Cisco Systems ATA 186 Using rtpcatch for Diagnosing Fax Problems, Rtpcatch Overview, How to Use

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Chapter 6 Configuring and Debugging Fax Services

Debugging the Cisco ATA 186/188 Fax Services

Using rtpcatch for Diagnosing Fax Problems

This section contains the following topics:

rtpcatch Overview, page 6-12

Example of rtpcatch, page 6-13

Analyzing rtpcatch Output for Fax Sessions, page 6-16

Using rtpcatch to Analyze Common Causes of Failure, page 6-17

rtpcatch Limitations, page 6-19

rtpcatch Overview

rtpcatch is a tool that provides comprehensive information for a VoIP connection. The tool runs on a Microsoft Windows-based PC and is capable of parsing an output capture file from Network Associates (NAI) Sniffer Pro and identifies significant fax pass-through and fax relay events.

Major functions

rtpcatch includes the following major functions:

Reads session data from Sniffer Pro capture files.

Analyzes media streams.

Stores media streams to files.

Reports RTP statistics such as the number of RTP packets, the number of RTP frames, the number of lost packets, the number of filler packets during silence suppression periods, and the number of erased packets.

How to Use

To use rtpcatch, follow these steps:

Procedure

Step 1 Create a working directory for rtpcatch and place the executable file rtpcatch.exe in this directory.

Step 2 Copy your Network Associates Sniffer Pro capture files into this directory.

Step 3 At the DOS prompt of this directory, enter the following command:

:>rtpcatch <cap_file> [<prefix>] [options]

<cap_file> is the NAI Sniffer capture file.

<prefix> is the prefix prepended to the output filenames.

Output Files

The output files of rtpcatch include a summary file and audio stream files.

The summary file is <prefix>.sum if <prefix> is specified, otherwise it is file.sum.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SCCP)

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Ol-3141-01

 

 

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Contents Corporate Headquarters Text Part Number OL-3141-01Copyright 2003, Cisco Systems, Inc All rights reserved N T E N T S IiiWhat You Need DNS1IP DNS2IP Recommended Values Syntax ViiCisco ATA Style Conference Calling Procedure A-7 ViiiPreface OverviewAudience OrganizationConventions Preface Conventions Cisco IOS Telephony Service documentation Related DocumentationObtaining Documentation Cisco.comInternational Cisco web sites can be accessed from this URL Documentation CD-ROMOrdering Documentation Documentation FeedbackObtaining Technical Assistance Technical Assistance CenterCisco TAC Website XivObtaining Additional Publications and Information Cisco TAC Escalation CenterXvi Cisco Analog Telephone Adaptor Overview A P T E ROverview of the Skinny Client Control Protocol 4illustrates the architecture of an Sccp networkHardware Overview Link LEDFunction Button Sccp Version Software FeaturesVoice Codecs Supported Basic Services Additional Supported Signaling ProtocolsOther Supported Protocols Fax Services Pre-call and Mid-call ServicesPre-call Services Pre-call Services, Mid-call Services,Mid-call Services Style and Related Services Procedure ReferenceCisco ATA style services Cisco ATA Style, page A-6 Bellcore Style, page A-4Installation and Configuration Overview Action ReferenceOL-3141-01 Installing the Cisco ATA Network Requirements Safety RecommendationsWhat the Cisco ATA Package Includes 5V power adaptor Power cord Installation ProcedureWhat You Need Procedure Cisco ATA 186 Rear Panel ConnectionsInstalling the Cisco ATA Installation Procedure Power-Down Procedure Configuring the Cisco ATA for Sccp Default Boot Load Behavior Page VLANSetting FeatureParameter and Bits Reference BitsHexadecimal format, this value is 0x01cc002b Steps Needed to Configure the Cisco ATA Action ReferenceBasic Configuration Steps in a Non-TFTP Server Environment Configuring the Cisco ATA Using a Tftp ServerAction Setting Up the Tftp Server with Cisco ATA Software Configurable Features and Related ParametersConfigurable Features Related Parameters Creating a Cisco ATA Default Configuration File Parameters Not Used for SccpSyntax of the cfgfmt program follows SyntaxYou could change the values as follows Creating a Configuration File for a Specific Cisco ATASave your changes Using atapname.exe Tool to Obtain MAC Address Cfgfmt -tmgcpptag.dat ata0a141e28323c.txt ata0a141e28323cUsing the EncryptKey Parameter and cfgfmt Tool Command ExampleCommand Output Syntax examplesUsing a Dhcp Server, Using a Dhcp ServerWithout Using a Dhcp Server, Procedure Without Using a Dhcp Server Other Dhcp Options You Can SetVoice Configuration Menu Using the Voice Configuration MenuVoice Menu Number Features Entering Alphanumeric Values Resetting the Cisco ATA to Factory Default ValuesKey Alphanumeric Characters Cisco ATA Web Configuration DNS1IP Resetting the Cisco ATA Using Cisco CallManager Upgrading the Sccp Signaling Image Confirmation box appears. Click OKAdding the Cisco ATA to the Cisco CallManager Default value of None Adding Cisco ATAs ManuallyTime Click OKUsing the Cisco Bulk Administration Tool BAT Using Auto-Registration Parameters and Defaults Configuration Text File Template CA0UID0 CA1UID0UIPassword User Interface UI ParameterParameters for Configuration Method and Encryption SettingsRange Default Voice Configuration Menu Access Code UseTFTPEncryptKey Maximum 31 characters905 UseTFTP, Domain,Network Parameters 320UseTFTP, TftpURL, DHCP, StaticIp, StaticRoute, StaticNetMask,Voice Configuration Menu Access Code Related Parameters StaticIpStaticRoute DHCP, StaticRoute, StaticNetMask,Account Information Parameters StaticNetMaskEPID0orSID0 and EPID1orSID1 Value TypesCA0orCM0 and CA1orCM1 Voice Configuration Menu Access CodesExamples Sccp Mode Parameter Operating ParametersUseMGCP Other ParametersLBRCodec IntegerPrfCodec AudioModeConnectMode, page 5-13bit AudioMode, page 5-12bits 1 LBRCodec, ConnectMode,ConnectMode Bit Number Definition0x90000400 311To Use Pre-call and Mid-call Services CallerIdMethod0x00019e60 316916 DHCP,Domain 917OpFlags NumTxFramesTftpURL, CA0orCM0 and CA1orCM1, TftpURL, DHCP, VLANSetting, VLANSettingSee the VLANSetting section on SigTimer Optional Feature ParametersCallWaitTone, Default Recommended Values RingCadenceCall-Progress Tone Parameters List of Call-Progress Tone ParametersTone Parameter Syntax Each tone is specified by nine integers, as followsRecommended Values How to Calculate Scaling FactorsUse the following formula to calculate the scaling factor a Default values for the nine-integer array Specific Call-Progress Tone Parameter InformationDialTone 920Cisco ATA plays the busy tone when the callee is busy BusyToneReorderTone 921RingbackTone CallWaitTone923 924NPrintf ConfirmTone925 Extended IP addressRange Default UDPTOS, VLANSetting,TraceFlags MediaPortPage Configuring and Debugging Fax Services Using Fax Pass-through ModeConfiguring the Cisco ATA for Fax Pass-through mode This setting translates to the following bitmapAudioMode AudioMode, ConnectMode,Configuring Cisco IOS Gateways to Enable Fax Pass-through Recommended SettingThis setting translates to the bitmap Enable Fax Pass-through Mode, Disable Fax Relay Feature,System Level commands Enable Fax Pass-through ModeRun the following command Dial-Peer Level Commands Disable Fax Relay FeaturePerform the command Using FAX Mode Configuring the Cisco ATA for Fax ModeDebugging the Cisco ATA 186/188 Fax Services Configuring the Cisco IOS Gateway for Fax ModeCommon Problems When Using IOS Gateways Run the commandPrserv Overview Using prserv for Diagnosing Fax ProblemsPrserv Overview, Analyzing prserv Output for Fax Sessions, Analyzing prserv Output for Fax Sessions Log event DescriptionDecoding timestamp was set to timestamp2 That the first RTP packet that the Cisco ATA received was100 Debugging FAX Pass-through ModeTerminating-Gateway Example Originating-Gateway Example Debugging FAX ModePossible Reasons for Failure Using rtpcatch for Diagnosing Fax Problems How to UseRtpcatch Overview Major functionsOptions Example of rtpcatchOutput Explanation CED tone Detected1032.116=2.213 Fax relay mode Cisco fax relay mode Analyzing rtpcatch Output for Fax SessionsAnalysis Both sides use G.711 for the entire fax sessionUsing rtpcatch to Analyze Common Causes of Failure Possible Causes for FailureCisco fax relay option is not disabled on the gateway Possible Cause for FailureExample 6-10 Fax Pass-through Mode Failure Rtpcatch LimitationsPage Upgrading the Cisco ATA Signaling Image Upgrading the Signaling Image Via Cisco CallManager Procedure for Upgrading all Cisco ATAs at OnceProcedureforUpgradingOneCiscoATA Upgradecode SyntaxUpgradecode Definitions Running the ExecutableUpgrading the Signaling Image Manually Preliminary StepsRunning the Executable File Preliminary Steps, Running the Executable File,Upgrade Requirements Upgrade ProcedureSyntax DefinitionsConfirming a Successful Signaling Image Upgrade Using a Web BrowserUsing the telephone keypad, enter the following Using a Web Browser, Using the Voice Configuration Menu,Using the Voice Configuration Menu OL-3141-01 Troubleshooting General Troubleshooting TipsSymptoms and Actions Installation and Upgrade Issues Restarting the Cisco CallManager You should also have access to a sniffer or LAN analyzer DebuggingFrequently Asked Questions Ring Load per RJ-11 FXS Port Maximum DistanceProcedure Contacting TAC Procedures for Using Pre-call Services How to Use Pre-call and Mid-call ServicesAccess Voicemail Cancel Call-Forward-All Activate Call-Forward-AllRedial Speed DialTo use this feature, follow these steps Call PickupGroup Call Pickup MeetMe ConferenceProcedures for Using Mid-call Services Bellcore Style Call Transfer ProcedureBellcore Style Conference Call Procedure Bellcore StyleCisco VG248 Call Transfer Procedure Cisco VG248 Style Three-way Calling ProcedureCisco VG248 Style Cisco VG248 Conference Call Procedure Cisco ATA Style Call Hold/Resume ProcedureCisco ATA Style Call Transfer Procedure Cisco ATA StyleCisco ATA Style Conference Calling Procedure OL-3141-01 Table B-1lists codes to return basic Cisco ATA information Voice Menu CodesVoice Menu Option Code Description 916 IP address of the primary DNS server DNS 2 IPTable B-3 Cisco ATA Voice Menu Codes-Software Upgrade OL-3141-01 Physical Specifications Cisco ATA SpecificationsSpecification Electrical Specifications for Cisco ATA Environmental SpecificationsImmunity Specifications Description SpecificationRinging Characteristics Software SpecificationsPhysical Interfaces Tip/ring interfaces for each RJ-11 FXS port SlicAppendix C Cisco ATA Specifications Software Specifications Sccp OL-3141-01 Supported Sccp Message Set Sccp Call FlowsThis section describes basic call flows for the Cisco ATA Appendix D Sccp Call Flows Supported Sccp Message Set Call Flow Scenarios for Successful Calls Cisco ATA-to-Cisco CallManagerStep Action Description ATACisco ATA-to-Cisco CallManager-to-Cisco ATA Step Station Call Info DescriptionStep Station Call Info Description Step Station Call Info Description OL-3141-01 Syntax of upgradecode Parameter Performing a Cross-Protocol UpgradeProcess Upgradecode parameter value could be GL-1 GL-2 GL-3 GL-4 Messages can be part of Sgcp and Mgcp messages Signaling connection control partGL-5 GL-6 Business-class services for Internet telephony TrafficAllow you to define your own customized markup language GL-7GL-8 IN-1 CallerIdMethod ConnectMode Dhcp EncryptKeyEnabling use IN-2IN-3 RTP frames RTP media port configuration IN-4Safety recommendations Scaling factor calculation IN-5IP encapsulation IN-6
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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.