TANDBERG D13691.03 user manual URI Dialing, Creating DNS SRV records

Page 30

TANDBERG Border Controller User Manual

6URI Dialing

If an alias is not located in the Border Controller’s list of registrations, it may attempt to find an authoritative Gatekeeper through the DNS system.

URI dialing makes it easier for endpoints registered with different Gatekeepers or Border Con- trollers to call each other. Without URI dialing, you need to neighbor all the systems to each other. This does not scale well as the number of systems grows. It is also inconvenient for making one off calls to endpoints registered with previously unknown systems.

Using URI dialing, you call using an H.323 URI which looks like an email address. The destination Gatekeeper is found from the domain name — the part after the @ — in the same way that an email server is found.

The decision as to whether or not to use URI dialing is governed by the current state of:

xConfiguration Gatekeeper DNSResolution Mode: <On/Off>

or using the web interface on the Border Controller Configuration → Gatekeeper page

You will also need to configure a DNS server for the systems to query. This is set using:

xConfiguration IP DNS Server 1 Address: <address>

or using the web interface on the System Configuration → IP page (see Figure 14 for the IP Configuration screen).

If you want others to be able to reach you using URI dialing, add a record to your DNS information as described in Appendix: A

Endpoints will typically register with the Border Controller without their domain name. The Border Controller needs to match a request for fred@example.com to a registration for fred. To do this, it must be configured with the name of the domain in which its endpoints belong. This is set using

xConfiguration Gatekeeper LocalDomain DomainName: <name>

If URI dialing is being used in conjunction with firewall traversal, DNSResolution Mode should only be enabled on the Border Controller and on any Gatekeepers on the public network. The DNS records should be updated with the address of the Border Controller as the authoritative Gatekeeper for the enterprise. This ensures that calls placed using URI dialing enter and leave the enterprise through the Border Controller, allowing successful traversal of the firewall.

The LocalDomain DomainName should be set on both the Gatekeeper and the Border Controller. Any Alternates should also have the same LocalDomain Domain Name.

6.1Creating DNS SRV records

URI dialing relies on the presence of SRV Record in the DNS information for the zone. The SRV record specifies the location of a server for a particular protocol and domain. Its format is defined by an Internet standard [3] as

Service. Proto.Name TTL Class SRV Priority Weight Port Target

23

Page 29 Page 31
Image 30
Page 29 Page 31
Contents Tandberg Border Controller Trademarks and copyright DisclaimerEnvironmental Issues TANDBERG’s Environmental PolicyEnvironmental Considerations Operator Safety Summary Page Contents Software Upgrade Introduction Tandberg Border Controller Overview Installation PrecautionsUnpacking Installation site preparations Connecting CablesSwitching on the System MountingBorder Controller Initial Configuration Page System Administration Administrator AccountGetting started Registration Neighbor GatekeepersRoot Account Search Order Alternate Border Controllers Call Control Location decision flow diagram Firewall Traversal Bandwidth Control Page Bandwidth Control and Firewall Traversal Bandwidth Control Examples Network Deployment with firewalls Page Registration Control Registration Restriction PolicyAuthentication Authentication using a local databaseAuthentication using an Ldap server Securing the Ldap connection with TLS URI Dialing Creating DNS SRV recordsPage Example Traversal deployments Simple Enterprise deploymentEnterprise Gatekeepers Dialing Public IP addressesNeighbored enterprises URI dialing from within the enterprisePage Address-switch Call PolicyMaking Decisions Based on Addresses Subfield Proxy CPL Script ActionsLocation RejectCall screening Unsupported CPL ElementsCPL Examples Selective Call ScreeningCall Redirection Controlling what is logged LoggingEvent log format Event Levels Logged EventsDNS Event data 245,NTP,DNS,LDAPPage Remote Logging YYYY/MM/DD-HHMMSSSoftware Upgrade Upgrading Using HttpsUpgrading Using SCP Page Calls Command ReferenceStatus Ethernet11.1.5 IP ExternalmanagerFeedback LdapRegistrations 11.1.8 NTPPipes ResourceUsageSystemUnit Authentication11.2 Configuration ZonesGatekeeper Page HTTP/HTTPS 11.2.6 IPLdap 11.2.9 Log 11.2.10 NTPOption Key Session Snmp11.2.15 SSH Subzones Telnet TimeZoneTraversal Zones Command AllowListDelete BootAllowListAdd CheckBandwidthDenyListAdd DefaultLinksAddDefaultValuesSet DenyListDeleteFindRegistration FeedbackRegisterFeedbackDeregister LinkAddPipeAdd OptionKeyAddOptionKeyDelete PipeDeleteHistory Feedback Clear Other commandsAbout EventlogRelkey SyslogVerifying the SRV record Appendix Configuring DNS ServersMicrosoft DNS Server Bind 8As expected Prerequisites Appendix Configuring Ldap ServersMicrosoft Active Directory Adding H.350 objectsOpenLDAP Securing with TLSInstalling the H.350 schemas Add the H.350 objects EMC Emission Radiated Electromagnetic Interference Electrical SafetyApprovals EMC ImmunityTechnical Specifications Physical Dimensions Power supplyCertification References Glossary Index

D13691.03 specifications

The TANDBERG D13691.03 is a cutting-edge communication device that has been designed to meet the rigorous demands of modern business environments. Known for its reliability and versatility, the D13691.03 offers a comprehensive suite of features that enhance collaboration and productivity for organizations seeking seamless communication solutions.

One of the key characteristics of the TANDBERG D13691.03 is its exceptional video quality. Equipped with advanced video codecs, this device provides users with crystal clear HD video, ensuring that every interaction is as lifelike and engaging as possible. The intelligent bandwidth management technology optimizes the video quality based on the available network conditions, allowing for smooth and uninterrupted communication even in less than ideal network scenarios.

In addition to superior video capabilities, the D13691.03 boasts impressive audio technology. With integrated echo cancellation and noise reduction features, users can enjoy natural and clear audio during calls. This ensures that conversations are not only visually effective but also audibly intelligible, allowing for a more immersive communication experience.

Another notable feature of the TANDBERG D13691.03 is its user-friendly interface. Designed with usability in mind, the device comes with a touchscreen interface that simplifies navigation through the various settings and options. Users can easily connect with colleagues, schedule meetings, and access video conferencing features in just a few taps.

Moreover, the D13691.03 supports various connectivity options, including Ethernet and Wi-Fi, providing users with the flexibility to connect to their networks with ease. The device is also compatible with standard video conferencing protocols, making it an ideal solution for organizations that utilize multiple communication platforms.

The D13691.03 has been designed with security in mind, featuring advanced encryption protocols to protect sensitive data during video calls. This ensures that conversations remain confidential and secure, which is crucial for businesses handling proprietary information.

Overall, the TANDBERG D13691.03 stands out as a robust communication solution that enhances the way organizations interact. With its blend of high-quality video and audio capabilities, user-friendly design, and strong security measures, this device is well-equipped to handle the dynamic needs of modern workplaces, facilitating collaboration and driving productivity. Businesses looking to improve their communication infrastructure will find the TANDBERG D13691.03 to be an invaluable addition to their technology arsenal.
Top Page Image Contents