Nortel Networks CTA 500dm manual Bearer Capabilities, Link Assumptions

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other authentication protocol is selected, the CTA 500dm will not be able to use MP and the call must be redialed using PPP.

Link Assumptions

For PPP and MP, it is assumed that the links are CRC-16 with

Maximum Receive Units (MRU) less than 1750 bytes.

For MP, it is assumed that call back is not required and that both links can be identically conÞgured.

Bearer Capabilities

The use of ISDN and digital networks allows a user to select a number of different bearer capabilities and data rates. Using a bearer capability gives the network information about how it should treat the call. In general, data cannot be sent over one of the voice bearer capabilities (3.1 kHz audio and speech). However, in some cases, especially on local calls, it may be possible to support 56 kbit/s and even 64 kbit/s data rates over voice calls. The CTA 500dm supports this capability.

To do this, your ISP must set up special dial-in phone numbers. Ask your ISP about this feature if you are using CTA 500dm where data calls are more expensive than voice calls.

P0873832 Issue 05

CTA 500dm On Line Guide

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Contents CTA 500dm in the Digital Network CTA 500dmCTA 500dm Applications Internet accessDial-Up Networking Data-to-data transfersAbout this document CTA 500dm feature summaryFirst-time setup First-time setup CTA 500 dm On Line Guide P0873832 Issue Installation and setup Wall mounting the CTA 500dm Shock hazardCTA 500dm bottom view Compact ICS Modular ICS Setting up the ICSSetting up the PC Configuration Configuring the PC serial port None of the above 14 Configuration Configure CTA 500dm to access PP/MP data calls Adding multiple CTA 500dm configurations Upgrading the CTA 500dm software Uninstalling the CTA 500dm18 Configuration CTA 500dm On Line Guide P0873832 Issue Configure Tapi dialing properties Installing Norstar Tapi SPInstalling Personal Call Manager Using PCM for the first time Page Resource sharing Allowing access to your PC Installing Dial-Up ServerConnecting to a Windows 95 Dial-Up Server Connecting to Resources on the Dial-Up Server Method oneMethod two Click OK Resource sharing CTA 500dm On Line Guide P0873832 Issue AT commands Profile Profile commands summaryLoad Stored Profile Load Stored Profile on Start-upResult Codes Write Active Profile to Memory StateState commands summary Enter Download State Return to On-line Data StateGeneral General commands summaryEscape Sequence Result CodePage Request Identification Set Local Echo View ParametersDisplay Saved Dial String Save Dial StringResult Code Suppression Control Verbose ControlRegister commands summary RegistersCall Monitoring Result Code Selection Query S-Register Set S-RegisterRegister set Call Control commands summary Dial CommandCall Control Result Codes Answer Command Outgoing Call Control commands summary Hook CommandOutgoing Call Bearer Service Control Outgoing Call ControlChannel Speed Control Incoming Call ControlIncoming Voice Bearer Call Rate Incoming Call Control commands summaryAudio Bearer Call Answer Control Speech Bearer Call Answer ControlRinging Indications Data Bearer Call Answer ControlTCM Port Protocol Selection Command TCM Ports Protocol SelectionRate Adaptation Protocol Selection MP command summary CTI MUX ModeRate Multiplier Serial Interface commands summary Serial InterfaceSerial Interface Rate Set Data Bits Set ParitySerial Interface Control Lines Set Stop BitsFlow Control Serial Interface Control Lines commands summaryAT commands Value Use Not supported DTR Operation DCD OperationCTS Operation AT commands ValueCalling Line ID DSR OperationRI Operation Calling Line ID Delivery Control Calling Line ID commands summaryResult Codes Calling Line ID QueryCaller ID Security Caller ID security commands summary Caller ID Security Mode SelectionAdd Number Delete Number Clear ListView List Summary of AT commands CTA 500dm On Line Guide Page XON/XOFF Page Troubleshooting Power problem?LED problem? CTA 500dm does not respond to AT commands sent from your PC AT command problem?Data call problem? PC receives bad data after a data call connection CTA 500dm loses data after a data call connectionCTA 500dm hangs up during a data call For equipment with internal mains supplies AppendixImportant Safety Instructions For equipment with external mains adaptersPlease Read Carefully Network Connection Canada, United States Canadian and US RegulationsFor Class B Host equipment For Class a Host equipmentAddress for warranty and repairs in the United States Warranty InformationRate adaptation protocol specifications Point-to-Point ProtocolMultilink PPP Link Assumptions Bearer CapabilitiesCTA 500dm LED Initialization strings Numeric CTA 500dm responsesDB-25 connection DB-25 and DB-9 signal summaryDB-9 connection Acronyms used in this documentCTA 500dm On Line Guide P0873832 Issue

CTA 500dm specifications

Nortel Networks CTA 500dm is a versatile and robust communications technology platform specifically designed to enhance network solutions for businesses and organizations. With a keen focus on delivering high-performance connectivity, the CTA 500dm serves as a critical component in managing voice, video, and data traffic within a unified communications environment.

One of the standout features of the CTA 500dm is its scalability. The platform supports a variety of deployment scenarios, making it suitable for organizations of varying sizes, from small businesses to large enterprises. This scalability allows for seamless upgrades and expansions, ensuring that businesses can adapt their network solutions to meet evolving demands without requiring a complete overhaul of their existing infrastructure.

The CTA 500dm incorporates advanced technologies such as Session Initiation Protocol (SIP), which is essential for facilitating real-time communication sessions, including VoIP calls and video conferencing. SIP allows for the integration of various communication channels, providing users with a unified experience while streamlining management for IT teams. Moreover, the platform supports Quality of Service (QoS) mechanisms, which help prioritize voice and video traffic to ensure optimal performance, reducing latency and enhancing the overall user experience.

Another characteristic of the CTA 500dm is its comprehensive security features. The platform includes robust encryption methods and authentication protocols to safeguard data and voice communications from potential threats. This is particularly vital in an era where cyber threats are increasingly sophisticated, ensuring that organizations can maintain secure operations while conducting vital communications.

Furthermore, the CTA 500dm is designed with user-friendliness in mind. Its intuitive interface simplifies management and configuration tasks, allowing IT administrators to efficiently oversee the system without requiring extensive training or specialized knowledge. Coupled with extensive monitoring and reporting tools, administrators can gain valuable insights into network performance and troubleshoot issues proactively.

In conclusion, the Nortel Networks CTA 500dm stands out as a powerful solution for organizations looking to optimize their communication infrastructure. With its scalability, support for advanced technologies like SIP, strong security features, and user-friendly management capabilities, the CTA 500dm delivers a comprehensive platform for modern communications, ensuring that businesses remain connected, productive, and secure in today’s fast-paced digital landscape.
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