variants. The modules can be configured individually for each port to NT (Network Termination) or TE (Terminal Equipment) mode. If you want to use NT-mode you may need a cross cable which is optionally available (BNE1Cross).
Line termination (120 ohm) is selectable for each port by DIP switches on the module(2 per port).

The BNMO-xPRI have are equipped with a high precision clock with +- 2.5ppm.
Starting in 2021, the 1E1 and 2E1 modules are also equipped with a high precision clock.

Port 1		Port 2
PIN	Usage	PIN	Usage
1	RX-	1	RX-
2	RX+	2	RX+
4	TX-	4	TX-
5	TX+	5	TX+

BNMO-4FXS (4 ports analog FXS)

The BNMO-4FXS module is a 4 port FXS module for the beroNet baseboards and boxes. The BF4FXS module is used by small and medium enterprises which need internal analog FXS ports to connect analog phones, faxes and modems.

Port X
PIN	Usage
4	TIP
5	RING

BNMO-4FXO (4 ports analog FXO)

The BNMO-4FXO module is a 4 port FXO module for the beroNet mainboards and boxes. The module provides 4 FXO (Foreign Exchange Office) ports for the beroNet SBC.

It can be used to connect a SoftPBX to the PSTN as well as a traditional PSTN based PBX. It is fully compatible and can be combined with all beroNet modules, cards and boxes.

Port X
PIN	Usage
4	RING
5	TIP

BNMO-HYB (2 ports ISDN BRI + 2 ports analog FXS)

The BNMO-HYB Hybrid Module is a 2 Port BRI and 2 Port FXS Module for the beroNet Baseboards and Boxes. Each BRI port can be configured as NT (Network Termination) or TE (Terminal Equipment). In both modes, each BRI port can operate in Point-to-Multi-Point (PMP) or in Point-to Point (PTP) mode. The switching of the TE / NT mode and the deactivation of the termination resistors can easily be set in the software (Jumper Free) which makes the troublesome repositioning of jumpers unnecessary. Additionally the module provides 2 ports FXS (Foreign Exchange Station) for the beroNet Gateway. FXS interfaces are used to connect devices like analog phones or faxes to your beroNet SBC.

Port BRI-1, BRI-2 (ISDN)		Port FXS-1, FXS-2 (FXS)
PIN	Usage	PIN	Usage
3	TX+	4	RING
4	RX+	5	TIP
5	RX-	-	-
6	TX-	-	-

Quick Installation

For further Information on how to assemble new modules refer to the Quick Installation Guide:

beroNet Documentation

Physical Setup - SBC