Simgenet SMG PBX Server
Simgenet SMG PBX Server
The Simgenet SMG PBX Server is an in-house developed enterprise phone system that brings all of your organization's voice communication together in one modern platform. Extensions, external call trunks, voice menus, call queues and conferencing are all covered on a single system; if you wish, an AI-powered voice assistant can answer calls automatically. Your calls are protected with encryption and secured against fraud and toll-abuse risks. It grows from a small office to an organization with tens of thousands of users; installation, maintenance and support are provided from Türkiye with Simgenet assurance.
Simgenet SMG PBX Server
The Simgenet SMG PBX Server is a modern enterprise phone system that lets you manage all of your organization's voice communication from a single place. From your employees' extensions to the external trunks that connect you to your operator, from voice menus and call queues to conference calls, it brings together on one platform every telephony feature an organization needs. It works with IP phones of different brands and models; as your organization grows, you can easily add new users and features. The product is entirely developed in Türkiye; installation, maintenance and technical support are provided with Simgenet assurance.
Embedded AI Voice Assistant
The most distinctive feature of the product is the AI voice assistant embedded in the panel. With components that convert speech to text (STT), interpret it with a large language model, and turn text back into speech (TTS), it provides IVR automation, call summarization, automatic conference joining and an organization-specific trainable knowledge base. The AI Studio module allows these scenarios to be managed and trained from the web interface.
Announcement System and How It Works
The announcement (paging) system of Simgenet SMG PBX Server is a powerful module that enables live, one-way voice announcements across an entire facility. Announcement points are organized geographically and functionally into a hierarchy of region, group and terminal (announcement station). When an operator starts an announcement, all speaker and terminal points in the selected group are automatically joined to an Asterisk ConfBridge conference room; when the operator speaks, every point in the group listens at the same time. Terminal microphones are muted by default, keeping the announcement one-way and clear.
For high capacity, announcements are not squeezed into a single room; groups are distributed across multiple conference rooms to reach thousands of points reliably, and more than 2,000 concurrent points have been verified in Simgenet's R&D tests. Live participation state is kept in real time on Redis, while region, group and permission configuration is managed in the database. Thanks to role-based authorization, the global administrator manages all regions, a regional administrator manages only their own region, and the control-room operator only makes announcements. Announcement terminals run dedicated station software with acoustic echo cancellation (AEC) to prevent feedback problems in loud environments.
Security — 7-Layer Defense
The security of Simgenet SMG PBX Server is designed with a defense-in-depth approach. The Kamailio-based SIP security gateway repels external attacks, while intrusion prevention, firewall, geographic filtering, threat feed and toll-fraud protection prevent unauthorized access and abuse. All voice communication is encrypted end to end with SIP/TLS and SRTP, the system is protected by ClamAV antivirus and rootkit scanning, and every action is recorded in the audit log. Enterprise authentication is centrally handled through RADIUS, LDAP and TACACS+, and authorization is handled by a role-based permission matrix.
Management and Ease of Use
The management interface is comprehensive yet simple and user-friendly. Thanks to its Excel-like matrix table structure, complex configurations (user and permission, line and profile, rule and condition mappings) are managed easily on a single screen. All operations are carried out from one panel through the dashboard, lines and users, routing, paging, calls, monitoring and reports, security, AI Studio and storage modules.
Scalability and Integration
The product uses the same codebase from the single-server SMG PBX Edge edition to the distributed SMG PBX Server edition designed for large enterprises. With its Kamailio and multi-node Asterisk cluster architecture, it scales from 100 users to 100,000 users and provides high availability with N+1 redundancy. Call recordings are archived on the Simgenet SMG Unified Storage server (S3); it integrates with ISP SIP lines, gateways and CRM systems.
| Engine / Platform | |
| Call Engine | Asterisk 22 LTS (B2BUA + media bridge) |
| SIP Security Gateway | Kamailio 5.6.3+ (external SIP gateway, port 5061 TLS) |
| Operating System | Simgenet appliance (Debian Linux based) |
| Role | Protocol/codec converter — clients with different encryption/transport/codec interoperate simultaneously |
| Product Family (single codebase, EDITION flag) | |
| SMG PBX Edge | Small-medium business (5–100 extensions) |
| SMG PBX Server | Medium-large enterprise (100–10,000+ extensions) |
| SMG UC Appliance | Proxmox + firewall + Edge VM (unified communications) |
| SMG AI Module | GPU AI add-on (voice assistant) |
| SIP / Signaling | |
| SIP | RFC 3261 · UDP / TCP / TLS · PJSIP |
| TLS Ports | Kamailio 5061 (external) · Asterisk 5062 (internal) |
| Methods | REGISTER, INVITE, REFER, SUBSCRIBE/NOTIFY, MESSAGE |
| Realtime | PJSIP realtime (DB-backed endpoints) |
| Media / Encryption | |
| Media | RTP / SRTP |
| SRTP Keying | SDES (RFC 4568) · DTLS-SRTP (RFC 5764, WebRTC) |
| TLS | TLS 1.2/1.3 · ECDHE-RSA-AES256-GCM-SHA384 |
| Transcoding | Codec conversion (e.g. Opus ↔ G.711) |
| Client Profiles (concurrent) | |
| WebRTC | WSS (TLS/WebSocket) · DTLS-SRTP (mandatory) · Opus/G722/G711 — browser softphone |
| Secure-IP | TLS 5061 · SRTP (SDES) · Cisco/Yealink/Grandstream (TLS) |
| Classic-IP | UDP/TCP · classic IP phones |
| Auto | Automatic profile detection (AMI REGISTER listener) |
| Audio Codecs | |
| Wideband | Opus · G.722 (HD voice) |
| Narrowband | G.711 (A-law / µ-law) · G.729 |
| NAT Traversal | |
| Methods | STUN / TURN / ICE |
| Telephony Features | |
| Extensions | PJSIP / SIP · user group + profile |
| Trunks | SIP / PJSIP · TLS + SRTP · DID / inbound-outbound routing |
| IVR | Multi-level voice menu · time conditions · follow-me |
| Call Queue (ACD) | Queue / call distribution · ring groups |
| Conference | ConfBridge · AI auto-join · room codes |
| Paging | Live + scheduled + triggered group paging · high-capacity listener (2,000+ concurrent, R&D-proven) · zone/tenant filtered · text-to-speech (TTS) announcements · priority/collision handling |
| Call Transfer | REFER (RFC 3515) · attended / blind |
| BLF | SUBSCRIBE/NOTIFY (dialog-info) · phone LED |
| Voicemail | Voicemail · MWI (RFC 3842) · email notification |
| Extra | Park · Pickup · DND · Dial Plan |
| AI Voice Assistant (AI Studio) | |
| Engine | STT (speech-to-text) + LLM + TTS (text-to-speech) |
| Capabilities | IVR automation · call summary · automatic conference join |
| Knowledge Base | Organization-trainable RAG knowledge base |
| Studio | Web-based scenario/flow/training management |
| Security — 7-Layer Defense-in-Depth | |
| Secure Mode | Mandatory encryption mode (unencrypted registration rejected) |
| SIP Security Gateway | Kamailio — topology hiding · rate limiting · SIP filtering |
| Intrusion Prevention (IPS) | Real-time attack detection + auto-blocking (fail2ban class) |
| Toll-Fraud Protection | International/abnormal call detection + blocking |
| AAA (Enterprise Identity) | RADIUS / LDAP / TACACS+ central identity |
| Threat Feed | Live threat / IP-reputation feed |
| Firewall | Host firewall + GeoIP filtering |
| Antivirus | ClamAV malware scanning |
| Rootkit Scan | System integrity / rootkit checks |
| TLS Certificate Management | Root CA + server certificate · auto-renewal |
| Authorization / Audit | RBAC permission matrix + audit log · two-layer password (web admin given, OS root withheld) |
| CDR / Monitoring / Reporting | |
| CDR / CEL | Call-detail + event records |
| Retention | Monthly partitioning + 10-year retention (automatic maintenance) |
| Monitoring & Reports | Live dashboard · call statistics · extension event logs (CSV/TXT) |
| Recording | |
| Targets | Local + SFTP / NFS / SMB / S3 · retention |
| Integration | Archive with Simgenet SMG Storage (S3) |
| Scalability and Capacity | |
| Node Capacity | ~2,000 concurrent calls / node (8 vCPU / 23 GB, proven) |
| Scale | From 100 to 100,000 users — Kamailio + multi-Asterisk cluster |
| High Availability | Distributed, N+1 redundant, automatic failover |
| Federation | Zero-touch SMG PBX merge (across branches) |
| Web Management Panel (Modules) | |
| Management Experience | Comprehensive yet simple — Excel-style matrix tables (user × permission, line × profile, rule × condition); powerful, user-friendly single panel |
| Main Modules | Dashboard · Lines & Users · Routing · Paging · Calls · Monitoring & Reports · Security · AI Studio · Storage |
| System | License · System Health · Users · Network · PBX Settings · PJSIP+Conference Tunables · Service On/Off · Maintenance & Updates · Config Backup · Logs · Permission Matrix |
| Monitoring | SNMP + custom MIB / NMS integration |
| Compliance and Deployment | |
| Legal Compliance | BTK · KVKK |
| Deployment | ISO / .deb + APT repo |
| Backup | Config backup + disaster recovery (automatic scheduled) |
| Integration | Phone / ISP / gateway / CRM · SMG Storage |
| Environmental | |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -40°C ~ +70°C |
| Relative Humidity | 10% ~ 95% (non-condensing) |
| EMC and Compliance | |
| EMC Emission | TS EN 55032:2015+A11:2020 (Class A) |
| EMC Immunity | TS EN 55035:2017+A11:2020 |
| ESD (IEC 61000-4-2) | Level 3 |
| Radiated RF (IEC 61000-4-3) | Level 3 |
| EFT/Burst (IEC 61000-4-4) | Level 3 |
| Surge (IEC 61000-4-5) | Level 3 |
| Conducted RF (IEC 61000-4-6) | Level 3 |
| Magnetic Field (IEC 61000-4-8) | Level 3 |
| Voltage Dips (IEC 61000-4-11) | Level 3 |
| Harmonics | TS EN IEC 61000-3-2:2019+A1:2021 |
| Flicker | TS EN 61000-3-3:2013+A2:2021 |
| Safety (LVD) | TS EN 62368-1:2020+A11:2020 |
| RoHS | TS EN IEC 63000:2018 |
| EU Directives | 2014/30/EU (EMC), 2014/35/EU (LVD), 2011/65/EU+2015/863/EU (RoHS) |
| Target Segment and Use Cases | |
| Target Segment | Enterprise / campus · call center · multi-branch business · hotel/hospital/factory |
| Use Cases | Enterprise IP telephony · call center (IVR/queue) · conferencing + AI assistant · branch-HQ SIP · paging |