Table Of Contents
Release Notes for the Cisco ATA 186 and Cisco ATA 188 Release 3.1
Feb 10, 2004
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 3.1 (SIP, H.323, SCCP, and MGCP protocols).
Note 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 3.1, 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:
New Features for Release 3.1
Table 1 lists new features for Cisco ATA Release 3.1, and includes the protocol(s) for which the feature applies.
Resolved Issues for Release 3.1
This section lists the issues in previous releases of the Cisco ATA that are resolved for Release 3.1:
Resolved Non-Protocol-Specific Issues
Table 2 lists the issues in previous releases of the Cisco ATA that are resolved for Cisco ATA Release 3.1 for all four supported protocols (SIP, H.323, SCCP and MGCP).
Resolved SIP Issues
Table 3 lists the issues in previous releases of the Cisco ATA that are resolved for Cisco ATA Release 3.1 for SIP only.
Resolved SCCP Issues
Table 4 lists the issues in previous releases of the Cisco ATA that are resolved for Cisco ATA Release 3.1 for SCCP only.
Table 4 Resolved Issues for SCCP Protocol
DDTS Number Summary
The Cisco ATA cannot handle zero-length TCP messages.
Resolved H.323 Issues
Table 5 lists the issues in previous releases of the Cisco ATA that are resolved for Cisco ATA Release 3.1 for H.323 only.
Table 5 Resolved Issues for H.323 Protocol
DDTS Number Summary
The Cisco ATA does not use symmetric Tx/Rx codecs.
Use these release notes in conjunction with the documents located at this index:
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•Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
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
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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:
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.
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