Table Of Contents
Release Notes for the Cisco ATA 186 and Cisco ATA 188 Release 3.2 (1) for SIP
Updated November 20, 2008
These release notes describe enhancements and resolved issues for the Cisco ATA 186 and the Cisco ATA 188 for Release 3.2 (1) for the SIP protocol.
Refer also to the Release Notes for the Cisco ATA 186 and Cisco ATA 188 Release 3.2 for information about that release:
In addition, refer to the Cisco ATA administrator's guide for your protocol at the following location:
The term Cisco ATA refers to both the Cisco ATA 186 and the Cisco ATA 188.
These release notes provide the following information:
Introduction to the Cisco ATA Analog Telephone Adaptor
The Cisco ATA is an analog telephone adaptor that allows traditional 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 Cisco ATA 186 has one RJ45 port that provides access to an Ethernet network. The Cisco ATA 188 has an Ethernet switch and two RJ45 ports—one for accessing an Ethernet network and one for connecting a downstream Ethernet device such as a PC.
Downloading and Upgrading the Software
Before you can use the Cisco ATA Release 3.2 (1), you must first download and upgrade the Cisco ATA software. You can download the software, after logging in, at:
Note If you are using the Cisco ATA executable-file-upgrade method, check with the administrator of the TFTP server to make sure that the TFTP upgrade method is disabled. Otherwise, the Cisco ATA might downgrade to an old image via TFTP.
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:
Support Millisecond Resolution for RingOnOffTime
The Cisco ATA now offers milliseconds resolution for the ring ON and OFF time as specified in the RingOnOffTime parameter.
If ring ON or OFF time is greater than 100, the unit of time is in milliseconds. If the time is less than 100, the unit of time is in seconds.
For detailed information about the RingOnOffTime parameter, see the administrator's guide:
To specify a ring ON time of 0.75 seconds, ring OFF time of 7.5 seconds, and ring frequency of 25, the parameter value is 750,7500,25.
Newer Cisco ATA 186/188s offer power-denial on both FXS ports.
These newer models can be identified by a -A suffix in the product ID.
Polarity parameter bit 4 can be used to enable or disable power denial on both FXS ports. When the bit value is 0 (default), power denial is enabled. When the bit value is 1, power denial is disabled.
For more information about the Polarity parameter, see the administrator's guide:
Enhancement to Dial Plan 'N' Rule
This is an extension of the original dial plan 'N' rule that is described in the Cisco ATA 3.2 Release Notes at the following location.
The dial plan 'N' rule introduced in release 3.2 has been enhanced to apply to all outgoing numbers, including emergency numbers.
The enhanced dial plan 'N' rule syntax is as follows:NTn1+n2+n3+n4(tttt)
•T—The letter used to indicate the available options in applying the N-rule. These options are:
–A—Do not apply normalization and denormalization.
–B—Do not apply normalization; apply denormalization only.
–C—Apply normalization without adding the leading plus sign; do not apply denormalization.
–D—Apply normalization without adding the leading plus sign; apply denormalization also.
–E—Apply normalization and add the leading plus sign; do not apply denormalization.
–F—Apply normalization and add the leading plus sign; apply denormalization also.
•n1—The international prefix (IDD: International Direct Dialing).
•n2—The local country code number (CC: Country Code).
•n3—The national prefix (NDD: National Direct Dialing).
•n4—The local area code (NPA: Numbering Plan Area).
•tttt—The triggering subrule for normalization. This could be a subrule matching with or without the leading logical not (^).
The following examples assume a telephone number in San Jose, CA with an area code of 408.
This command applies normalization to outgoing numbers with a length not less than 6; also applies denormalization.
This command applies to outgoing numbers except these with length 3 or 5; also applies denormalization.
Resolved Issues for Release 3.2 (1)
Table 1 lists DDTS issues that have been resolved in Cisco ATA Release 3.2(1).
Table 1 Resolved Issue for Release 3.2 (1) for SIP
DDTS Number Summary
The Cisco ATA fails to send INVITE to backup proxy when the primary fails.
Display-name missing double quotes found in original SIP header URI.
No branch value in Via header in initial INVITE after fail-over.
The N-rule will apply to all outgoing numbers. This is an enhancement to the existing N-rule. For more information, see the "Enhancement to Dial Plan 'N' Rule" section.
Refer-To URI is incorrect.
No ring on first incoming call after performing an attended transfer.
Missing Contact header in NOTIFY request.
Setting Toll Control with PIN does not work.
INVITE with lower CSeq is sent for the same call leg after failover.
501 response sent to NOTIFY resulting in call transfer failure.
The Cisco ATA should resubmit INVITE with correct SIP BRANCH value.
The Cisco ATA complies to draft-ietf-sip-session-timer-8 for compatibility with BTS.
Issues occur with the processing of DNS packets.
423 response with Min-Expires value > 3600 is ignored.
Retransmitted INVITE to backup proxy has Cseq 0.
The Cisco ATA is unable to set the UI password.
Cisco ATA186 issue in which the symbol % appears in the SIP Via header branch parameter.
Factory reset does not change some configuration parameters to default values.
Inaccessible DNS servers cause the Cisco ATA to perform an invalid DNS query.
Record-Route in 18x response is not processed.
Cisco ATA Semi-Attended Transfer behavior undesirable.
Note For this fix to take effect, you must use the latest 3.2(1) default CallCmd value that is shown in the file sip_example.txt.
For correct SDP answer, the 1xx response must be sent reliably.
Web interface displays raw text instead of HTML.
Record-Routes in INVITE are not copied into 1xx responses.
The Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SIP) (2.15, Rev B0) contains inaccurate information about how to save a factory reset. The following updated procedure provides the correct information.
Resetting the Cisco ATA to Factory Default Values
It is possible that you may, under some circumstances, want to reset the Cisco ATA to its factory default values. For example, this is the only way to recover a forgotten password without contacting your Cisco representative.
To perform a factory reset, you must use the voice configuration menu and follow these steps:
Step 1 Press the function button on the Cisco ATA.
Step 2 Press the digits 322873738 (FACTRESET) then press # on your telephone keypad.
Step 3 Press * on your telephone keypad to confirm that you want to reset the Cisco ATA, then hang up the phone.
Use these release notes in conjunction with the documents located at this index:
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Obtaining Technical Assistance
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Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool automatically provides recommended solutions. If your issue is not resolved using the recommended resources, your service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
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