Table Of Contents
Release Notes for the Cisco 1700 Series Routers for Cisco IOS Release 12.2(11)YT2
March 3, 2003
These release notes describe new features and significant software components for the Cisco 1700 series routers that support Cisco IOS Release 12.2 T, up to and including Cisco IOS Release 12.2(11)YT2. These release notes are updated as needed to describe new memory requirements, new features, new hardware support, software platform deferrals, microcode or modem code changes, related document changes, open and resolved caveats, and any other important changes. Use these release notes with the Cross-Platform Release Notes for Cisco IOS Release 12.2 T located on Cisco.com.
For a list of the software caveats that apply to Cisco IOS Release 12.2(11)YT2, refer to the "Caveats" section of this document and to the online Caveats for Cisco IOS Release 12.2 T document. The caveats document is updated for every 12.2 T maintenance release and is located on Cisco.com and the Documentation CD.
Note Cisco IOS Release 12.2(11)YT2 is an early deployment release and does not fully support all the features of the Cisco 1700 series routers. For more information, see the "Features Not Supported in Cisco IOS Release 12.2(11)YT2" section.
These release notes discuss the following topics
This section describes the system requirements for Release 12.2(11)YT2 and includes the following sections:
This section describes the memory requirements for the Cisco IOS feature set supported by Cisco IOS Release 12.2(11)YT2 on the Cisco 1700 series routers.
Table 1 Recommended Memory for the Cisco 1700 Series Routers
Platform Image Name Feature Set Image Flash Memory DRAM Memory
Cisco 1751 and Cisco 1760
Cisco 1700 IOS IP ADSL/VOX Plus
IP Plus ADSL/VOX
Cisco IOS Release 12.2(11)YT2 supports the following Cisco 1700 series routers:
•Cisco 1751 and 1751-V Routers
•Cisco 1760 and 1760-V Routers
The Cisco 1751, 1751-V, 1760, and 1760-V routers run data or data-and-voice images, providing digital and analog voice support.
For detailed descriptions of new hardware features and which features are supported on each router, see the "New and Changed Information" section. For descriptions of existing hardware features and supported modules, see the hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 1700 series routers, which are available on Cisco.com at the following location:
Determining the Software Version
To determine the version of Cisco IOS software currently running on your Cisco 1700 series router, log in to the router and enter the show version EXEC command. The following sample output from the show version command indicates the version number on the second output line:router> show versionCisco Internetwork Operating System SoftwareIOS (tm) C1700 Software (C1700-Y-MZ), Version 12.2(11)YT2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)Synched to technology version 12.2(5.4)T
Upgrading to a New Software Release
For general information about upgrading to a new software release, see Software Installation and Upgrade Procedures located at: http://www.cisco.com/pcgi-bin/Support/browse/index.pl?i=Hardware%20Products&f=505
Feature Set Tables
The Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Each feature set contains a specific set of Cisco IOS features. Release 12.2(11)YT2 supports the same feature sets as Cisco IOS Releases 12.2 and Cisco IOS Release 12.2(11)T, but Cisco IOS Release 12.2(11)YT2 includes new fixes or features supported by the Cisco 1700 series routers.
Table 2 lists the features and feature sets supported in Cisco IOS Release 12.2(11)YT2.
The table uses the following conventions:
•Yes—The feature is supported in the software image.
•No—The feature is not supported in the software image.
•Introduced—The number in the "Introduced" column indicates the Cisco IOS release in which the feature was introduced. For example, "12.2(11)YT2" means the feature was introduced in Cisco IOS 12.2(11)YT2. If a cell in this column is empty, the feature was included in a previous release or the initial base release.
Note These feature set tables only contain a selected list of features, which are cumulative for Release 12.2(11)nn early deployment releases only (nn identifies each early deployment release). The tables do not list all features in each image—additional features are listed in the Cross-Platform Release Notes for Cisco IOS Release 12.2 T and Release 12.2 T Cisco IOS documentation.
Table 2 Feature List by Feature Set for Cisco 1751 and 1760 Routers
Feature Introduced Feature Set IP Plus ADSL/VOX
Cisco IOS Telephony Service (ITS) Version 2.1
Cisco Survivable Remote Site Telephony (SRST) Version 2.1
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 1700 series routers for Cisco IOS Release 12.2(11)YT2.
Note Because it is a maintenance release, there are no new software features for Cisco IOS Release 12.2(11)YT2.
New Software Features in Release 12.2(11)YT2
The following sections describe the new software features supported by the Cisco 1700 series routers for Cisco IOS Release 12.2(11)YT2.
For additional information on these features and their configurations, refer to Cisco IOS Telephony Feature Enhancements for Cisco IOS Release 12.2(11)YT at:
Cisco IOS Telephony Service Version 2.1
Cisco IOS Telephony Service (ITS) offers an entry-level IP telephony solution integrated directly into Cisco IOS. Customers can now deploy voice, data and IP telephony on a single platform for their small offices. ITS offers a core set of phone features that customers commonly require for their everyday business needs, and leverages the wide array of voice capabilities that are available in Cisco IOS to provide a very robust IP telephony offering for the small office environment.
Cisco ITS version 2.1 provides support for the following new features: additional languages, phone loads for Cisco CallManager 3.1 and above, GUI customization capability, Live Feed Music on Hold (MoH), H450.2 and H450.3 support in Cisco IOS, Consultative Transfer, and Hookflash Transfer.
Cisco Survivable Remote Site Telephony Version 2.1
The Cisco Survivable Remote Site Telephony (SRST) feature offers enterprises a reliable mechanism for providing continuous IP telephony services to small branch offices in the event of an outage. SRST enables enterprises to build large IP telephony networks using centralized call processing resources.
SRST Version 2.1 provides support for additional languages and for the Cisco IP Phone Extension Module 7914.
New Software Features in Cisco IOS Release 12.2T
For information regarding the features supported in Cisco IOS Release 12.2 T, refer to the Cross-Platform Release Notes and New Feature Documentation links at the following location on Cisco.com:
This section describes the limitations and features that are not supported on the the Cisco 1700 series routers in Cisco IOS Release 12.2(11)YT2.
Features Not Supported in Cisco IOS Release 12.2(11)YT2
Cisco IOS Release 12.2(11)YT2 is a maintenance release based on Cisco IOS Release 12.2(11)YT . Cisco IOS Release 12.2(11)TY was an early deployment release that provided support for the Cisco ITS Version 2.1 and Cisco SRST Version 2.1. Release 12.2(11)YT2 does not include support for features that are supported on the Cisco 1700 series routers in the following Cisco IOS releases:
•Cisco IOS Release 12.2(4)XL
•Cisco IOS Release 12.2(4)XM
•Cisco IOS Release 12.2(4)YA
•Cisco IOS Release 12.2(2)YB
•Cisco IOS Release 12.2(4)YH
•Cisco IOS Release 12.2(8)YJ
•Cisco IOS Release 12.2(8)YL
•Cisco IOS Release 12.2(8)YM
•Cisco IOS Release 12.2(8)YN
Features that are not supported in Cisco IOS Release 12.2(11)YT2 include the following:
•T1/E1 multiflex voice and WAN interface cards (VWICs)
•4-port FXS/DID voice interface card (VIC)
•Easy Virtual Private Network (VPN) server and some Quality of Service (QoS) features on xDSL interfaces
Live Feed MoH
Only one Live Feed MoH is supported per system.
Live feed MoH on an FXS voice port is not a realistic option.
Speed-Dial Directory Capacity
A maximum of 32 entries is allowed in the "speeddial.xml" file.
The following sections contain important notes about Cisco IOS Release 12.2(11)YT2 that can apply to the Cisco 1700 series routers. (Also, see the "Caveats" section.)
Fan Operation in Cisco 1700 Series Routers
Cisco 1760 and 1760-V router fans are always on, and Cisco 1710 routers do not contain a fan. However, the fans in Cisco 1720, 1721, 1750, and 1751 routers stay off until thermally activated.
Flash defaults to Flash:1 on Multipartition Flash
When using a multipartition flash card, the various flash partitions are referred to as "flash:1:", "flash:2:", etc. If you specify only "flash" in a multipartition flash, the parser assumes "flash:1:." For example, if you enter the show flash all command the parser defaults to "show flash:1: all" and only the flash information for the first partition displays. To see information for all flash partitions, enter the show flash ? command. This will list all of the valid partitions. Then enter the show flash:xx: all command on each valid partition.
Peak Cell Rate and Sustainable Cell Rate Values
On Cisco 1700 routers, specify the Peak Cell Rate (PCR) and Sustainable Cell Rate (SCR) as multiples of 32 Kbps. Other rates are treated as the next lower value of a multiple of 32. For example, an entered PCR value of 150 is considered 128.
Using the boot flash Command
Booting a Cisco 1700 series router with the boot flash command or the boot system flash command results in unpredictable behavior. To work around this problem, be sure to enter a colon (:) following both commands (for example, boot flash: or boot system flash:).
Using Dialer Interface with MLPPPoATM
This feature is not supported on the Cisco 1700 series platforms. Please use the Virtual Template interface instead.
Caveats describe unexpected behavior or defects in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels.
Caveats in Cisco IOS Release 12.2 T are also in Cisco IOS Release 12.2(11)YT2. For information on caveats in Cisco IOS Release 12.2 T, refer to the Caveats for Cisco IOS Release 12.2 T document. For information on caveats in Cisco IOS Release 12.2, refer to the Caveats for Cisco IOS Release 12.2 document. These documents list severity 1 and 2 caveats and are located on Cisco.com.
Note If you have an account with Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in to Cisco.com and click Service & Support: Technical Assistance Center: Tool Index: Bug Toolkit. Another option is to go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
Open Caveats—Cisco IOS Release 12.2(11)YT2
There are no open caveats specific to Cisco IOS Release 12.2(11)YT2 that require documentation in the release notes.
Resolved Caveats—Cisco IOS Release 12.2(11)YT2
All the caveats listed in this section are resolved in Cisco IOS Release 12.2(11)YT2. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
Open Caveats—Cisco IOS Release 12.2(11)YT1
There are no open caveats specific to Cisco IOS Release 12.2(11)YT1 that require documentation in the release notes.
Resolved Caveats—Cisco IOS Release 12.2(11)YT1
All the caveats listed in this section are resolved in Cisco IOS Release 12.2(11)YT1. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
Open Caveats—Cisco IOS Release 12.2(11)YT
This section documents possible unexpected behavior by Cisco IOS Release 12.2(11)YT and describes only severity 1 and 2 caveats and select severity 3 caveats.
CSCdz05919—A transferred call may not be forwarded again.
Conditions: An IP phone on a voice over IP (VoIP) gateway has call forwarding configured, but the call-forward pattern is not set or it doesn't match the forwarding number. The incoming call to the local IP phone is a transferred call, the call forwarding initiated by the phone is failed.
Workaround: Correctly set the call-forward pattern under telephony-service on the local gateway so that the pattern matches the forwarding number.
Resolved Caveats—Cisco IOS Release 12.2(11) YT
Because Cisco IOS Release 12.2(11) YT is the initial base release, there are no resolved caveats.
The following sections describe the documentation available for the Cisco 1700 series routers. Typically, these documents consist of hardware and software installation guides, Cisco IOS configuration and command references, system error messages, feature modules, and other documents. Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on Cisco.com and the Documentation CD.
Use these release notes with the documents listed in the following sections:
The following documents are specific to Release 12.2 and apply to Release 12.2(11)YT2. They are located on Cisco.com:
•To reach the Cross-Platform Release Notes for Cisco IOS Release 12.2 T, click this path:
•To reach product bulletins, field notices, and other release-specific documents, click this path:
•To reach the Caveats for Cisco IOS Release 12.2 and Caveats for Cisco IOS Release 12.2 T documents, which contain caveats applicable to all platforms for all maintenance releases of Release 12.2, click the following paths:
Note If you have an account with Cisco.com, you can also use the Bug Toolkit to find select caveats of any severity. To reach the Bug Toolkit, log in toCisco.com and click Service & Support: Technical Assistance Center: Tool Index: Bug Toolkit. Another option is to go to http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl.
Hardware installation guides, configuration and command reference guides, and additional documents specific to Cisco 1700 series routers are available on Cisco.com at the following location:
These sections explain how to obtain documentation from Cisco Systems.
World Wide Web
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Translated documentation is available at this URL:
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.
You can order Cisco documentation in these ways:
•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:
•Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:
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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.
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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:
•Streamline business processes and improve productivity
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•Order Cisco learning materials and merchandise
•Register for online skill assessment, training, and certification programs
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:
•Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.
•Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
•Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
•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
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:
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.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
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.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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