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:

http://www.etsi.org/plugtests/History/2005ENUM.htm

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.