ENUM
ENUM is a protocol that provides a translation mechanism for E.164 telephone numbers into IP addressing schemes. Based on standards endorsed by IETF (Internet Engineering Task Force) and ITU (International Telecommunication Union), ENUM is the key ingredient of the convergence between PSTN and Internet.
Maturity
We have invested into Infrastructure ENUM since 2003. Our track record is available at:
http://ag-projects.com/docs/ENUM
AG Projects infrastructure ENUM solution participated to the ENUM plug-test organized by ETSI and is compliant with all ETSI recommendations for ENUM interoperability. For more information about ENUM interoperability plug-test visit:
System design
AG Projects infrastructure ENUM system is a high-available and scalable platform consisting of the following components:
DNS server
SOAP/XML provisioning
Database backend
Provisioning client
The system can be deployed in a fully resilient configuration that allows for continuous system operation in case of a single component failure. The system has remote capability for monitoring, data provisioning and to obtain usage information.
The system complies with the following specifications and recommendations:
- RFC 3401
-
Dynamic Delegation Discovery System (DDDS) Part One: The Comprehensive DDDS
- RFC 3402
-
Dynamic Delegation Discovery System (DDDS) Part Two: The Algorithm
- RFC 3403
-
Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS Database)
- RFC 3404
-
DNS Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers
- ETSI TR 102 055 V1.1.1
-
Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); ENUM scenarios for user and infrastructure ENUM)
- ETSI TS 102 172 V1.2.1
-
Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Minimum requirements for interoperability of ENUM implementations
Supported NAPTR service types
The following service types for NAPTR records are supported:
| Service | URI schemes | Normative references |
|---|---|---|
| E2U+sip |
sip:,sips: | RFC 3764 |
| E2U+h323 |
h323: | RFC 3762 |
| E2U+voice:tel |
tel: | RFC 4415 |
| E2U+email:mailto | mailto: |
RFC 4355 |
| E2U+fax:tel |
tel: |
RFC 4355 |
| E2U+mms:tel |
tel: |
RFC 4355 |
| E2U+sms:tel |
tel: |
RFC 4355 |
| E2U+ems:tel |
tel: | RFC 4355 |
| E2U+mms:mailto | mailto: | RFC 4355 |
| E2U+sms:mailto |
mailto: | RFC 4355 |
| E2U+ems:mailto | mailto: |
RFC 4355 |
| E2U+web:http |
http: |
RFC 4002 |
| E2U+web:https |
https: |
RFC 4002 |
| E2U+ft:ftp |
ftp: | RFC 4002 |
| E2U+pres |
pres:,sip: |
RFC 3953 |
| E2U+ifax:mailto |
mailto: |
RFC 4143 |
| E2U+pstn:tel |
tel: |
RFC 4769 |
| E2U+pstn:sip |
sip: | RFC 4769 |
| E2U+void:mailto |
mailto: | ETSI TS 102 172 |
| E2U+void:http |
http: | ETSI TS 102 172 |
| E2U+void:https |
https: | ETSI TS 102 172 |
| E2U+iax |
iax: | ID |
| E2U+iax2 |
iax2: | ID |
| E2U+im |
im: | ID |
| E2U+loc:http |
http: | ETSI TS 102 172 |
| E2U+loc:https | https: | ETSI TS 102 172 |
| E2U+x-skype:callto |
callto: |
N/A |
| E2U+key:http | http: | ETSI TS 102 172 |
| E2U+key:https | https: |
ETSI TS 102 172 |
For more information about ENUM services go to:
http://www.iana.org/assignments/enum-services
AG Projects' infrastucture ENUM solution is used in production since 2003 and is delivered standard with Multimedia Service Platform.