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T E C H N O L O G Y
ENUM Use and Management for the Successful
Deployment of ENUM-Enabled Services
Understand ENUM and its deployment to insure success of your VoIP
and other ENUM-enabled services
W H I T E
P A P E R
With today's increased focus on convergent technologies, such as IP
Multimedia Subsystem (IMS) networks, and the increased use of Voice
over IP (VoIP) and other IP-based services like Multimedia Messaging
Service (MMS), fast, easy and reliable administration of IP addresses
and Domain Name System (DNS) services is quickly becoming a critical
management issue.
Innovative ENUM management solutions such as Alcatel-Lucent's VitalQIP
ENUM Manager offer huge potential benefits to Service Providers
deploying ENUM-enabled services.
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Summary of Contents for Alcatel-Lucent ENUM
- Page 1 P A P E R ENUM Use and Management for the Successful Deployment of ENUM-Enabled Services Understand ENUM and its deployment to insure success of your VoIP and other ENUM-enabled services With today’s increased focus on convergent technologies, such as IP...
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Page 2: Table Of Contents
Possible ENUM DNS Architecture for VoIP Peering Partners Possible Future Capabilities with ENUM Comprehensive ENUM Management with Alcatel-Lucent’s VitalQIP ENUM Manager Comprehensive ENUM Management Leverage Alcatel-Lucent VitalQIP to Manage ENUM Conclusion Alcatel-Lucent | ENUM Use and Management for the Successful Deployment of ENUM-Enabled Services... -
Page 3: Introduction
ENUM domains, the ENUM Manager features the ability to split and merge them in order to manage the size of ENUM zone files used in DNS servers. The GUI also allows an administrator to create, update, delete, and search the NAPTR records. As a result of using VitalQIP ENUM Manager, Alcatel-Lucent’s DNS servers respond to queries for telephone number-to-URI translation for on-net calls and off-net calls to peering partners, and support other ENUM capabilities. -
Page 4: Overview Of Enum And Its Operation
Overview of ENUM and Its Operation As desribed in the Introduction, ENUM is defined in IETF RFC 3761. In this RFC, the phrase E.164 number frequently appears, and it refers to Recommendation E.164, which was written by the International Telecommunication Union (ITU) and specifies the international public telecommunication numbering plan. -
Page 5: Overview Of Enum In Ims
2. The Serving - Call Session Control Function (S-CSCF) communicates with the Application Server to provide subscriber services. 3. The S-CSCF queries the DNS/ENUM server with the E.164 number, and it returns the SIP URI of sip:ClientB@ims.acme.com. 4. The S-CSCF queries the DNS/ENUM server again to get the host IP address for ims.acme.com. This IP address is the address of the Interrogating-CSCF (I-CSCF). -
Page 6: Use Of Enum By Voip Peering Partners
Service providers may choose to partner together and interconnect their VoIP networks in order to bypass the PSTN. In this case, peering using ENUM and DNS can be done between partners, and DNS records that will be used by partners can be located in DNS servers in various locations. The main records of interest here are the NAPTR records that map E.164 numbers to SIP addresses of... -
Page 7: Possible Enum Dns Architecture For Voip Peering Partners
The ENUM administrative user interface depicted consists of ENUM manager’s browser-based GUI, and a service provider would use it when there is a need to manually operate on ENUM data. This administrative interface would also be available in the centralized VoIP service data center (SDC), and could be used, for example, to perform zone split and merge operations to manage the size of zones. -
Page 8: Possible Future Capabilities With Enum
An example future scenerio that would extend the use of ENUM even further could be using the E.164 number to place a call to an office based on time of day. In the event a connection could not be established, or during non-office hours, the call can be automatically sent to the users mobile number. -
Page 9: Comprehensive Enum Management With Alcatel-Lucent's Vitalqip Enum Manager
The ENUM management platform must contain the capability to split and merge ENUM domains to manage the size of ENUM zone files used in DNS servers. By the very nature of the ENUM domain structures, the ability to split the domains is supported, however not easily. The following NAPTR record, which initially exists in the my-enum.com zone, will be used to illustrate splitting ENUM domains. -
Page 10: Leverage Alcatel-Lucent Vitalqip To Manage Enum
ENUM database is an essential component of effective NAPTR record management. The VitalQIP ENUM Manager NAPTR record search screen is shown on the next page in Figure 6. Alcatel-Lucent | ENUM Use and Management for the Successful Deployment of ENUM-Enabled Services... - Page 11 To handle the growth of ENUM domains, the ENUM manager features the ability to split and merge ENUM domains to manage the size of ENUM zone files used in DNS servers. ENUM zones can be split at the country code, city code, area code, exchange level, and potentially between any digit in the E.164 number.
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Page 12: Conclusion
Dynamic DNS updates, helps you avoid network outages and automate address and name assignments. VitalQIP ENUM Manager offers comprehensive administration capabilities to effectively leverage the existing DNS infrastructure, permitting ENUM-enabled services to be deployed in the network. As your network continues to grow, more IP devices, more traffic, and newer technologies such as VoIP continuously increase your management responsibilities.
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