SIP Compliance Reference Information | Cisco Systems ATA187I1ARF

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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Cisco Systems ATA187I1ARF manual SIP Compliance Reference Information

Contents

Americas Headquarters Text Part Number OL-21862-01Page N T E N T S Iii Installing the ATA 187 Privacy Physical Interfaces A-2 Audience PrefaceOverview Organization Cisco Unified Communications Manager Related DocumentationCisco ATA 187 Analog Telephone Adapter Viii Cisco Unified Communications Manager Business Edition Document ConventionsCisco Product Security Overview Convention Description Convention Description Cisco ATA 187 Analog Telephone Adaptor Overview Cisco Analog Telephone Adaptor Session Initiation Protocol Overview SIP Capabilities Components of SIP SIP Clients Software Features Hardware Overview Transport Layer Security Protocol Name Signaling Event based passthroughSecure Real-Time Transport Protocol Fax Relay ATA 187 SIP Services Modem Standards Fax Services Methods Supported Installation and Configuration Overview Supplementary Services OL-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 Topics See 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 Requirements Safety Recommendations What the ATA 187 Package Includes Attaching a Phone to the ATA Installing the ATAProcedure Verifying the ATA 187 Startup Process Configuring Startup Network Settings Configuring Security on the ATA Configuring 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 Problems Checking 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 Outages Checking Static IP Address Settings Verifying Voice Vlan ConfigurationEliminating DNS or Other Connectivity Errors Checking Power Connection Troubleshooting ATA 187 SecurityGeneral Troubleshooting Tips Problem Possible Cause Troubleshooting and Maintenance General Troubleshooting Tips Where to Go for More Troubleshooting Information Halfduxcollisionexceedthreshold Cleaning the ATA Using SIP Supplementary Services Common Supplementary Services Caller ID Attended TransferCall Pickup Call-Waiting Caller ID Privacy Group Call PickupMeet-Me Conference Shared Line Speed 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 Forwarding Call Forwarding in Sweden Cancelling Call ForwardingCall Forwarding in the United States Forward Unconditional OL-21862-01 Accessing the IVR and Configuring Your Phone Setting Voice Menu Codes Action IVR Code Navigating Notes Vlan ID ATA 187 Specifications Physical SpecificationsDescription Specification Electrical Specifications Environmental SpecificationsPhysical Interfaces Ringing Characteristics Software Specifications SIP Compliance Reference Information Recommended ATA 187 Tone Parameter Values by Country Parameter Recommended Values Table B-3 Italy Numerics GL-1 GL-2 PBX GL-3 GL-4 GL-5 GL-6 GL-7 GL-8 Symbols IN-1 Dhcp IN-2 Dhcp DNS IN-3 Vlan IN-4