Cisco Systems ATA187I1ARF manual SIP Compliance Reference Information

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Appendix A ATA 187 Specifications

SIP Compliance Reference Information

Table A-6 Software Specifications (All Protocols) (continued)

Description	Specification

Line-echo cancellation	• Echo canceller for each port
	• 8 ms echo length
	• Nonlinear echo suppression (ERL > 28 dB for frequency
		= 300 to 2400 Hz)
	• Convergence time = 250 ms
	• ERLE = 10 to 20 dB
	• Double-talk detection

Out-of-band DTMF	RFC 2833 AVT tones for SIP
	Note Cannot transmit RFC 2833 and in-band signalling,
		simultaneously.

Configuration	•	DHCP (RFC 2131)
	• Web configuration via built-in Web server
	• Touch-tone phone keypad configuration with voice prompt
	• Basic boot configuration (RFC 1350 TFTP Profiling)
	•	Dial plan configuration
	•	Cisco Discovery Protocol

Quality of Service	• Class-of-service (CoS) bit-tagging (802.1P)
	• Type-of-service (ToS) bit-tagging
	Note Does not support CoS service.

Security	RC4 encryption for TFTP configuration files

Voice coder-decoders (codecs)	•	G.729, G.729A, G.729AB
	•	G.711A-law
	•	G.711µ-law

Voice features	• Voice activity detection (VAD)
	• Comfort noise generation (CNG)
	• Dynamic jitter buffer (adaptive)

Voice-over-IP (VoIP) protocols	SIP (RFC 3261 bis)

SIP Compliance Reference Information

Information on how the ATA 187 complies with the IETF definition of SIP as described in RFC 2543 is found at the following URL:

http://www.ietf.org/rfc/rfc2543.txt

Cisco ATA 187 Analog Telephone Adaptor Administration Guide for SIP (Version 1.0)

	A-4	OL-21862-01

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Contents Americas Headquarters Text Part Number OL-21862-01Page N T E N T S IiiInstalling the ATA 187 Privacy Physical Interfaces A-2 Audience PrefaceOverview OrganizationCisco Unified Communications Manager Related DocumentationCisco ATA 187 Analog Telephone Adapter ViiiCisco Unified Communications Manager Business Edition Document ConventionsCisco Product Security Overview Convention DescriptionConvention Description Cisco ATA 187 Analog Telephone Adaptor Overview Cisco Analog Telephone AdaptorSession Initiation Protocol Overview SIP CapabilitiesComponents of SIP SIP Clients Software Features Hardware OverviewTransport Layer Security Protocol Name Signaling Event based passthroughSecure Real-Time Transport Protocol Fax RelayATA 187 SIP Services Modem StandardsFax Services Methods SupportedInstallation and Configuration Overview Supplementary ServicesOL-21862-01 Preparing to Install the ATA 187 on Your Network Providing Power to the ATA Power GuidelinesPower Outage Understanding Phone Configuration Files Understanding the ATA 187 Startup Process Purpose Related TopicsSee Understanding Phone Configuration Files Requires MAC Method Address?Adding the ATA 187 with Auto-Registration Determining the MAC Address of an ATA OL-21862-01 Installing the ATA Network RequirementsSafety Recommendations What the ATA 187 Package IncludesAttaching a Phone to the ATA Installing the ATAProcedure Verifying the ATA 187 Startup ProcessConfiguring Startup Network Settings Configuring Security on the ATAConfiguring the ATA Telephony Features Available for the ATAFeature Description Configuration Reference Unified Communications Manager Features and Services Guide, Client Administration Guide, Date/Time Group Configuring Product Specific Configuration Parameters Configuration Window PathParameter Description Adding Users to Cisco Unified Communications Manager Page OL-21862-01 Configuring Fax Services Using Fax ModeFax Modem Standards Fax Modem Speeds Troubleshooting and Maintenance Resolving Startup ProblemsChecking Network Connectivity Verifying DNS Settings Symptom ATA 187 Unable to Obtain IP Address Verifying Physical Connection ATA 187 Resets UnexpectedlyVerifying Dhcp Settings Identifying Intermittent Network OutagesChecking Static IP Address Settings Verifying Voice Vlan ConfigurationEliminating DNS or Other Connectivity Errors Checking Power Connection Troubleshooting ATA 187 SecurityGeneral Troubleshooting Tips Problem Possible CauseTroubleshooting and Maintenance General Troubleshooting Tips Where to Go for More Troubleshooting Information HalfduxcollisionexceedthresholdCleaning the ATA Using SIP Supplementary Services Common Supplementary ServicesCaller ID Attended TransferCall Pickup Call-Waiting Caller IDPrivacy Group Call PickupMeet-Me Conference Shared LineSpeed Dial RedialUnattended Transfer Voice Mail Indication Voice-Messaging SystemMaking a Conference Call in the United States Call Waiting in Sweden Making a Conference Call in SwedenCall Waiting in the United States About Call ForwardingCall Forwarding in Sweden Cancelling Call ForwardingCall Forwarding in the United States Forward UnconditionalOL-21862-01 Accessing the IVR and Configuring Your Phone Setting Voice Menu CodesAction IVR Code Navigating Notes Vlan IDATA 187 Specifications Physical SpecificationsDescription Specification Electrical Specifications Environmental SpecificationsPhysical Interfaces Ringing Characteristics Software SpecificationsSIP Compliance Reference Information Recommended ATA 187 Tone Parameter Values by Country Parameter Recommended ValuesTable B-3 Italy Numerics GL-1GL-2 PBX GL-3GL-4 GL-5 GL-6 GL-7 GL-8 Symbols IN-1Dhcp IN-2Dhcp DNS IN-3Vlan IN-4