Bulgaria A2P SMS & Messaging Gateway | AVM Networks Limited

Q: What local telecom regulatory authority guidelines govern A2P SMS messaging in Bulgaria?

Enterprise A2P SMS delivery to Bulgaria (+359) is governed by Communications Regulation Commission (CRC) commercial communications directives. Senders must enforce explicit subscriber opt-in consent, support standardized opt-out mechanisms (such as STOP keywords), honor transactional messaging time windows, and comply with local data protection and anti-spam legislation across A1 Bulgaria, Yettel Bulgaria, Vivacom (United Group).

Q: What are the Sender ID verification prerequisites and registration rules for Bulgaria?

Alphanumeric Sender ID support (up to 11 characters) for Bulgaria requires pre-registration with local mobile network operators (A1 Bulgaria, Yettel Bulgaria, Vivacom (United Group)) depending on use-case classification and brand identity. Senders must supply corporate registration documentation and sample transactional message templates to prevent brand spoofing. Unregistered or promotional traffic routes via verified local long numbers or compliant fallback sender routes.

Q: What billing model and minimum volume commit thresholds apply to Bulgaria A2P SMS termination?

Messaging to Bulgaria is billed on a per-delivered-message basis with authentic handset delivery receipts (DLR) confirming delivery across domestic wireless operators (A1 Bulgaria, Yettel Bulgaria, Vivacom (United Group)). AVM Networks enforces zero mandatory monthly minimum commit thresholds for standard carrier accounts, with automated volume discounting available for high-throughput transactional OTP and enterprise alert streams.

Q: Which interconnection handover protocols are supported for Bulgaria A2P SMS delivery?

Interconnection into our SMS gateway is supported via high-throughput SMPP v3.4 multi-bind transceivers with optional TLS encryption, alongside HTTPS REST APIs accepting standard JSON payloads. Our gateway provides real-time HTTP webhook DLR callbacks, automated Mobile Number Portability (MNP) lookups, and scalable throughput capacity via configurable transceiver sessions.

AVM Networks Carrier Engineering Team

Bulgaria SMS Termination Providers & Wholesale A2P Gateway

Deploying enterprise A2P SMS delivery into Bulgaria (+359) requires an operator-compliant, secure gateway. AVM Networks Limited provides high-throughput Bulgaria wholesale SMS termination with verified handset delivery receipts (DLRs) across A1 Bulgaria, Yettel Bulgaria, Vivacom (United Group). Our gateway is optimized for sub-2.0s 2FA OTP tokens, FinTech security alerts, iGaming casino notifications, and e-commerce order tracking across all mobile network regions. Operating under BEREC and Communications Regulation Commission (CRC) data protection directives, senders utilize pre-registered Alphanumeric Sender IDs and Virtual Long Numbers (VLN) to bypass MNO firewall filters.

Executive Messaging Summary

AVM Networks Limited provides enterprise A2P SMS termination and direct operator binds to Bulgaria (+359). The platform supports high-throughput SMPP v3.4 binds (High-capacity throughput up to 500+ TPS per dedicated SMPP v3.4 session / multi-bind transceiver), delivery latency under Sub-5 second handset delivery SLA for verified transactional 2FA OTP tokens into Bulgaria (p95 < 3.2s), verified handset DLR receipts, and full compliance with regional regulatory guidelines across major MNOs (A1 Bulgaria, Yettel Bulgaria, Vivacom (United Group)).

Direct SMS Telecommunications Corridors for Bulgaria

Direct interconnects across wholesale messaging, SMPP binds, and engineering specifications for Bulgaria (+359):

Wholesale SMS

Wholesale SMS Termination →

Direct MNO Binds & High TPS

Carrier Spec

Bulk A2P SMS Termination →

Technical routing & SLA

Gateway Guide

Bulk SMS Platform →

Commercial enterprise gateway

A2P Messaging Throughput & Latency

Dial Code

+359

Throughput SLA

High-capacity throughput up to 500+ TPS per dedicated SMPP v3.4 session / multi-bind transceiver

Delivery Latency

Sub-5 second handset delivery SLA for verified transactional 2FA OTP tokens into Bulgaria (p95 < 3.2s)

DLR Reporting

Handset DLR

Supported Mobile Network Operators (MNOs) for Bulgaria

A1 Bulgaria Yettel Bulgaria Vivacom (United Group)

Wholesale Carrier Services

Wholesale SMS Termination & Direct MNO Gateway

High-throughput A-Z wholesale SMS termination with sub-2.0s OTP delivery and verified DLRs.

Enterprise A2P SMS Gateway & OTP Service

Carrier-grade REST APIs and priority OTP queuing with verified handset delivery receipts.

SMS SMPP Termination & SMPP v3.4 Binds

Multi-threaded transceiver binds supporting high-throughput capacity per session with low latency.

Carrier SMS REST API for Developers

Developer-friendly JSON API with HMAC security, delivery callbacks, and multi-language SDKs.

Messaging Standards & Protocols

A-Z SMS Termination Architecture

Unified global rate deck covering 110+ countries with Tier-1 1-hop interconnects.

SMPP v3.4 Protocol Specification

Short Message Peer-to-Peer transceivers, PDU sliding windows, and deliver_sm callbacks.

Best A2P SMS Provider Guide

Carrier evaluation criteria comparing delivery SLA, handset DLR, and throughput.

HLR Lookup & Mobile Number Portability

Real-time MSISDN network resolution, live IMSI lookup, and MNP status verification.

Delivery Receipt (DLR) Error Codes

Standardized handset delivery dispositions, latency timestamps, and carrier disposition codes.

DLT & 10DLC Brand Compliance

Distributed ledger registration, principal entity onboarding, and template approval mechanisms.

Official Industry References & Regulatory Standards

ITU-T Recommendation E.164 (International Public Telecommunication Numbering Plan)

International Telecommunication Union (ITU-T)

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GSMA PRD IR.21 & Wholesale Interconnection Standards

GSM Association (GSMA)

↗

3GPP Technical Realization of Short Message Service (TS 23.040)

3rd Generation Partnership Project (3GPP)

↗

Related Regional SMS Corridors

India (+91) → United Kingdom (+44) → United States (+1) → Singapore (+65) → Germany (+49) → France (+33) → Request Rate Deck for Bulgaria →