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Cisco VG30D Voice Gateway User Guide April 28, 2009 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 Text Part Number: OL-19276-01...
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PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
POST Impedance Switches Craft Switch Power On Self Test and IP Address Setup Successful Self-Test Self-Test Failure Initial Configuration C H A P T E R Gateway Management Interface Access Levels Help Facility Cisco VG30D Voice Gateway User Guide OL-19276-01...
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9-16 Centralised Operator 9-17 Add-On Conference 9-20 Do Not Disturb 9-20 Loop Avoidance 9-20 Network Address Extension 9-21 Fault Determination 10-1 C H A P T E R Introduction 10-1 Power-On Problems 10-1 Cisco VG30D Voice Gateway User Guide OL-19276-01...
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Lithium Cell Flammability CE Mark EMC Declaration of Conformity Safety Declaration of Conformity Special National Conditions Norway Spain Sweden Switzerland Denmark References and Technical Specifications A P P E N D I X References Cisco VG30D Voice Gateway User Guide OL-19276-01...
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A P P E N D I X Craft Port Functionality & Operation Access Useful Information A P P E N D I X Using with GPT / Siemens Equipment Maintenance Replacement L O S S A R Y Cisco VG30D Voice Gateway User Guide OL-19276-01...
Glossary • The Cisco VG30D Voice Gateway The Cisco VG30D Voice Gateway is a dual-port ISDN unit that is designed to perform signalling and service reconciliation between two unlike ISDN signalling systems. It typically gets deployed to attach the following:...
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A DPNSS PBX to a Q.931-based Public ISDN service (such as ISDN 30e). When you are attaching a QSIG (or DPNSS) PBX to a DPNSS (or QSIG) network, Cisco VG30D Voice Gateway provides seamless service interworking between the attached PBX and other PBXs in the network, including inter-operation of most of the commonly used services.
Management On powering on the Cisco VG30D Voice Gateway, Power On Self Test gets performed. You can monitor the process using the Craft port and the serial cable that is supplied with the Cisco VG30D Voice Gateway. See Power On Self Test and IP Address Setup.
C H A P T E R Installation Before you can use your Cisco VG30D Voice Gateway, you will need to follow all the steps in this section. This will provide you with basic functionality. Initial Configuration Management and Configuration describe configuration of the more advanced features of the Cisco VG30D Voice Gateway.
Store the packaging material in a clean, dry area for possible re-use. Hardware Installation The Cisco VG30D Voice Gateway may be either rack mounted (preferred) or used as a desktop unit. When you are rack mounting, pay attention to cooling. The Cisco VG30D Voice Gateway has side-to-side cooling.
Connect the mains power cable. Step 3 Connect the 10/100 Ethernet cable. Front Panel Indicators The Cisco VG30D Voice Gateway unit has 10 LEDs on its front panel. They show unit status information. This section describes the front panel indicators that Figure 3 shows.
Use the 10/100 Base-T Port to connect to the IP Network to allow voice packets to be transmitted and received and for a computer using a Web browser to communicate with the Cisco VG30D Voice Gateway configuration and management interface.
Before connecting any cables or changing any switches, power off the Cisco VG30D Voice Gateway. Caution POST You must set the Power On Self Test (POST) switch in the POST position before powering on the Cisco VG30D Voice Gateway unit. Only Cisco Systems, Inc., engineers use the Factory position. Impedance Switches This allows the selection of either 75-ohm or 120-ohm impedance for the SCN ports.
Power On Self Test and IP Address Setup On power ON of the Cisco VG30D Voice Gateway, the unit will perform a self-test. The Power LED on the front panel shows amber, and the four STATUS LEDs come on and go off (in sequence from left to right) to indicate that the unit is performing the self-test.
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Fault Determination for the appropriate corrective action or call your support contact. After errors have been corrected, make sure that the self-test runs satisfactorily to completion and proceed as described in Successful Self-Test Cisco VG30D Voice Gateway User Guide OL-19276-01...
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Chapter 2 Installation Power On Self Test and IP Address Setup Cisco VG30D Voice Gateway User Guide OL-19276-01...
Initial Configuration Gateway Management Interface To configure the Cisco VG30D Voice Gateway, you must now connect the Ethernet Port to the IP Network, but do NOT connect to the E1 telephony ports yet. You need a standard Web browser application to configure the Cisco VG30D Voice Gateway unit. Ensure that your browser is set to accept cookies and always check for newer versions of stored pages.
Refresh Use this button to refresh the page to see the original settings or to confirm the submitted settings or changes. Close This button takes you back to the Menu or previous pages. Access Levels The Cisco VG30D Voice Gateway has 3 access levels: Monitor • Configure •...
User Guide and does not provide guidance on communications protocols. Logout The Logout facility is provided because only a single user may access the Cisco VG30D Voice Gateway management interface at any one time. When a user is logged in, no other logins will be accepted.
Enter the Management IP address of the Cisco VG30D Voice Gateway (default is 192.168.1.1) in the Address field of your browser. When the Cisco VG30D Voice Gateway unit is located, you will be asked to enter a User Name and a Password.
Select Go Back to return to Access Control Settings or select Close to exit Access Control. Step 3 Logging Out Select Logout from the main Menu. Step 1 Confirm that you want to log out. Step 2 Close the browser window. Step 3 Cisco VG30D Voice Gateway User Guide OL-19276-01...
IP Addresses and Time and Date settings will not get changed: Should you want to reset the Cisco VG30D Voice Gateway to its default settings, perform the following procedure: Select Configuration, Gateway and then Reset to Defaults.
IP address at the bottom of the Gateway Management Interface configuration pages. IP Address changes will not be effected until the Cisco VG30D Voice Gateway has been reset. You will need to log in to the new address for any further configuration changes. Name changes take effect immediately.
Inter-working • Access Control No change will occur to the Cisco VG30D Voice Gateway’s date and time settings, IP address, software selection, logs, or statistics. Reboot the Cisco VG30D Voice Gateway for changes to take effect. Back Up Configuration You cannot restore backups from a Westell IiQ3000 Voice Gateway to the Cisco VG30D Voice Gateway.
Step 8 Restore Configuration This allows a configuration that previously has been backed up to either be restored to the Cisco VG30D Voice Gateway from which it was backed up or to be installed on another Cisco VG30D Voice Gateway unit.
You cannot activate the port if no channels are commissioned. Note Channel Commissioning (for up to 30 channels) • All channels are set to In Use when the Cisco VG30D Voice Gateway is supplied. Channels that are not required may be decommissioned DPNSS A/B Orientation •...
SABMEs on each commissioned channel. Select or deselect Clear on Establish • If checked, the Cisco VG30D Voice Gateway will send a CRM on each LAP as it is established. Channel Allocation - Low to High / High to Low •...
• incoming call must get used for the outgoing call. If setting is configured to Switched, a different channel may get negotiated in the outgoing Q.931 call, and the Cisco VG30D Voice Gateway will switch the bearer channel internally. Transparent Transport Service Support: This setting enables the generation of information that •...
Include Loop Avoidance in CRM: If the treatment of the LA results in the call clearing and this is • checked, the LA string will get included in the Clear Request Message that is generated by the Cisco VG30D Voice Gateway.
Immediate if the Cisco VG30D Voice Gateway is to initiate the link, or select Call if the Cisco VG30D Voice Gateway has only to establish the link if it has a call to deliver and the link layer has not yet been established.
Incoming Channel Mapping: If this setting is configured to Fixed, the channel that is used by the incoming call must be used for the outgoing call. If this setting is configured to Switched, a different channel may be used in the outgoing Q.931 call, and the Cisco VG30D Voice Gateway will switch the bearer channel internally.
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• Invoke Identifier Length: This option sets the length of ROSE Components Invoke Identifiers to be generated and received by the Cisco VG30D Voice Gateway. It may be set to 1 or 2. • Default Outgoing Calling Number Plan: This option gets used to force a particular number type and plan in Called and Calling Party Number Information Elements.
Message Waiting NSI option: The Non Standard Information (NSI) that is used by various PBXs • may be generated by the Cisco VG30D Voice Gateway. The strings that are used by ISDX and MD110 PBXs are provided, or the user may specify any other string by selecting Raw. Refer to DPNSS Message Waiting Implementations for further information.
This new application will overwrite an existing previously downloaded application but not the default application. The new application will run next time the Cisco VG30D Voice Gateway is reset, but only if the new software has been selected by using the Software Selection facility. Instructions on installing the software version will be provided with the new software.
Select the version of the software to run next time the unit is restarted. Step 3 Restart the Cisco VG30D Voice Gateway unit. The configuration that is stored on the unit automatically gets loaded into the new version of software.
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Chapter 4 Management and Configuration Administration Cisco VG30D Voice Gateway User Guide 4-14 OL-19276-01...
Copy and Paste facilities in the Web browser, you can export the information in ASCII text to other applications. Note If the system is set to Factory Defaults and the Cisco VG30D Voice Gateway is rebooted, all the logs will get cleared, and the information other than the System Log will get lost. General System Details System Details provide hardware and software information for the Cisco VG30D Voice Gateway unit.
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Informational The IP address of An entry gets None. in to Web everyone who written to the log management logged into the and an SNMP trap gateway’s gets generated. management system is recorded. Cisco VG30D Voice Gateway User Guide OL-19276-01...
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Informational The gateway date An entry gets None. set from craft menu and time got written to the log. changed by use of the Craft menu. Error Code LogDescription Seriousness Meaning AutomaticAction UserAction Cisco VG30D Voice Gateway User Guide OL-19276-01...
You can clear statistics by using the button that is provided. You cannot recover data that is cleared. You may want to print or export this information as ASCII text as described at the start of this section. Cisco VG30D Voice Gateway User Guide OL-19276-01...
Action on Link Layer RESET As the default, the Cisco VG30D Voice Gateway takes action to validate Q.931 call status for all fully active calls on notification of a Link Layer RESET. Calls only get cleared if they are not fully set up or a discrepancy exists in call state.
This enables non-DDI calls to get directed to a sensible destination such as the common operator. Normally, this would occur in the Q.931 PBX. However, in Cisco VG30D Voice Gateway AT&T and QSIG implementations, it can get configured to be supplied by the Converter.
Y end, gives precedence to incoming calls, so most channel contention problems get resolved in the DPNSS network. Similarly, it is advantageous though not mandatory, if Cisco VG30D Voice Gateway can be configured as the “Network” end of the Q.931 link. This is because this gives it precedence for calls over the attached “User”...
Never use this feature in conjunction with Cisco Unified Communications Manager. QSIG Transparency Through a DPNSS Network To configure the Cisco VG30D Voice Gateway to enable QSIG Transparency through a DPNSS network, in the Gateway Management Interface, perform the following procedure: Step 1 Go to Configuration / DPNSS Services.
Various manufacturers define proprietary signalling for turning ON and OFF Message Waiting indicators, or use the DPNSS Call Back Messaging service for this purpose. To configure the Cisco VG30D Voice Gateway to interwork QSIG Message Waiting with some common PBXs, go to Configuration / Inter-Working.
Siemens implemented proprietary extensions to DPNSS Diversion to achieve better integration with their voice messaging servers (VMSs). You can configure the Cisco VG30D Voice Gateway to attempt to interwork these extensions with the QSIG Call Forwarding service. However, in some cases, interworking is partial.
• Use of DPNSS Route Optimisation Invite String If you selected full interworking. Cisco VG30D Voice Gateway can occasionally persuade the network to achieve more effective call routing by issuing a “ROP-INV” request to the DPNSS PBX. ROP-INV was a late addition to the DPNSS specification, so not all DPNSS PBXs support this request. It can prevent some of those PBXs from achieving correct Route Optimisation.
Some QSIG PBXs overcome this restriction, without requiring action from the originating DPNSS PBX, by making the diverting leg of the call and joining the new and original call legs. Cisco VG30D Voice Gateway can now get set up to detect the condition (overlong divert-to-number) and change its signalling to trigger the QSIG PBX to take alternative diversion action.
For most applications the Cisco VG30D Voice Gateway Application windows give adequate control over the services to be proxied by the Cisco VG30D Voice Gateway on behalf of Q.931 equipment, but some more detailed tuning is possible using the Configuration / DPNSS Advanced window.
Proxy Diversion Service is enabled and the Operator Recall Timeout is not set to zero. Service Spoofing Further service spoofing may get enabled or disabled within the Cisco VG30D Voice Gateway. Service spoofing covers the following areas: Automatic acknowledgement of DPNSS Diversion Validation requests •...
C H A P T E R SNMP Traps The Cisco VG30D Voice Gateway is configured to generate SNMP Traps for up to 8 destinations. SNMP traps have been divided into five groups as follows: • Major Alarm Port Errors •...
New software has been installed New software has been activated by the webserver New software has been activated by the Craft port Webserver login detected Webserver logout detected Webserver login fail System fully operational Cisco VG30D Voice Gateway User Guide OL-19276-01...
Layer 1 receiving AIS Layer 1 lost sync Layer 1 transmitting AIS Layer 1 receiving RAI Layer 1 has excessive errors Layer 1 receiving RAI and E bits Layer 1 transmitting no signal Cisco VG30D Voice Gateway User Guide OL-19276-01...
The following tables give an indication of the level of compliance with the DPNSS supplementary services as defined in BTNR 188 that can be achieved by a QSIG PBX interworking with DPNSS by using the Cisco VG30D Voice Gateway. Be aware that tables are derived from the Compliance section of BTNR188 for each service.
Chapter 9 DPNSS Compliance Tables Basic Call DPNSS features supported by the Cisco VG30D Voice Gateway with Cisco Unified Communications Manager (CUCM) Versions 4.1 and later. Comments (specific to CUCM DPNSS 188 Section Feature Description interworking) Transit PBX Partial support. Features...
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“Blind” Transfer. Redirection Partial support. Return to operator gets supported for calls that originate in DPNSS that are camped on to ringing extensions. Series call Partial support. Series call from DPNSS operator only Cisco VG30D Voice Gateway User Guide OL-19276-01...
NSIMs get filtered out Note when calls are transited through Cisco Unified Communications Manager. Data Call Compliance table for a PBX that supports the circuit switched data call Service Variant Comply Comment Originate Circuit Switched-Data Calls? Cisco VG30D Voice Gateway User Guide OL-19276-01...
Switched-Data Calls between through any 3.1K Audio circuit. Analogue and Digital traffic channels? Executive Intrusion (Partial Support) Compliance table for a PBX with operators or extensions in a network that supports executive intrusion Cisco VG30D Voice Gateway User Guide OL-19276-01...
Request executive intrusion with prior validation? Request withdrawal from intrusion? Diversion Diversion - Immediate Compliance table for a PBX with operators or extensions in a network that supports diversion immediate service Cisco VG30D Voice Gateway User Guide OL-19276-01...
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DPNSS 1 PBXs? Bypass Diversion on own PBX extensions when requested by other DPNSS 1 PBXs? Inform another DNSS 1 PBX that an incoming call has been Diverted Immediate to an extension within the PBX? Cisco VG30D Voice Gateway User Guide OL-19276-01...
DPNSS 1 PBX? Able to make a diverted call to a PBX extension on receipt of a Divert On-Busy instruction from a called extension on another DPNSS 1 PBX? Cisco VG30D Voice Gateway User Guide OL-19276-01...
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On-Busy Cancellation from other DPNSS 1 PBXs? Able to make a Diversion Validation Request to other DPNSS 1 PBXs? Compliance table for a transit PBX in a network that supports the diversion on-busy Cisco VG30D Voice Gateway User Guide OL-19276-01...
Able to request, from the nominated extension, cancellation of the Diversion-On-No-Reply Instruction on another DPNSS 1 PBX? Additional compliance table for a PBX with extensions that are capable of having their calls diverted-on-no-reply Cisco VG30D Voice Gateway User Guide 9-10 OL-19276-01...
Able to act as a Transit PBX for Diverted-On-No-Reply Calls received on a separate channel to the original call? Hold Compliance table for a PBX with operators or extensions in a network that supports hold Cisco VG30D Voice Gateway User Guide 9-11 OL-19276-01...
DPNSS 1 PBXs through separate channel? Accept being added into and split from a Three-Part Conference through a separate channel? Compliance table for a PBX with operators or extensions that can request three-party service Cisco VG30D Voice Gateway User Guide 9-12 OL-19276-01...
Accept a request to convert to executive intrusion on an offered call Compliance table for a PBX with operators or extensions in a network that can request call offer Cisco VG30D Voice Gateway User Guide 9-13 OL-19276-01...
Bearer Service Selection Capabilities set in administration (BSS-P) to request specific transmission path capabilities on outgoing calls? Compliance table for a transit PBX that supports bearer service selection Cisco VG30D Voice Gateway User Guide 9-14 OL-19276-01...
Compliance table for a transit PBX in a network that supports route optimisation Service Variant Comply Comment Transit Route Optimisation Requests? Prevent Alternative Routing during Route Optimisation Call Set-Up received on a separate channel? Cisco VG30D Voice Gateway User Guide 9-15 OL-19276-01...
Compliance table for a transit PBX in a network that supports the redirection service Service Variant Comply Comment Able to act as a transit for redirected calls received on a new channel? Cisco VG30D Voice Gateway User Guide 9-16 OL-19276-01...
Support Night Service in accordance with Table 2 of the Compliance for SECTION 25 of BTNR 188? Support Extension status service in accordance with Table 2 of the Compliance for SECTION 20 of BTNR 188? Cisco VG30D Voice Gateway User Guide 9-17 OL-19276-01...
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Support Night Service in accordance with Table 3 of the Compliance for SECTION 25 of BTNR 188? Support Extension status service in accordance with Table 3 of the Compliance for SECTION 20 of BTNR 188? Cisco VG30D Voice Gateway User Guide 9-18 OL-19276-01...
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Support Extension status service in accordance with Table 4 of the Compliance for SECTION 20 of BTNR 188? Support Controlled diversion in accordance with Table 4 of the Compliance for SECTION 21 of BTNR 188? Cisco VG30D Voice Gateway User Guide 9-19 OL-19276-01...
ISRM or RM? configurable. Able to add an alternative-routing count to an inserted loop avoidance string? Able to take special action on receipt of a loop avoidance string in a CRM? Cisco VG30D Voice Gateway User Guide 9-20 OL-19276-01...
Compliance table for a PBX that has destinations to which subaddresses can be passed Service Variant Comply Comment Pass either decimal or binary binary supported form of subaddress to appropriate destinations? Upper limit imposed on length = 32 subaddress lengths? Cisco VG30D Voice Gateway User Guide 9-21 OL-19276-01...
Power-On Problems When a Cisco VG30D Voice Gateway is powered on, it performs a series of self-tests to ensure that the hardware is functioning correctly. Normal operation of the module resumes only if all tests are successful.
Cisco VG30D Voice Gateway alarm relay indications, assuming that the IP network and its diagnostic information are outside the control of the local management system.
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Error status on the LED display If a fault is indicated in the Cisco VG30D Voice Gateway or the network beyond, you can interrogate for the status of each port if management terminal access is available. Otherwise, examine the status indications on the Cisco VG30D Voice Gateway front panel.
Each procedure starts with a description of the symptoms of the error class, followed by diagnostic actions that allow the actual fault to be pinpointed more accurately. After this has been achieved, it should be possible for the user to attempt to correct the fault. Cisco VG30D Voice Gateway User Guide 10-4 OL-19276-01...
Power OFF and connect a dumb terminal (or computer with a terminal emulation program) to the Craft Port and set the Craft Switch to CRAFT Mode. Power ON to reset the unit. The Cisco VG30D Voice Gateway will Self Test again, and the terminal will display any failures. If no Self Test failures exist, but the Power LED remains amber, check that the POST switch has not been left in the Factory setting.
Power OFF and connect a dumb terminal (or computer with a terminal emulation program) to the Craft Port and set the Craft Switch to CRAFT Mode. Power ON to reset the unit. The Cisco VG30D Voice Gateway will start Self-Test again and request the IP addresses and sub-net masks if they have not already been set.
Check that the cables are 75 ohm and not 50 ohm. The centre pin diameter differs. • Perform local checks and ensure fault symptoms do not vary between them. If they do, a cable fault • is indicated. Cisco VG30D Voice Gateway User Guide 10-7 OL-19276-01...
If the attached equipment is indicating a problem, you may be able to diagnose the fault by referring to that equipment’s troubleshooting documentation. Log in to the Cisco VG30D Voice Gateway by using a web browser. Check that the Diagnostic Overview window shows no problems.
These will contain basic information, but on receipt of the trap, the user is intended to connect to the Cisco VG30D Voice Gateway unit by using the Gateway management Interface for a more detailed summary. The following events will result in a trap being sent:...
Unable to connect a Web browser to the Gateway Management Interface. Potential Cause and Action A user is already logged in to the Cisco VG30D Voice Gateway, or the last user failed to log out. Retry connecting after waiting for the Non-Use Timeout period to expire.
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Window selected from menu will appear (probably with no content) and then disappear. Potential Cause and Action The browser has been set to disable pop-ups. The Cisco VG30D Voice Gateway requires that pop-ups be enabled in the browser for the management program to function correctly.
This information must be read prior to use of this equipment and overrides as appropriate any information in respect of connection and use of the equipment. Address any enquiries regarding regulatory aspects of this equipment to Cisco Systems, Inc. Connection to Mains Voltage Supply The wires in the mains lead are coloured in accordance with the following code.
This requires a PVC covered earth cable (longitudinal Green and Yellow coloured stripes in accordance with EN 60950 / IEC60950) and must be connected to the chassis earth stud on the back of the unit. Cisco VG30D Voice Gateway User Guide OL-19276-01...
Current rating 17 Amps, with a cross sectional area of 1.5 mm , Wire 7/0.53 mm • • Terminated at the Cisco VG30D Voice Gateway with an M3 ring terminal 1-2.6 mm conductor Note When the 75-ohm BNC connectors are in use, permanent earthing replaces the requirements of clause 6.1.2 of EN 60950 as both the TNV and the metal case have an earth connection.
Special National Conditions Norway The local distributor of the Cisco VG30D Voice Gateway in Norway must attach a self adhesive label placed just above the fuse rating, which is situated above the mains inlet filter. This label displays the following text in Norwegian:...
Approvals, Safety Instructions, and Statutory Information Special National Conditions Denmark The local distributor of the Cisco VG30D Voice Gateway in Denmark must ensure that the power supply cord is provided with a moulded plug. Cisco VG30D Voice Gateway User Guide...
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Appendix A Approvals, Safety Instructions, and Statutory Information Special National Conditions Cisco VG30D Voice Gateway User Guide OL-19276-01...
2.6 kg. 4 kg fully packaged. Cooling Side-to-side forced air Mounting 19-inch rack mounting Reliability MTBF > 30,000 hours MTTR 30 minutes. No field repair option exists. The unit gets replaced and returned for factory repair. Cisco VG30D Voice Gateway User Guide OL-19276-01...
DPNSS: BTNR 188 issue 7 Signalling Orientation All protocols fully ET/PBX configurable Clocking Clock Source The unit can be synchronised to either primary port. Internal Clock Stability E1 - 2.048Mbit/s ± 100 ppm Cisco VG30D Voice Gateway User Guide OL-19276-01...
Appendix B References and Technical Specifications Technical Specifications Management Interface Web Browser Microsoft Internet Explorer 5.0 or later • Netscape 6.0 or later • Firefox 1.5 or later • Cisco VG30D Voice Gateway User Guide OL-19276-01...
Maximum voltage/current 60V at 500mA over the operating ambient temperature range Craft Port - Craft Mode V.24/V.28 (RS232) Connector 9 pin, female sub-miniature D connector Pin 2 TxD Pin 3 RxD Pin 5 GND Cisco VG30D Voice Gateway User Guide OL-19276-01...
Craft Port Management Craft Port Functionality & Operation The Craft Port provides a secondary means of managing the Cisco VG30D Voice Gateway. Use it for presentation of self-test results and for basic IP address parameter setup. It also provides a means by which low-level functions and diagnostics may be accessed during normal operation.
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Appendix D Craft Port Management Craft Port Functionality & Operation Cisco VG30D Voice Gateway User Guide OL-19276-01...
Maintenance Replacement In the unlikely event that an Cisco VG30D Voice Gateway should fail, you may need to replace it with a maintenance spare that will need to be configured to the same settings as the field Cisco VG30D Voice Gateway.
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Appendix E Useful Information Maintenance Replacement Cisco VG30D Voice Gateway User Guide OL-19276-01...
Digital Access Signalling System Number 2. The current version of the DASS protocol. Often just DASS2 referred to as DASS. Differentiated Services. DiffServ Digital Private Network Signalling System. DPNSS Dual tone multifrequency. DTMF Encryption Control Protocol. Cisco VG30D Voice Gateway User Guide GL-1 OL-19276-01...
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Extension of ITU-T standard H.320 that enables videoconferencing over LANs and other H.323 packet-switched networks, as well as video over the Internet. An ITU standard that defines supplementary services. H.450 Hertz. Internet Protocol. Integrated Services Digital Network. ISDN Cisco VG30D Voice Gateway User Guide GL-2 OL-19276-01...
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NVRAM Originating Line Indicator (ITU-T/CCS #7). Password Authentication Protocol. Perceptual Analysis Measurement System. PAMS Per-Hop Behaviour. Private Branch Exchange. Personal Computer. Power On Self Test. POST Add to the start of. Prepend Cisco VG30D Voice Gateway User Guide GL-3 OL-19276-01...
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Recommended Standard 232 (computer serial interface, IEEE). RS-232 Real Time Control Protocol (RFC 1889). RTCP Switched Circuit Network. Service Indicator Code. Simple Network Management Protocol. SNMP Transmission Control Protocol. Time Division Multiplex. Type of Service. Time Slot. Cisco VG30D Voice Gateway User Guide GL-4 OL-19276-01...
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Glossary User Datagram Protocol. Voice Active Detector. Virtual Private Network. Cisco VG30D Voice Gateway User Guide GL-5 OL-19276-01...