A2P Messaging
SMS Campaigns & Bulk Messaging
Platform for enterprise A2P messaging campaigns with scheduling, personalisation via custom variables, DLR tracking, audience segmentation, and real-time analytics dashboards. Designed for brands, enterprises, and aggregators running high-volume programmes.
- Multi-route failover for maximum deliverability
- Template management with dynamic custom variables
- Opt-out and STOP keyword handling (compliant)
- DLR tracking with per-message status reporting
- Throughput up to 15,000 SMS/sec on a single node
- Campaign scheduling, rate-capping, and analytics
Protocol Bridge
SMPP↔SIP Gateway
Bidirectional protocol bridge converting SMPP messaging to SIP MESSAGE and vice versa. Enables interoperability between SMS aggregators, mobile operators, and VoIP networks — all in a single, carrier-grade process with no single point of failure.
- Full SMPP 3.4 server and client implementation
- TLS encryption on both SMPP (port 2777) and SIP legs
- Multi-bind support for redundant aggregator connections
- Transparent delivery report propagation (DLR)
- GSM-7 and UCS-2 encoding with correct segment billing
- Configurable TPS limiting per bound system ID
Rich Messaging
RCS — Rich Communication Services
Next-generation messaging beyond SMS. Deliver rich media cards, suggested replies, carousels, and branded sender identity directly to Android devices. Integrates all major RCS aggregators and falls back gracefully to SMS when RCS is unavailable on the handset.
- Google RBM, Infobip, Twilio, and Sinch adapters
- Rich cards, carousels, and suggested action buttons
- Branded sender with verified business identity
- Automatic SMS fallback when RCS is unavailable
- HMAC-verified webhooks for incoming events
- MaaP server with TLS and OAuth 2.0 Bearer auth
OTT Messaging
WhatsApp Business API (Meta)
Enterprise WhatsApp integration via Meta's official Business API (Cloud API and On-Premises). Send pre-approved templated messages, interactive buttons, and rich media to opted-in customers at scale. Full compliance with Meta's messaging policies and rate windows.
- Pre-approved message template management
- Interactive quick-reply and CTA buttons
- Image, video, document, and audio message support
- Delivery, read, and failure receipt forwarding
- Meta policy enforcement and opt-out management
- Unified CDR alongside SMS and voice billing
Multi-layer SMS security platform protecting subscribers and operators from spam, smishing, spoofed sender IDs, and grey-route bypass traffic. Combines real-time SS7 STP inspection, pattern-matching rules, and machine-learning-assisted anomaly detection.
- Real-time SS7 STP (Signalling Transfer Point) inspection
- A2P traffic identification and policy enforcement
- Sender ID spoofing and grey-route detection
- GeoIP-based routing rules and country-level blocks
- Custom keyword and regex-based content filtering
- Reporting dashboard with per-origin traffic analytics
Voice Core
VoIP Routing & Billing
Full carrier-grade VoIP platform integrating AAA billing, least-cost routing, quality-based routing, and real-time balance management. Built on FreeRADIUS with a custom C module delivering sub-50ms authorisation latency at 5,000 calls per second.
- LCR, quality-based, and weighted routing algorithms
- Prefix trie routing engine supporting 5,000 CPS
- Real-time balance deduction with race-free mutex locking
- 30,000 concurrent channels with per-call tracking
- Failover dial strings with stop-hunting controls
- CDR pipeline to multiple storage backends
SIP Infrastructure
Session Border Controller (SBC)
Custom-built SBC based on Kamailio and RTPEngine handling SIP normalisation, topology hiding, media anchoring, transcoding, NAT traversal, and DTMF interworking. Protects your core network from external SIP threats and ensures interoperability across disparate carriers.
- SIP normalisation and header manipulation
- Topology hiding — no internal IP exposure
- RTPEngine media anchoring and transcoding
- NAT traversal for behind-firewall endpoints
- DTMF RFC 2833/SIP INFO interworking
- Integrated SIP firewall and DoS/DDoS protection
Voice Delivery
Ringless Voicemail (RVM)
Deliver pre-recorded voice messages directly to a subscriber's voicemail inbox without causing the handset to ring. Used for appointment reminders, debt collection, and non-intrusive marketing. Carrier-compliant delivery via direct-to-voicemail SIP routes.
- GSM, WAV, and MP3 audio file support
- Campaign scheduling with rate controls
- Per-message delivery report and CDR generation
- TCPA compliance controls and opt-out lists
- Retry logic with configurable attempt windows
- REST API for programmatic campaign creation
Hosted Voice
PBX Services
Hosted and on-premise PBX solutions for enterprise customers. Includes auto-attendant, ring groups, call queues, IVR menus, call recording, voicemail-to-email, extension management, and SIP trunk connectivity for PSTN access via your own carrier network.
- Auto-attendant with configurable business hour schedules
- Ring groups and ACD call queues
- DTMF IVR menus with custom audio prompts
- Call recording with encrypted storage
- Voicemail-to-email transcription and forwarding
- SIP trunk connectivity to PSTN via platform routes
AI Voice
Text-to-Speech (TTS)
Convert text to natural-sounding voice for IVR prompts, voicemail greetings, and notification calls. Integrates AWS Polly, Azure Cognitive Speech, OpenAI TTS, and ElevenLabs. Select from 50+ languages and dozens of male and female neural voices.
- AWS Polly — standard and neural voices
- Azure Cognitive Speech — 400+ neural voices
- OpenAI TTS — alloy, echo, fable, onyx, nova, shimmer
- ElevenLabs — ultra-realistic voice cloning
- 50+ languages; SSML markup support
- Audio caching to reduce API cost and latency
Signalling
SS7 Signalling Gateway
Full SS7/SIGTRAN stack implementing M3UA, SCCP, TCAP, and MAP. Enables HLR lookups (IMSI/MSISDN), SRI-SM routing info queries, MNP/LNP lookups, and SMS delivery over legacy TDM and modern IP networks. Essential for operator interconnects and MVNO integration.
- Full M3UA / SCCP / TCAP / MAP protocol stack (jSS7)
- HLR queries: IMSI, MSISDN, and subscriber location
- SRI-SM (Send Routing Info for SM) for SMS routing
- ISUP trunk signalling for voice interconnects
- Bridge between TDM (E1/T1) and IP SIGTRAN networks
- Internal message bus to SMS routing engine for MT delivery
Online Charging
Diameter OCS (3GPP Gy/Ro/Gx)
Online Charging System implemented via the Diameter Gy/Ro interfaces for real-time prepaid credit control for 4G LTE and 5G SA traffic. The Gx interface connects to the PCRF for dynamic quality-of-service policy enforcement across bearers and sessions.
- Diameter Gy/Ro — real-time credit-control requests (CCR)
- Gx — PCRF policy and QoS enforcement
- Prepaid balance management with session quotas
- Supports 4G LTE EPC and 5G SA charging
- Realm-based routing for multi-operator federation
- Integrates with platform balance and CDR pipeline
Mobile Core
Mobile Core (4G EPC & 5G SA)
Complete Open5GS-based mobile core supporting both 4G LTE Evolved Packet Core and 5G Standalone Architecture per 3GPP Release 16. Run your own MVNO or private mobile network with HSS, MME, SGW, PGW, AMF, UDM, AUSF, PCF, NRF, and UPF all included.
- 4G LTE EPC: HSS, MME, SGW-C/U, SMF, PCRF, UPF
- 5G SA: NRF, SCP, AMF, AUSF, UDM, UDR, PCF, NSSF
- SIM provisioning and IMSI management portal
- HLR/AuC for 2G/3G legacy network integration
- freeDiameter OCS integration for online billing
- MVNO-ready multi-tenant subscriber management
Number Resolution
ENUM / NAPTR Database
E.164 Number Mapping (ENUM) for real-time number lookups via DNS NAPTR records. Determine routing preferences, identify VoIP-capable numbers, and support Local Number Portability for least-cost routing decisions without expensive carrier dips.
- RFC 3761 ENUM over DNS — real-time NAPTR resolution
- Identify VoIP-capable numbers before routing
- LNP integration for ported number routing
- High-speed cached ENUM results (configurable TTL)
- Per-origination-point enable/disable control
- Cost reduction via on-net VoIP routing preference
US Compliance
10DLC A2P Registration
Managed 10-Digit Long Code (10DLC) campaign registration service for US A2P SMS. The platform integrates with The Campaign Registry (TCR) to automate brand registration, campaign submission, carrier vetting, and ongoing compliance monitoring.
- Brand registration via TCR API integration
- Campaign submission and carrier approval tracking
- Real-time campaign status in routing engine
- Block non-registered campaigns at send time
- Ongoing compliance monitoring and renewal alerts
- Per-number campaign association and reporting
Call Authentication
STIR/SHAKEN
Production-ready call authentication per RFC 8224 and RFC 8225. Sign outbound calls with passport tokens at attestation levels A, B, or C. Verify inbound call attestation to prevent caller ID spoofing and protect subscribers from robocall fraud.
- RFC 8224 / RFC 8225 — full passport token signing
- Attestation levels A (full), B (partial), C (gateway)
- Certificate management with SHAKEN PKI integration
- Per-call STIR verification result in CDR
- REST HTTPS API for certificate lifecycle management
- TRACED Act compliant; FCC mandated for carriers
Portability
MNP / LNP Lookups
Mobile Number Portability (MNP) and Local Number Portability (LNP) database queries for accurate routing and billing. Real-time prefix lookup identifies ported numbers, determines current operator, and allows tariff rates to be applied precisely.
- Real-time MNP dip per call and per SMS
- Identify ported numbers and current serving operator
- LRN (Local Routing Number) resolution for US LNP
- High-speed cache for repeat lookups — sub-millisecond hits
- Per-route enable/disable and fallback routing
- LNP result recorded in CDR for billing accuracy
Network Security
Multi-Layer Firewall
Four-layer protection stack combining iptables at the kernel level, firewalld zone management, ModSecurity web application firewall (WAF), and fail2ban intrusion prevention (IPS). GeoIP country-level blocking, protocol-specific rate limiting, and automatic threat response with real-time log streaming.
- iptables — kernel-level stateful packet inspection
- firewalld — zone-based policy management (public/internal)
- ModSecurity WAF — OWASP Core Rule Set 3.3
- fail2ban IPS — auto-ban on SIP scan and brute-force
- GeoIP blocks: SIP, SMPP, HTTPS per country
- DDoS mitigation: SYN, UDP, HTTP, port-scan, flood
DDoS Protection
DDoS Mitigation
Cisco-integrated DDoS mitigation platform with BGP blackhole routing, scrubbing centre integration, and volumetric attack absorption. Protects SIP, SMPP, and web infrastructure from layer 3/4 and application-layer attacks with automatic detection and diversion.
- BGP RTBH (Remote Triggered Black Hole) routing
- Scrubbing centre integration for volumetric attacks
- Layer 3/4 flood protection (SYN, ICMP, UDP)
- Application-layer HTTP/SIP flood detection
- Automatic detection, diversion, and clean-traffic return
- Real-time attack dashboard and incident reporting
Secure Connectivity
IPSec VPN
Site-to-site and client VPN tunnels using IPSec/IKEv2. Secure interconnection between data centres, carrier peering points, and enterprise customer premises equipment. Supports BGP over VPN for dynamic routing, enabling seamless failover and multi-homed connectivity.
- IKEv2/IPSec — AES-256 encryption, SHA-256 integrity
- Site-to-site tunnels between data centres and POPs
- Client VPN for remote operator access
- BGP over VPN for dynamic routing and failover
- Certificate-based authentication (PKI)
- Multi-homed endpoints for redundant connectivity