Small Business Line
eSBC Small Business Line VoIP gateway
Fixed interfaces, one job, entry-level price — for sites whose wiring is not going to change again.
Not every site needs a free module slot. A dentist’s practice with one ISDN line, a workshop with two analogue phones and a fax, a branch office with a door intercom — the interface list for those sites was settled when the building was wired and is not going to change. The Small Business Line is built for exactly that case: the configuration is fixed, the price reflects it, and nothing about the device invites a later rebuild.
What does not change is the software. The Small Business Line runs the same beroNet OS as the modular eSBC line, so the web interface, the dialplan syntax, the provisioning files and the beroCloud registration are identical. A technician who has configured a modular gateway does not need to learn a second product, and a fleet can mix both lines without a second management path.
Choose the model by what is actually on the wall. Two or four BRI for an ISDN line or an ISDN PBX, one or two PRI for a primary rate connection, four FXS for analogue telephones, fax machines, alarm diallers or lift emergency phones, four FXO for an analogue provider line, and the hybrid with two BRI and two FXS for the mixed case that turns up most often in practice. Where only SIP is left on site, the eSBCSB takes the session border controller role on its own, without PSTN interfaces.
Features
- Seven fixed configurations covering BRI, PRI, analogue and the common BRI plus FXS mix, plus the eSBCSB as a pure SBC
- Same beroNet OS and the same web interface as the modular line
- Registers with beroCloud for remote configuration, monitoring and firmware updates
- Compatible with any SIP PBX, on site or hosted
- Fanless 3D-printed PETG housing, no moving parts
Technical specifications
| Configurations | SBCSB2S0 two BRI · SBCSB4S0 four BRI · SBCSB2HY two BRI and two FXS · SBCSB1PRI one PRI T1/E1 · SBCSB2PRI two PRI T1/E1 · SBCSB4XS four FXS · SBCSB4XO four FXO · eSBCSB pure SBC without PSTN interfaces |
|---|---|
| Concurrent sessions | Up to 128 transparent and up to 8 transcoded with licences; two SIP-to-SIP sessions included, four on the eSBCSB |
| Network | One 10/100 Mbit/s LAN port and one 10/100 Mbit/s WAN port |
| ISDN | Q.921 and Q.931 (EuroISDN DSS1); DSS1 with CLIP and no screening, CLIR, COLP, UUS, MCID, CD, CNIP; Q.SIG with CNIP |
| Signalling | SIP user agent per RFC 3261 over UDP or TCP, optional TLS 1.2 for signalling |
| Voice | G.711; G.729 and G.723.1 for up to four calls at a time, without licence; G.168/G.165 echo cancellation up to 128 ms; T.38 fax relay |
| Power and size | 12 V, max. 24 W; 168 x 173 x 42 mm; approx. 450 g without power supply |
| Compliance | CE, FCC and ACMA (RCM) |
Models and configurations
| SKU | Small Business Line | Concurrent sessions | PSTN channels | |
|---|---|---|---|---|
SBCSB2S0 | Two BRI | 128 / 8 | 4 | View in shop |
SBCSB4S0 | Four BRI | 128 / 8 | 8 | View in shop |
SBCSB2HY | Two BRI and two FXS | 128 / 8 | 6 | View in shop |
SBCSB1PRI | One PRI T1/E1 | 128 / 8 | 30 | View in shop |
SBCSB2PRI | Two PRI T1/E1 | 128 / 8 | 60 | View in shop |
SBCSB4XS | Four FXS | 128 / 8 | 4 | View in shop |
SBCSB4XO | Four FXO | 128 / 8 | 4 | View in shop |
eSBCSB | Pure SBC without PSTN interfaces | 128 / 8 | 0 | View in shop |
Frequently asked questions
Which model replaces the BFSB2S0 or BFSB4S0?
The SBCSB2S0 replaces the BFSB2S0, and the SBCSB4S0 replaces the BFSB4S0. Both stay in the same small-business segment with the same number of BRI ports.
Can the Small Business Line be mounted in a 19-inch rack?
No. Its housing cannot take a 19-inch rack-mount bracket. If the gateway has to go into a rack, choose a modular ISDN or analogue gateway, which can be mounted in a 19-inch rack.
Can I add ports or modules later?
No. Each model has a fixed set of interfaces and is not modular. If the interfaces at a site may still change, the modular eSBC line is the better fit.
Is it configured differently from the modular gateways?
No. It runs the same beroNet OS with the same web interface, dialplan syntax and provisioning files, and registers with beroCloud in the same way. A fleet can mix both lines.