Carrier Standards, RFC Protocols & Regulatory Compliance

AVM Networks Limited complies with international telecommunication standards, IETF RFC protocols (RFC 3261, RFC 8224, RFC 3550), ITU-T recommendations, and national telecom regulatory frameworks across global interconnect zones.

Internet Engineering Task Force • standards

IETF RFC 3261 SIP Specification

The definitive core protocol specification for initiating, modifying, and terminating interactive voice and multimedia sessions across IP networks.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 8224 STIR/SHAKEN Protocol

Authenticated Identity Management in SIP, establishing cryptographic signature tokens (PASSporT) to verify Caller ID authenticity.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 8588 Personal Assertion Token (PASSporT)

Standardizes the PASSporT extension for STIR/SHAKEN authentication token format embedded in SIP Identity headers.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 5853 Session Border Controller (SBC)

Requirements for SBC Back-to-Back User Agent (B2BUA) architectures handling topology hiding, NAT traversal, and SIP normalization.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 4566 Session Description Protocol (SDP)

Format for describing multimedia communication sessions including audio codecs, RTP ports, and transport layer parameters.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 3550 Real-time Transport Protocol (RTP)

Protocol for real-time transmission of interactive audio and video data over IP networks with RTCP quality feedback.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 3711 Secure Real-time Transport Protocol (SRTP)

Cryptographic profile for RTP providing confidentiality, message authentication, and replay protection for voice media.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 4733 RTP Payload for DTMF Digits

Standards for out-of-band transmission of dual-tone multi-frequency (DTMF) signaling and telephony tones over IP.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 2782 DNS SRV Resource Records

Specifies DNS SRV records used for SIP server location, dynamic load balancing, and carrier failover routing.

Read Official Specification at Internet Engineering Task Force →
Internet Engineering Task Force • standards

IETF RFC 7230 HTTP/1.1 Message Syntax & Routing

Core protocol specification governing REST API endpoints and webhooks for CPaaS, SMS DLRs, and number lookups.

Read Official Specification at Internet Engineering Task Force →
International Telecommunication Union • standards

ITU-T Recommendation E.164

The international public telecommunication numbering plan establishing formatting, country codes, and E.164 dial strings.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation E.425

Standard defining Network Efficiency Ratio (NER) and call completion quality measurements on international telecommunication networks.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation E.600

Terms and definitions of traffic engineering and post-dial delay (PDD) parameters in telecommunications networks.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation P.800 (MOS Scale)

Standardized subjective and objective determination of transmission quality using Mean Opinion Score (MOS 1.0 to 5.0).

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation P.862 (PESQ Algorithm)

Perceptual Evaluation of Speech Quality (PESQ) objective method for end-to-end voice quality measurement over telephony.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • voice-codecs

ITU-T Recommendation G.711 (Pulse Code Modulation)

Uncompressed 64 kbps audio codec standard specifying G.711 mu-law (North America/Japan) and G.711 A-law (Europe/International).

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • voice-codecs

ITU-T Recommendation G.729 (CS-ACELP)

Low-bandwidth 8 kbps voice compression codec widely deployed across wholesale carrier interconnections.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation Q.850 (ISUP Cause Codes)

Use of cause and location in the digital subscriber signaling system (e.g. Cause 16 Normal Clearing, Cause 17 User Busy, Cause 34 Circuit Congestion).

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation Q.767 (ISUP Signaling)

Application of the ISDN user part of CCITT Signaling System No. 7 (SS7) for international telephone calls.

Read Official Specification at International Telecommunication Union →
International Telecommunication Union • standards

ITU-T Recommendation E.212 (MCC/MNC Plan)

The international identification plan for mobile networks providing Mobile Country Codes (MCC) and Mobile Network Codes (MNC).

Read Official Specification at International Telecommunication Union →
SMS Forum / SMPP Developers Group • sms-protocols

SMPP v3.4 Protocol Specification

The industry-standard client-server protocol used by SMSCs and ESMEs to exchange high-throughput Short Messages, PDUs, and DLRs.

Read Official Specification at SMS Forum / SMPP Developers Group →
GSMA • sms-protocols

GSMA Universal Profile for RCS (RCC.71)

Global standard specification defining Rich Communication Services (RCS) Business Messaging, verified senders, and conversational carousels.

Read Official Specification at GSMA →
GSMA Fraud and Security Group • standards

GSMA FS.30 Fraud & Security Guidelines

Best practice recommendations for telecom carriers on mitigating SMS phishing (Smishing), grey routing, and SS7 signaling vulnerabilities.

Read Official Specification at GSMA Fraud and Security Group →
3rd Generation Partnership Project • sms-protocols

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

The core telecommunications specification for SMS point-to-point architecture, mobile-originated (MO), and mobile-terminated (MT) signaling.

Read Official Specification at 3rd Generation Partnership Project →
3rd Generation Partnership Project • sms-protocols

3GPP TS 23.008 Organization of Subscriber Data (HLR/HSS)

Telecommunications standard detailing HLR subscriber management, IMSI translation, and Mobile Number Portability (MNP) routing registers.

Read Official Specification at 3rd Generation Partnership Project →
3rd Generation Partnership Project • sms-protocols

3GPP TS 29.002 Mobile Application Part (MAP) Signaling

Defines SS7 MAP operations such as sendRoutingInfoForSM (SRI-SM) and forwardSM used in Tier-1 carrier SMS delivery and HLR dips.

Read Official Specification at 3rd Generation Partnership Project →
European Telecommunications Standards Institute • sms-protocols

ETSI GSM 03.38 Character Encoding Specification

Defines the 7-bit default alphabet encoding for 160-character SMS messages and 16-bit UCS2 unicode formatting for multilingual text.

Read Official Specification at European Telecommunications Standards Institute →
Federal Communications Commission (US) • regulatory

FCC STIR/SHAKEN Mandate & Robocall Mitigation

US regulatory requirements mandating voice service providers to certify in the Robocall Mitigation Database (RMD) and implement caller ID signing.

Read Official Specification at Federal Communications Commission (US) →
The Campaign Registry (TCR) • regulatory

The Campaign Registry (US 10DLC Brand & Campaign Ecosystem)

Official central registry providing brand and campaign vetting for 10-digit long code (10DLC) A2P messaging on US tier-1 mobile operators.

Read Official Specification at The Campaign Registry (TCR) →
Telecom Regulatory Authority of India • regulatory

TRAI TCCCPR 2018 (India DLT Scrubbing Framework)

Regulatory mandate requiring blockchain Distributed Ledger Technology (DLT) registration for Principal Entities, SMS headers, and content templates.

Read Official Specification at Telecom Regulatory Authority of India →
Office of Communications (UK) • regulatory

Ofcom CLI Authentication & Numbering Rules

United Kingdom regulatory guidelines requiring telecom carriers to identify, verify, and block invalid or spoofed CLI presentations.

Read Official Specification at Office of Communications (UK) →
European Union BEREC • regulatory

Body of European Regulators for Electronic Communications (BEREC)

Coordinates electronic communications regulations across European member states, setting wholesale roaming and termination euro-rates.

Read Official Specification at European Union BEREC →
Infocomm Media Development Authority • regulatory

IMDA Singapore SMS Sender ID Registry (SSIR)

Mandatory registry requiring all enterprise organizations sending SMS to Singapore mobile subscribers to register alphanumeric Sender IDs.

Read Official Specification at Infocomm Media Development Authority →
Australian Communications and Media Authority • regulatory

ACMA Reducing Scams Code (Australia)

Telecommunications industry standard mandating carrier-level blocking of spoofed SMS sender IDs and unauthenticated international calls.

Read Official Specification at Australian Communications and Media Authority →
Telecommunications and Digital Government Regulatory Authority • regulatory

TDRA UAE Unsolicited Electronic Communication Policy

United Arab Emirates telecom directives governing commercial spam, Sender ID registration with e& and du, and do-not-call registries.

Read Official Specification at Telecommunications and Digital Government Regulatory Authority →
CST Saudi Arabia • regulatory

CST Communications, Space & Technology Commission (Saudi Arabia)

Regulatory guidelines enforcing local SMS licensing, alphanumeric sender verification, and direct operator termination in KSA.

Read Official Specification at CST Saudi Arabia →
Cellular Telecommunications Industry Association • regulatory

CTIA Messaging Principles and Best Practices

US wireless industry operational framework for consumer consent, opt-in/opt-out keywords (STOP, HELP), and SHAFT content restrictions.

Read Official Specification at Cellular Telecommunications Industry Association →
US Congress / FCC • regulatory

Telephone Consumer Protection Act (TCPA 47 U.S.C. § 227)

Federal statute restricting automated dialing systems, artificial voice messages, and unconsented commercial text messaging.

Read Official Specification at US Congress / FCC →
Equinix International • infrastructure

Equinix Fabric Global Interconnection

Global software-defined interconnection platform connecting AVM Networks Points of Presence to Tier-1 telcos worldwide.

Read Official Specification at Equinix International →
Equinix Inc. • exchanges

Equinix NY4 Secaucus New York Carrier Hotel

Premier financial and telecommunications colocation hub serving as AVM Networks North American voice peering node.

Read Official Specification at Equinix Inc. →
Equinix GmbH • exchanges

Equinix FR5 Frankfurt Carrier Hub

Central European interconnect facility housing bilateral SIP trunks and direct SS7 signaling links for DACH and EU routing.

Read Official Specification at Equinix GmbH →
Equinix Asia-Pacific • exchanges

Equinix SG1 Singapore Gateway

Asia-Pacific connectivity epicenter providing low-latency routing to Southeast Asian and Australian mobile operators.

Read Official Specification at Equinix Asia-Pacific →
Telehouse International • exchanges

Telehouse London Docklands (North Two)

Europe’s primary carrier interconnect nexus hosting LINX, LONAP, and hundreds of Tier-1 wholesale voice carriers.

Read Official Specification at Telehouse International →
DE-CIX Management GmbH • exchanges

DE-CIX Frankfurt Internet Exchange

World’s leading carrier exchange point enabling low-latency private interconnects and direct IP peering for voice and SMS transit.

Read Official Specification at DE-CIX Management GmbH →
LINX Ltd • exchanges

London Internet Exchange (LINX)

One of the largest member-led internet exchange points globally, providing high-bandwidth SIP and SMPP peering fabrics.

Read Official Specification at LINX Ltd →
AMS-IX B.V. • exchanges

Amsterdam Internet Exchange (AMS-IX)

International exchange hub facilitating low-latency transatlantic voice traffic handoffs and SMS routing.

Read Official Specification at AMS-IX B.V. →
Chinese University of Hong Kong / HKIX • exchanges

Hong Kong Internet Exchange (HKIX)

Major telecommunications exchange point in Greater China providing intra-Asia SIP routing and SMSC transit.

Read Official Specification at Chinese University of Hong Kong / HKIX →
Digital Realty • exchanges

Digital Realty Interxion Madrid (MAD1/MAD2)

Primary Mediterranean and LATAM gateway data center for international wholesale voice termination.

Read Official Specification at Digital Realty →
PeeringDB Global Database • infrastructure

PeeringDB Carrier Peering Registry (AS210257)

Public peering database record and interconnection profile for AVM Networks Limited Autonomous System AS210257.

Read Official Specification at PeeringDB Global Database →
Hurricane Electric Global IP Transit • infrastructure

Hurricane Electric BGP Routing Directory (AS210257)

Real-time Autonomous System routing telemetry, BGP peers, prefix announcements, and peering points for AS210257.

Read Official Specification at Hurricane Electric Global IP Transit →
Federal Communications Commission • regulatory

FCC Robocall Mitigation Database & STIR/SHAKEN Filings

Official US FCC registry verifying certified STIR/SHAKEN Level A cryptographic attestation and robocall mitigation compliance.

Read Official Specification at Federal Communications Commission →
Kamailio Core Project • open-source

Kamailio SIP Server Engine

High-performance, carrier-grade open-source SIP server capable of handling thousands of call setups per second in Class 4 topologies.

Read Official Specification at Kamailio Core Project →
OpenSIPS Project • open-source

OpenSIPS Routing Softswitch

Multi-functional SIP proxy and trunk routing engine powering wholesale LCR, load balancing, and high-availability carrier backbones.

Read Official Specification at OpenSIPS Project →
Sangoma Technologies • open-source

Asterisk PBX Telephony Engine

The world’s most widely deployed open-source communications engine powering cloud PBX, IVR, and conferencing solutions.

Read Official Specification at Sangoma Technologies →
SignalWire / FreeSWITCH Project • open-source

FreeSWITCH Multi-Protocol Softswitch

Scalable open-source cross-platform telecommunications software designed for media transcoding, WebRTC, and carrier SIP trunking.

Read Official Specification at SignalWire / FreeSWITCH Project →
Wireshark Foundation • open-source

Wireshark VoIP & SIP Protocol Analyzer

Industry-standard network packet inspection and SIP/RTP call-flow diagnostics tool used by NOC engineers globally.

Read Official Specification at Wireshark Foundation →
SIPp Community Project • open-source

SIPp Performance Benchmark Tool

Performance testing and traffic generation tool used to benchmark carrier SIP switch throughput in CAPS (Call Attempts Per Second).

Read Official Specification at SIPp Community Project →
GSMA • events

GSMA Mobile World Congress (MWC Barcelona)

The premier global telecommunications and connectivity summit where operators negotiate bilateral voice and SMS roaming agreements.

Read Official Specification at GSMA →
Delinian / ITW Global Leaders Forum • events

International Telecoms Week (ITW)

The world’s largest gathering of global telecommunications carrier executives, wholesale voice traders, and infrastructure providers.

Read Official Specification at Delinian / ITW Global Leaders Forum →
Capacity Media • events

Capacity Middle East (Dubai)

Leading telecom carrier event connecting Middle Eastern, European, Asian, and African voice, SMS, and data transit operators.

Read Official Specification at Capacity Media →
Capacity Media • events

Capacity Europe (London)

Europe’s largest carrier interconnect conference focused on digital infrastructure, subsea fiber, and wholesale voice bilateral trading.

Read Official Specification at Capacity Media →
Terrapinn • events

Total Telecom Congress (Amsterdam)

Strategic international conference shaping carrier business models, 5G standalone networks, and enterprise CPaaS delivery.

Read Official Specification at Terrapinn →
Wikipedia Telecommunications • encyclopedia

Voice over IP (VoIP) Telephony Architecture

Comprehensive overview of VoIP history, delivery technologies, signaling architectures, and transmission protocols.

Read Official Specification at Wikipedia Telecommunications →
Wikipedia Telecommunications • encyclopedia

Session Initiation Protocol (SIP)

Technical encyclopedia breakdown of SIP user agents, proxies, registrars, and signaling call flow states.

Read Official Specification at Wikipedia Telecommunications →
Wikipedia Telecommunications • encyclopedia

Short Message Peer-to-Peer (SMPP)

Architecture details of SMPP client-server bindings, windowing algorithms, and optional TLV parameters in A2P SMS.

Read Official Specification at Wikipedia Telecommunications →
Wikipedia Telecommunications • encyclopedia

Signaling System No. 7 (SS7 / C7)

Comprehensive guide to SS7 protocol stack (MTP1-3, SCCP, TCAP, ISUP, MAP) used in worldwide public switched telephone networks.

Read Official Specification at Wikipedia Telecommunications →
Wikipedia Telecommunications • encyclopedia

STIR/SHAKEN Caller ID Framework

Details on cryptographic attestation levels (A, B, C), certificate authorities, and SIP identity header verification.

Read Official Specification at Wikipedia Telecommunications →
GSM Association • standards

GSMA Fraud and Security Group (FASG)

International standards for telecommunications fraud mitigation, Artificially Inflated Traffic (AIT) blocking, and SMS firewall intelligence.

Read Official Specification at GSM Association →
CFCA Global • regulatory

Communications Fraud Control Association (CFCA)

Industry-wide telecom toll fraud surveys and loss mitigation architectures for international wholesale carrier interconnects.

Read Official Specification at CFCA Global →
U.S. Department of Health and Human Services • regulatory

HHS HIPAA Security & Privacy Rule

Federal regulations governing the transmission of electronic Protected Health Information (ePHI) across cellular networks and SMS gateways.

Read Official Specification at U.S. Department of Health and Human Services →
PCI SSC • standards

PCI Security Standards Council (PCI-DSS v4.0)

Technical mandates for securing cardholder data environments, transaction alerts, and multi-factor authentication (MFA) OTP codes.

Read Official Specification at PCI SSC →
International Air Transport Association • standards

IATA Fast Travel & Passenger Digital Communications

Global standards for mobile boarding pass barcodes, flight disruption messaging, and automated airline customer notification frameworks.

Read Official Specification at International Air Transport Association →
Universal Postal Union • standards

UPU Postal Technology Centre Telematics

International electronic data interchange (EDI) and SMS delivery notification standards for cross-border parcel and courier operations.

Read Official Specification at Universal Postal Union →

Need Detailed Technical Standards or Interconnect Documents?

Contact our NOC Engineering Desk for bilateral SIP peering specifications and compliance documentation.

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