Protected VoIP Gateway, IP PBX and Voice/Data Router
OPTOKON LMSB — 14.1 G is a rugged switchboard-extension gateway designed for creating tactical and industrial communication systems that combine analog, digital, and IP lines.
The device can operate as:
- an analog VoIP gateway,
- an IP or ISDN PBX,
- a voice and data transmission gateway (voice & data router).
The enclosure is built with a rugged metal design, ensuring operation in extreme conditions: vibration, dust, moisture, and abrupt temperature changes. The LMSB-14.1 G can be installed in vehicles, mobile communication units, or stationary network nodes.

Main Specifications
- OS: Linux with Asterisk PBX
- Functions: SIP trunking, VoIP gateway, PSTN access
- Interfaces:
- 1× WAN (RJ-45 or FO HMA)
- 1× LAN RJ-45
- FXS ports for analog phones
- FXO ports for connecting to public/PBX lines
- E & M ports for integration with radio systems
- 1× E1 digital line
- Console port
- Power supply: 10.5–36 V DC (typically 24 V)
- Optional: GSM module (4 channels)
- Enclosure: rugged, shock- and moisture-resistant
- NATO Supplier Code: 1583G

Available LMSB-14.1 G Configurations
| Model | WAN Port | LAN Port | FXS / FXO | E&M | E1 | Power | Additional Options |
| LMSB-14.1G-UTP-16-02-04-E1-DC24 | 1× RJ-45 10/100Base-T(X) | 1× RJ-45 10/100Base-T(X) | 2× FXS / 3× FXO | Yes | 1× E1 | 24 V DC | Optional 4-channel GSM module |
| LMSB-14.1G-FO1-16-02-04-E1-DC24 | 1× FO HMA (1G) | 1× RJ-45 10/100Base-T(X) | 2× FXS / 3× FXO | Yes | 1× E1 | 24 V DC | Optional 4-channel GSM module |
Key Features
- Hybrid platform: integrates analog, digital, and IP communication lines
- VoIP and SIP trunking: full compatibility with modern IP telephony systems
- FXS / FXO / E & M interfaces: support for phones, PBX, and radio systems
- E1 digital line: integration with existing PBX or base stations
- Optical uplink: connection via HMA Expanded Beam connector
- Asterisk PBX: reliable enterprise-grade Linux solution
- Mobility: operates from 10.5–36 V DC, suitable for installation in vehicles
- Redundancy: can be powered from an external DC source or via PoE
Applications
- Tactical communication centers and mobile command posts
- Field communication systems and vehicle-mounted communication units
- Industrial networks, energy sector, transportation
- Integration of analog phones into IP networks (FXS / FXO)
- Radio gateways for interaction between analog and digital communication systems

FAQ — Frequently Asked Questions
1. What is the main purpose of the LMSB-14.1 G?
It is a universal rugged communication gateway that can operate as a VoIP gateway, IP PBX, or router. It integrates analog phones, E1 digital lines, and an IP network into a single system.
2. What is the difference between FXS, FXO, and E&M ports?
- FXS — for connecting analog telephones.
- FXO — for connecting to external telephone lines or PBX.
- E & M — for connecting radio systems or military switchboards.
3. Can the LMSB-14.1 G be used as a full-fledged IP PBX?
Yes. The device runs Asterisk PBX on Linux and supports SIP trunking, internal extensions, call routing, and voicemail.
4. How is the device connected to the network?
Two options are available:
- via RJ-45 Ethernet port (UTP),
- via optical HMA Expanded Beam port (FO1) — for field or tactical networks.
5. Can the LMSB-14.1 G be used in vehicles or outdoors?
Yes. Thanks to its rugged enclosure and wide power range (10.5–36 V DC), it can be installed in vehicles, containers, or mobile communication stations.
6. Is GSM integration available?
Yes. An optional 4-channel GSM panel is available, allowing the creation of backup channels or a GSM-to-SIP gateway.
7. Which protocols are supported?
SIP, RTP, IAX, TDM (E1), SNMP, syslog, VLAN, QoS — full integration with existing systems.
8. Does the device support non-standard power sources?
Yes. The LMSB-14.1 G supports 10.5–36 V DC input, enabling operation from mains power, batteries, or 24 V vehicle systems.
9. Can software or configuration be updated?
Yes. Management is performed via web interface or console port; software updates are done locally through Linux Asterisk.
10. Is the device certified for defense and industrial applications?
Yes. The LMSB-14.1 G is manufactured by OPTOKON (NATO Supplier Code 1583G) and meets MIL-STD-810G standards for vibration, temperature, and mechanical resistance.
Get a customized LMSB — 14.1 G configuration tailored to your needs — from IP telephony to field communication systems.
Contact our sales department: info@optokon.ua
We will prepare full technical documentation and expert consultation.
