Cisco Systems ATA 188 manual Configuring and Debugging Fax Services, Using Fax Pass-through Mode

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C H A P T E R 6

Configuring and Debugging Fax Services

The Cisco ATA provides two modes of fax services that are capable of internetworking with Cisco IOS gateways over IP networks. These modes are called fax pass-through mode and fax mode.

With fax pass-through mode, the Cisco ATA encodes fax traffic within the G.711 voice codec and passes it through the Voice Over IP (VoIP) network as though the fax were a voice call. This mode uses the Cisco proprietary fax upspeed method.

With fax mode, the Cisco ATA presents itself as a device capable of using only G.711 codecs; therefore, no codec renegotiation or switchover is required. This places minimum functionality and configuration requirements on remote gateways. Fax mode is recommended for environments in which G.711 fax upspeed is not available for the supporting Cisco gateways.

This section contains the following topics:

Using Fax Pass-through Mode, page 6-1

Using FAX Mode, page 6-6

Debugging the Cisco ATA 186/188 Fax Services, page 6-7

Note The term Cisco ATA is used throughout this manual to refer to both the Cisco ATA 186 and the Cisco ATA 188, unless differences between the Cisco ATA 186 and Cisco ATA 188 are explicitly stated.

Using Fax Pass-through Mode

Fax pass-through mode allows for maximum codec flexibility because users may set up a voice call using any voice codec, then renegotiate to a G.711 codec for the fax session. To use fax pass-through mode, first configure the Cisco ATA and supporting Cisco gateways to support the Cisco-proprietary G.711fax upspeed method. Then, disable fax relay on the far-end gateway—either for the entire gateway or for the dial peer engaged in the fax call with the Cisco ATA.

The fax upspeed method allows you to use low bit-rate codecs such as G.723 and G.729 for voice calls, and G.711 codecs for fax calls. With a fax call, the Cisco ATA detects a 2100-Hz CED tone or V.21 preamble flag, then informs the remote gateway of its intent to switchover to G.711 via a peer-to-peer message. This type of message, carried as a Named Signaling Event (NSE) within the RTP stream, is used for all fax event signaling. The Cisco ATA can initiate and respond to NSEs and can function as either an originating or terminating gateway.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

 

OL-4803-01

6-1

 

 

 

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Contents Text Part Number OL-4803-01 Corporate HeadquartersCopyright 2003, Cisco Systems, Inc All rights reserved Iii N T E N T SSafety Recommendations Dhcp CA0UID CA1UID Vii NPrintf TraceFlagsViii Installation and Upgrade IssuesThis preface includes the following sections ObjectivesAudience Chapter Description Organization and UseConventions OrganizationBewaar Deze Instructies Xii Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Xiii Aviso Instruções Importantes DE SegurançaXiv Related DocumentationUse this guide in conjunction with these documents Ordering Documentation Obtaining DocumentationCisco.com Documentation CD-ROMXvi Obtaining Technical AssistanceDocumentation Feedback You can order Cisco documentation in these waysXvii Technical Assistance CenterCisco TAC Website Cisco TAC Escalation CenterXviii Obtaining Additional Publications and InformationCisco Analog Telephone Adaptor Overview Pstn Overview of Media Gateway Control ProtocolLink LED Hardware OverviewFunction Button Voice Codecs Supported Software FeaturesCisco ATA supports the following protocols and services Mgcp Versions729A 729B 729.AB Additional Supported Signaling ProtocolsCisco ATA Mgcp Services Other Supported ProtocolsService Parameter Fax ServicesSupplementary Services that the Cisco ATA Provides Supplementary Services that the Call Agent Provides Action Reference Installation and Configuration OverviewSignaling image by using the Tftp server-upgrade method or Manual-upgrade methodOL-4803-01 Installing the Cisco ATA What the Cisco ATA Package Includes Safety RecommendationsNetwork Requirements What You Need Installation Procedure5V power adaptor Power cord Cisco ATA 186 Rear Panel Connections ProcedureInstalling the Cisco ATA Installation Procedure Power-Down Procedure Configuring the Cisco ATA for Mgcp Default Boot Load Behavior Page Bits VLANSettingFeature Parameter and Bits ReferenceHexadecimal format, this value is 0x01cc002b Steps Needed to Configure the Cisco ATABasic Configuration Steps in a Tftp Server Environment Action Reference Tftp server at boot up timeAction Basic Configuration Steps in a Non-TFTP Server EnvironmentConfigurable Features and Related Parameters Configuring the Cisco ATA Using a Tftp ServerSetting Up the Tftp Server with Cisco ATA Software Creating Unique and Common Cisco ATA Configuration Files Syntax Save this file of Cisco ATA-specific parameters asCfgfmt -mgcp -tptag.datata0a141e28323c.txt ata0a141e28323c Using atapname.exe Tool to Obtain MAC AddressCommand Output Using Encryption With the cfgfmt ToolCommand Example Non-zero Total Binary Output SizeSyntax Definitions-Required Parameters Syntax of the cfgfmt tool followsSyntax Definitions-Options Syntax examples Examples of Upgrading to Stronger Encryption KeyAta102030405060 is unencrypted Atadefault.cfg Configuration File Using a Dhcp Server, Using a Dhcp ServerOther Dhcp Options You Can Set Without Using a Dhcp Server Voice Configuration MenuVoice Menu Number Features Using the Voice Configuration MenuVoice Menu Number Entering Alphanumeric ValuesKey Alphanumeric Characters Cisco ATA Web ConfigurationResetting the Cisco ATA to Factory Default Values Cisco ATA Web Configuration Refreshing or Resetting the Cisco ATA Procedure to Reset the Cisco ATA Upgrading the Mgcp Signaling ImageProcedure to Refresh the Cisco ATA Cisco ATA-Supported Mgcp Services Required Parameters Important Basic Mgcp ServicesSetting the Codec Configuring Refresh IntervalEndpoints and Connections Additional Mgcp ServicesSyntax Type Call Agent Redundancy with Configuration ParametersMgcp Endpoint Device Type Cisco ATA Registration Process with MgcpRsip Message for Disconnect State Complete Reference Table of all Cisco ATA Mgcp ServicesConfigurable Feature Related Parameter Related CIsco ATA Parameter Supported Signals and EventsSupported Mgcp Connection Modes Supported Local Connection OptionsCode Description Type Intermittent dial tone Timer Dtmf inputNCS 1.0 L-Package Supported by the Cisco ATA with Mgcp Wt1, wt2, wt3, wt4 Call-waiting tone Dtmf tones wildcard Mgcp 0.1-1.0 L-Package Supported by the Cisco ATA with MgcpMgcp 0.1-1.0 G-Package Supported by the Cisco ATA with Mgcp Operation failed Rbk### Rt@connection id Commands Supported with MgcpMgcp 0.1-1.0 D-Package Supported by the Cisco ATA with Mgcp Parameter Usage Parameters in Commands Sent to the Call AgentParameters in Responses Sent to the Call Agent Mgcp Embedded Events Example HdA, ESdl, Roc, 0-9#TD, D1xxxxxxxxxx9011x.T OL-4803-01 Parameters and Defaults IP address e.g Integer 32-bit integer Numeric digit string Configuration Text File TemplateRange UIPasswordUser Interface UI Security Parameter Value TypeUseTFTP Parameters for Configuration Method and Encryption905 TftpURLCfgInterval Maximum 31 charactersEncryptKey EncryptKeyEx Not applicable for this parameter Network Configuration ParametersRange Default IP address Voice Configuration Menu Access Code Related ParametersStaticIp StaticRoute916 StaticNetMask255.255.255.0 Related parameter Vlan SettingExamples Mgcp Configuration ParametersCA0orCM0 Specify the ID of the primary Call Agent in this parameter CA1orCM1Value Types Voice Configuration Menu Access CodesEPID0orSID0 and EPID1orSID1 Integer PrfCodecLBRCodec 201 MGCPPort300 2427RetxLim MediaPortRetxIntvl Alphanumeric MGCPVerDomain 205931 Audio Configuration ParametersCodecName Bit Number Definition Default NamesAudioMode CallerIdMethod Operational ParametersNumTxFrames Parameters and Defaults Operational Parameters FXSOutputLevel FXSInputLevel311 ConnectMode371 0x90000400Bit Number SigTimer 0x2 OpFlagsBit Number Definition 255 Tone Configuration Parameters0x000068B8 Each tone is specified by nine integers, as follows Tone Parameter Syntax-Basic FormatEach tone is specified by 11 integers, as follows Tone Parameter Syntax-Extended FormatsExtended Format a Cadence With Two On-Off Pairs Extended Format BCadence with Three On-Off Pairs ReorderTone Parameter Example1 Component Setting ExplanationReorderTone Parameter Example DialTone Default values using the Basic formatRecommended Values Specific Tone Parameter InformationReorderTone BusyTone923 RingbackToneCallWaitTone 922925 AlertToneOffTime-2400 TotalToneTime-4800 924NPrintf Diagnostic ParametersDefault Recommended Values RingCadence0x00000000 TraceFlagsSyslogIP Extended IP addressBit Number Type of Messages to Trace SyslogCtrlRTP statistics messages Reserved CFGID-Version Parameter for Cisco ATA Configuration FileOL-4803-01 Using Fax Pass-through Mode Configuring and Debugging Fax ServicesAudioMode Configuring the Cisco ATA for Fax Pass-through modeFax Pass-through mode requires configuring two parameters This setting translates to the following bitmapConnectMode Configuring Cisco IOS Gateways to Enable Fax Pass-throughRecommended Setting This setting translates to the bitmapRun the following command Enable Fax Pass-through ModePerform the command Disable Fax Relay FeatureConfiguring the Cisco ATA for Fax Mode Using FAX ModeProblem Action Debugging the Cisco ATA 186/188 Fax ServicesConfiguring the Cisco IOS Gateway for Fax Mode Common Problems When Using IOS GatewaysPort Using prserv for Diagnosing Fax ProblemsCisco ATA, and 0x0012XXXX for the Phone 2 port For fax pass-through mode, AudioMode should be set toAnalyzing prserv Output for Fax Sessions Prserv OverviewEncoded for channel Log event DescriptionDecoding timestamp was set to timestamp2 That the first RTP packet that the Cisco ATA received wasPossible Reasons for Failure Originating-Gateway ExampleTo use rtpcatch, follow these steps Using rtpcatch for Diagnosing Fax ProblemsRtpcatch Overview Output Files Example of rtpcatchExplanation CED tone Detected Both sides use G.711 for the entire fax session Fax relay mode Cisco fax relay modeAnalyzing rtpcatch Output for Fax Sessions AnalysisExample 6-3 Fax Pass-through Mode Using rtpcatch to Analyze Common Causes of FailurePossible Cause for Failure Cisco fax relay option is not disabled on the gatewayPossible Causes for Failure Example 6-9 Fax Pass-through Mode Failure Rtpcatch Limitations Definitions Upgrading the Signaling Image from a Tftp ServerSyntax of upgradecode Parameter Process Upgrading the Signaling Image ManuallyUpgradecode parameter value could be Syntax Upgrade RequirementsPreliminary Steps Running the Executable FileTo perform the upgrade, follow these steps Upgrade ProcedureUsing a Web Browser Confirming a Successful Signaling Image UpgradeOL-4803-01 General Troubleshooting Tips TroubleshootingSymptoms and Actions Installation and Upgrade Issues Debugging 2* 1 1* 2* 8* 1 1* 7* 8* 1 1* 9* 0* 1 1* 9* 0* 0 You should also have access to a sniffer or LAN analyzerSyntax Definitions Using System DiagnosticsMessage Syntax PriorityTimeOffset Ataip tag chMessageExample-TFTP messages Example-ARP MessageExample-DHCP Messages Example-Cisco ATA Event Messages Example-Cisco ATA Configuration Update MessageExample-System Reboot Message Example-RTP Statistic Messages Local Tone Playout ReportingExample-Fax Event Messages Tone Type ID Description Bit Number Description Boolean Value Obtaining Network Status After Getting IP ConnectivityBit Number Description Checksum error for configuration file Cisco ATA failed to upgrade to the downloaded image fileConfiguration file is not found Bad configuration fileReal-Time Transport Protocol RTP Statistics Reporting Dhcp Status HtmlRing Load per RJ-11 FXS Port Maximum Distance Frequently Asked QuestionsResetting Cisco ATA counters Contacting TAC OL-4803-01 Voice Menu Option Code Description Table A-1lists codes to return basic Cisco ATA informationDNS 2 IP 916 IP address of the primary DNS serverTftp URL OL-4803-01 Specification Physical SpecificationsThis section describes Cisco ATA specifications Dimensions WeightPhysical Interfaces Electrical Specifications for Cisco ATAEnvironmental Specifications Description SpecificationTip/ring interfaces for each RJ-11 FXS port Slic Ringing CharacteristicsSoftware Specifications Appendix B Cisco ATA Specifications Software Specifications Sccp OL-4803-01 Mgcp Call Flows Appendix C Mgcp Call Flows Step Action Log OK-Cisco ATA 2 to Call Agent Cisco ATA 1 dials 6-Cisco ATA 1 to Call AgentCisco ATA 2 phone rings and displays Cisco ATA 1 ID on CID Device-Call Agent to Cisco ATARingback stops on Cisco ATA 1-Call Agent to Cisco ATA Routing Update Protocol RTP Media stream is now enabled onRTP Media stream is now enabled on Cisco ATA 1. Both Cisco ATA 2-Call Agent to Cisco ATAAgent to Cisco ATA ATA 2 Connection mode changes to receive-only-Call Agent toCisco ATA 2 hangs up-Cisco ATA 2 to Call Agent Cisco ATA 2 Connection is deleted-Call Agent to Cisco ATARecommended Cisco ATA Tone Parameter Values by Country OL-4803-01 Table D-1 Argentina Table D-5 Brazil Table D-9 Czech Republic Table D-13 France Table D-17 Hungary Table D-21 Ireland Table D-25 Korea Table D-29 Netherlands Table D-33 Panama Table D-37 Portugal Table D-41 Slovakia Table D-45 Sweden Parameter Recommended Values OL-4803-01 GL-1 GL-2 GL-3 GL-4 GL-5 Signaling connection control partMessages can be part of Sgcp and Mgcp messages GL-6 GL-7 Business-class services for Internet telephonyTraffic Allow you to define your own customized markup languageGL-8 IN-1 BootloadCodec negotiation in sending fax Codecs Cabling requirements LBRCodec Call Agent SupportedIN-2 CallerIdMethod CfgInterval CodecName ConnectMode DhcpEncryptKey IN-3 IN-4 Debugging ServicesFax mode 6-1,6-6 Configuration Fax relay disablingIN-5 IN-6 Cisco ATA RSIP*@ipaddress syntax settingRTP payload type RTP statistics reporting IN-7 IN-8
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ATA 188, ATA 186 specifications

The Cisco Systems ATA 186, or Analog Telephone Adapter, revolutionized the way traditional telephony interacted with Voice over Internet Protocol (VoIP) systems. Designed primarily for home and small office use, the ATA 186 allows users to connect standard analog phones and fax machines to a network, enabling them to take advantage of the benefits of VoIP technology.

One of the defining features of the ATA 186 is its dual port architecture. It includes two FXS ports, allowing users to connect up to two analog telephones. This functionality means that multiple devices can leverage VoIP services simultaneously without the need for separate adapters for each phone. The flexibility of the ATA 186 helps streamline the user experience, facilitating voice communication over an IP network while ensuring users can still use their existing phone equipment.

The ATA 186 employs various technologies to maintain high-quality voice calls. It supports standard voice codecs such as G.711 and G.729, which ensure efficient bandwidth usage while preserving call clarity. The adaptive jitter buffer technology further enhances call quality, compensating for network variations and minimizing latency, which is crucial for clear and uninterrupted conversations.

Additionally, the ATA 186 provides users with advanced calling features that were traditionally available only on PBX systems. These features include caller ID, call waiting, and voicemail functionality, integrating seamlessly with typical telephony services. The device also supports T.38 fax relay, allowing users to send and receive faxes over the internet, thus addressing the needs of environments where fax communication remains essential.

The security of VoIP conversations is also a priority for the ATA 186. It employs encryption protocols such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), ensuring that voice data is securely transmitted across the network. This focus on security helps protect sensitive information transmitted during calls.

Installation and configuration of the ATA 186 is streamlined, with an intuitive web-based interface that simplifies the setup process. This accessibility makes it suitable for users with varying levels of technical expertise, as frequently required adjustments, such as network configurations and firmware updates, can be easily managed.

In conclusion, the Cisco Systems ATA 186 stands out as a versatile and robust solution for users looking to integrate analog phones into a VoIP environment. With its dual port capabilities, high-quality voice codecs, advanced call features, and security measures, it offers a compelling choice for both residential and commercial users seeking seamless telephony integration. As technology evolves, devices like the ATA 186 remain cornerstones in bridging traditional telephony with modern communication systems.