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Table Of Contents
Release Notes for the Cisco ATA 186 and Cisco ATA 188 Release 2.16
Introduction to the Cisco ATA Analog Telephone Adaptor
Downloading and Upgrading the Software
Changes in Release 2.15 for SIP and H.323
Resolved Issues in Cisco ATA Release 2.16
Open Issues in Cisco ATA Release 2.16
Obtaining Technical Assistance
Release Notes for the Cisco ATA 186 and Cisco ATA 188 Release 2.16
March 28, 2003
These release notes describe newly incorporated features, changed features or changed behavior, resolved issues, and open issues for the Cisco ATA 186 and the Cisco ATA 188 for Release 2.16 (SIP and H.323 protocols).
Note
The term Cisco ATA refers to both the Cisco ATA 186 and the Cisco ATA 188.
Contents
These release notes provide the following information:
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Introduction to the Cisco ATA Analog Telephone Adaptor
The Cisco ATA is an analog telephone adaptor that allows regular analog telephones to operate on IP-based telephony networks. The Cisco ATA supports two voice ports, each with its own independent telephone number.
Two Cisco ATA products are available to Cisco customers—the Cisco ATA 186 and the Cisco ATA 188. Both products run the same software and have two voice ports. The difference between these products is that the Cisco ATA 186 has one RJ45 port that provides access to an Ethernet network, while the Cisco ATA 188 has an Ethernet switch and two RJ45 ports. The Cisco ATA 188 has one RJ45 port for access to an Ethernet network and a second RJ45 port for connecting a downstream Ethernet device such as a PC.
Downloading and Upgrading the Software
Before you can use the Cisco ATA Release 2.16, you must first download and upgrade the Cisco ATA software. You can download the software, after logging in, at:
http://www.cisco.com/cgi-bin/tablebuild.pl/ata186
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For more information about downloading and upgrading software, see the Cisco ATA administrator's guides for the signaling protocol you are using. The administrator's guides can be found at the following location:
http://www.cisco.com/univercd/cc/td/doc/product/voice/ata/ataadmn/index.htm
New Features in Release 2.16
This section contains information on new features for Cisco ATA Release 2.16:
General Features
This section contains information on new features for Cisco ATA Release 2.16 for both SIP and H.323:
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Local Tone Playout Reporting
The Cisco ATA inserts tone type IDs into its debug log.
To help analyze call flows, the tone locally played by the Cisco ATA to the FXS port is reported by means of the prserv debug log. Local tones are different from other tones because local tones are not carried within the inband audio. Instead, the Cisco ATA is prompted by a network event to play the tone, and the Cisco ATA generates the tone for the exclusive purpose of playing it to the attached telephone handset. For example, during a call between the Cisco ATA and a far-end phone, the far-end user might press a digit on the dial pad, thus sending an AVT Named Signaling Event to the Cisco ATA. This event prompts the Cisco ATA to generate a DTMF tone and to play the tone locally to the Cisco ATA phone.
Table 1 lists the tone type identifier and its description for local tone reporting.
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Real-Time Transfer Protocol (RTP) Statistics Reporting
To monitor the quality of service for the media stream, you can access RTP packet statistics of the two voice ports and their channels by opening the following page on the Cisco ATA Web server:
<Cisco ATA IP address>/rtps
The following RTP packet statistics are reported:
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Using the refresh feature on the RTP Statistics page, you can obtain updated, real-time RTP statistics during a call.
Resetting Cisco ATA counters
To reset the Cisco ATA counters, do the following:
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Using Voice Configuration Menu for Status Reporting Prior to Getting IP Connectivity
Using voice configuration menu code 3123#, you can obtain basic network status to use for diagnostic purposes. After you enter this code, the Cisco ATA announces a message in the following format:
e123.D.0xXwhere:
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Example
If the hexadecimal value provided by the voice configuration menu is 0x1d, the network status of the Cisco ATA is shown in Table 3.
Using Web Configuration Page for Status Reporting After Getting IP Connectivity
The Cisco ATA Stats Web page (http://<Cisco ATA IP address>/stats)displays the following information:
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where:
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D1, D2, D3 values are shown in number of seconds since 00:00:00 UTC, 1970-01-01. If no NTP response has been received from the NTP server, the values of D1, D2, and D3 are 0.
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Example
If the hexadecimal value provided by the web configuration menu is 0x1011, the network status of the Cisco ATA is shown in Table 5.
Pipelined DNS Query
In this release, the Cisco ATA performs a DNS query by first sending its request to DNS server number 1. Then, if DNS server number 1 does not respond to this request within one second, the Cisco ATA sends the same request to DNS server number 2. The Cisco ATA accepts the first response from either of the DNS servers, thereby reducing the time the Cisco ATA requires for name resolution if DNS server number 1 is down or not responding.
New Bit for DNS Name Resolution
The OpFlags parameter now uses a control bit (Bit 13, mask 0x2000) to allow DNS name resolution using both statically configured DNS IP addresses (by means of configuration parameters DNS1IP and DNS2IP) and DHCP server-supplied DNS IP addresses. Therefore, the Cisco ATA can query as many as four DNS IP addresses in one DNS query.
New CDP Discovery Implementation
CDP Discovery behavior is implemented as follows:
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New Features for SIP
The following list contains new SIP-specific features in Cisco ATA Release 2.16:
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The Cisco ATA now supports the SIP REFER method for call transfer. When the Cisco ATA initiates a call transfer, it sends a REFER request to the remote user agent. If the remote user agent does not support the method, a "501 Not Implemented" response should be returned to the Cisco ATA. The Cisco ATA then re-initiates the call transfer using the BYE/Also method.
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When the Cisco ATA sends a call to a PSTN phone number, the call goes through a PSTN gateway that is connected to the local telephone company's network.
The PSTN gateway usually responds with a "183 Session Progress" response, followed by a "200 OK" response when the called party answers.
When a PSTN gateway returns a "486 Busy Here" response after a "183 Session Progress" response, the callback-on-busy feature fails on the Cisco ATA. The ATA interprets a 183 response as the far end phone ringing and terminates the automatic retry when even though the far end may actually be busy.
You can configure FeatureTimer parameter bits 13-15 to specify the amount of time that the Cisco ATA waits for a "486 Busy Here" response after receiving a 183 response. This allows a short time period for a 486 response to arrive before the Cisco ATA assumes a successful connection and rings the phone.
FeatureTimer Bit Values
You can configure bits 13-15 to have the values of 0-8, where 0 (the default) means there is no delay before the Cisco ATA rings the phone, and values 1-7 represent the number of seconds for the ring delay.
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When a call arrives for a Cisco ATA port that is in use and has call-waiting enabled, the Cisco ATA plays a call-waiting tone. If the incoming call is not answered within a specified period of time, the Cisco ATA can reject the call by returning a "486 Busy" response to the remote user agent.
You can configure FeatureTimer parameter bits 16-18 to specify the ringing period for incoming call-waiting calls. Valid values for bits 16-18 are 0-7, where 0 (the default) means the call-waiting ring never times out, and values 1-7 represent the number of 10-second units before the call-waiting ring times out. For example, a configured value of 4 means that the timeout value is 40 seconds.
This feature can be disabled by either using the default value 0 or setting bits 16-18 to a value greater than the standard timeout for an incoming call as specified in SigTimer parameter bits 14-19. When this feature is disabled, a "480 Temporarily Not Available" response is returned to the remote user agent when the standard ring times out.
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Factory reset and local upgrade using the voice configuration menu can now be protected with the UI password. If the UI password (UIPassword parameter) is enabled, the Cisco ATA prompts the user for the password before a factory reset or upgrade is allowed.
Note
Use OpFlags parameter bits 28-31 to indicate whether factory reset and local upgrade options with the voice configuration menu are protected with the UI password.
OpFlags Configuration
To password-protect factory reset and local upgrade as previously described, you must configure OpFlags bits 28-31 with a value of 6, and the UIPassword parameter must be enabled.
Any value other than 6 for these bits means that this feature is disabled and the Cisco ATA will not prompt the user for the UIPassword.
The default value is 0.
New Features for H.323
There are no new H.323-specific features for Cisco ATA Release 2.16:
Changes in Release 2.15 for SIP and H.323
This section contains information on changed features for Release 2.16.ms for both the SIP and H.323 protocols:
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If Bits 7-0 are 0, the TOS bit value for audio packets defaults to 0xB8.
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If Bits 15-8 are 0, the TOS bit value for signaling packets defaults to 0x68.
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In Release 2.16, the name of the SIP sample configuration file is sip_example.txt; the name of the H.323 sample configuration file is h323_example.txt.
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Resolved Issues in Cisco ATA Release 2.16
This section lists the issues in previous releases of the Cisco ATA that are resolved in Release 2.16:
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Resolved SIP Issues
This section lists the issues in previous releases of the Cisco ATA that are resolved in Cisco ATA Release 2.16 for SIP only.
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Out-of-band DTMF does not always work between the Cisco ATA and Cisco IOS-based gateways.
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Ringing of the telephone handset may be delayed if the Cisco ATA performs a DNS query on the From header to prepare for the local call-return feature.
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When the combined length of record-route uniform resource identifiers (URIs) and contact-header URIs is more than 318 bytes, Cisco ATA behavior is abnormal.
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The Cisco ATA does not always send an acknowledgment (ACK) message after receiving a SIP proxy 5xx response to an INVITE message.
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A configurable option is needed for the Cisco ATA to include or exclude the port in a Refer-To header.
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The Cisco ATA does not parse the IP address in the SIP received=<ip-addr> parameter if the rport=<port> parameter directly follows the received= parameter.
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Configuring two DNS "A" records with the same domain name for the primary and secondary SIP proxy servers can cause problems for the Cisco ATA.
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When the gateway returns a 486 response to the Cisco ATA following a 183 response, the Cisco ATA callback-on-busy feature fails.
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Out-of-band DTMF data packets are sent with fixed duration and an incremental timestamp instead of a fixed timestamp and incremental duration. This can cause a remote media server to detect only the first digit in a series of digits.
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If the Cisco ATA sends an INVITE message that includes the user=phone parameter, the corresponding ACK message does not always contain the user=phone parameter.
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The Cisco ATA does not process the Expires parameter from the SIP proxy server.
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Sweden CallWaitTone does not play two beeps.
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The call-waiting tone cannot be played only one time.
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When the Contact header in the 200 OK response from the SIP proxy does not contain a User ID, the Route header in the Cisco ATA ACK message contains the Contact IP address with an empty User ID field.
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The PROTOS test-suite for SIP can cause the Cisco ATA to operate improperly, such as rebooting or hanging. Cisco recommends that customers with earlier software versions upgrade to this latest release.
Release 2.16 Build 030509a
The following list contains SIP issues that have been resolved for Build 030509a of the 2.16 release:
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The Cisco ATA Telephony Adapters running SIP are incorrectly building a "302 Moved Temporarily" message. When the Cisco ATA receives a NOTIFY message during an existing call flow, the Cisco ATA uses the session information from the NOTIFY instead of the original INVITE or 180 RINGING message.
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Each time after a call is placed or received, subsequent Cisco ATA REGISTER requests have the same Call-ID but a different From tag. The From tag should remain the same in subsequent registrations.
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Cisco ATAs that are configured to handle G.723 calls sometimes experience lost audio when an incoming call-waiting call arrives.
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The value of the From header in a SIP invite message changes after eight minutes of operation.
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The Cisco ATA, when acting as the callee, does not provide SIP-requested credentials. Instead, the Cisco ATA increments the CSeq counter and resubmits the request without providing credentials.
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The Cisco ATA incorrectly sends an ACK message that contains credentials to the SIP proxy even when the INVITE message did not contain credentials.
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The Cisco ATA does not retry the DNS SRV query after a failure.
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The Cisco ATA does not fail over to a second IP address returned by a DNS query.
Resolved H.323 Issues
This section lists the issues in previous releases of the Cisco ATA that are resolved in Cisco ATA Release 2.16 for H.323 only.
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The Cisco ATA 188 (version 2.15) does not mark H.323 signaling packets that are being sent to the Cisco Call Manager.
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Cisco ATA-to-Cisco ATA calls destined for the value of the UID1 parameter instead go to the UID0-configured value.
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Direct IP calling fails from the Cisco ATA Phone 1 port to the Cisco ATA Phone 2 port.
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One-way audio exists on calls made between a Cisco ATA running H.323 version 2.14 and a Cisco ATA running SCCP 2.15.ms or greater.
Release 2.16 Build 030509a
The following list contains H.323 issues that have been resolved for Build 030509a of the 2.16 release:
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The Cisco ATA188 stops answering VoIP calls after receiving invalid packets.
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The Cisco ATA188 resets after receiving invalid packets.
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The Q931 and H323 setup fields are not correctly modified in some instances.
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When the Cisco ATA receives a Setup message with the bearer cap set as "Unrestricted Digital Information," the Cisco ATA responds with a release-complete message that contains an incorrect cause information element.
In this build, Bit 16 of the ConnectMode parameter has been added to resolve this issue. If this bit is set to 1, the Cisco ATA respond with a release-complete message that contains 65 as the cause information element for a setup message that has unrestricted digital information bearer capability.
Resolved SIP and H.323 Issues
This section lists the protocol-generic issues in previous releases of the Cisco ATA that are resolved in Release 2.16 for both SIP and H.323.
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Duplexity mismatch occurs in Cisco Discovery Protocol (CDP) information.
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Standard G3 fax transmissions are failing because the echo canceller is disabled when it should remain enabled.
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G.711 frame size is fixed at 20 ms and cannot be reconfigured.
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The Reset and Refresh commands cannot be individually executed if web access is disabled.
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The Cisco ATA plays a garbled voice configuration menu prompt.
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The Cisco ATA does not allow caller ID to display on a phone that has two lines.
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The Cisco ATA 186, when running v2.15 ata186 (Build 020911b), permits the http://<ATA IPaddress>/reset command to take effect without requiring a username or password.
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Out-of-band DTMF RTP packets are not sent repeatedly for redundancy purposes, as with the Cisco AS5350.
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Special digits for restricted and unknown calls are not sent to a caller ID display device that supports DTMF signaling.
Open Issues in Cisco ATA Release 2.16
This section contains the following topics:
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Open Issues for SIP
There are no SIP-specific open issues in Cisco ATA Release 2.16.
Open Issues for H.323
There are no H.323-specific open issues in Cisco ATA Release 2.16.
Open Issues for SIP and H.323
There are no open issues for both SIP and H.323 in Cisco ATA Release 2.16.
Related Documentation
Use these release notes in conjunction with the documents located at this index:
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http://www.cisco.com/univercd/cc/td/doc/product/voice/ata/index.htm
Obtaining Documentation
The following sections explain how to obtain documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following URL:
Translated documentation is available at the following URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.
Ordering Documentation
You can order Cisco documentation in these ways:
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http://www.cisco.com/cgi-bin/order/order_root.pl
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http://www.cisco.com/go/subscription
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Documentation Feedback
You can submit comments electronically on Cisco.com. In the Cisco Documentation home page, click the Fax or Email option in the "Leave Feedback" section at the bottom of the page.
You can e-mail your comments to bug-doc@cisco.com.
You can submit your comments by mail by using the response card behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you with these tasks:
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If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Cisco TAC inquiries are categorized according to the urgency of the issue:
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The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to this URL:
All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
Posted: Wed Feb 22 00:07:51 PST 2006
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