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September 14, 2000
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Note You can find the most current Cisco IOS documentation on Cisco Connection Online (CCO). These electronic documents may contain updates and modifications made after the hardcopy documents were printed. |
These release notes for the Catalyst 4000 Access Gateway module describe the enhancements provided in Cisco IOS Release 12.1(3)XI1. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.1(3)XI1, see the "Caveats" section and Caveats for Cisco IOS Release 12.1 T . The caveats document is updated for every maintenance release and is also located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release located on CCO and the Documentation CD-ROM.
These release notes describe the following topics:
The Cisco Catalyst 4000 Access Gateway module adds voice interfaces, WAN interfaces and DSP farm services to the Cisco Catalyst 4000 family switch and enables it to become an integrated voice and data solution for branch and remote offices and small to medium businesses that support from 50 to 240 users. The module provides the following interfaces:
The Cisco Catalyst 4000 Access Gateway Module supports H.323 for the telephony gateway functions and the Skinny Client Control Protocol (SCCP) for the DSP farm services. The modules operates as a peer device in Voice over IP (VoIP) applications or as a slave device under the control of Cisco Call Manager in the Cisco AVVID IP Telephony environment.
This section describes the system requirements for Release 12.1(3)XI1:
Table 1 describes the minimum memory recommendations for the Access Gateway module.
| Platforms | Image Name | Software Image | Flash Memory Recommended | DRAM Memory Recommended | Runs From |
|---|---|---|---|---|---|
c4gwy | IOS IP/Firewall | c4gwy-io3s-mz | 32 MB, fixed | 64 MB | RAM |
c4gwy | IOS IP/Firewall/Voice | c4gwy-io3sx3-mz | 32 MB | 64 MB | RAM |
Cisco IOS Release 12.1(3)XI1 supports the Catalyst 4000 Access Gateway module.
To determine the version of Cisco IOS software running on an Access Gateway module, log in to the device and enter the show version EXEC command:
router> show version Cisco Internetwork Operating System Software IOS (tm) c4gwy Software (c4gwy-io3s-mz), Version 12.1(3)XI1, RELEASE SOFTWARE
For general information about upgrading to a new software release, see Upgrading the Cisco IOS Software Release in Cisco Routers and Modems located at:
http://www.cisco.com/warp/public/620/6.html
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.
Cisco IOS Release 12.1(3)XI1 supports the same feature sets as Cisco IOS Release 12.1, but Cisco IOS Release 12.1(3)XI1 can include new features supported by the Access Gateway module.
Table 2 describes the supported feature sets.
| Feature Sets | Feature Set Matrix Term | Software Image | Platforms | |
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| IP Standard Feature Sets | IP/FW |
| c4gwy-io3s-mz | Catalyst 4000 Access Gateway module |
IP/FW/Voice |
| c4gwy-io3sx3-mz | Catalyst 4000 Access Gateway module |
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Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, you must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com. |
The following sections list the new hardware and software features Cisco IOS Release 12.1(3)XI1.
Cisco IOS Release 12.1(3)XI1 supports the Cisco Catalyst 4000 Access Gateway module.
There are two new software features supported by the Catalyst 4000 Access Gateway module for Cisco IOS Release 12.1(3)XI1. Under the control of Cisco CallManager, the Access Gateway module can support conferencing and transcoding services.
The conferencing service allows an external Cisco CallManager to use the DSP farm to mix participants into multiple conferences. The conferencing service adds G.711 voice streams to form unicast conferences.
The Cisco CallManager controls the conference with Skinny Client Control Protocol (SCCP).
The conferencing service supports:
The transcoding service allows an external Cisco CallManager to use the DSP farm to compress or decompress WAN packets of voice streams between G.723.1 or G.729a to or from G.711. G.711 is the uncompressed format for LANs.
The transcoding service supports:
The following sections contain important notes about Cisco IOS Release 12.1(3)XI1 that can apply to the Catalyst 4000 Access Gateway module.
You must tighten the screws on the VICs and WICs mounted on the Access Gateway module. If the screws are not properly tightened, the VIC or WIC may malfunction.
The TDM clock reference on the Access Gateway module can be derived from one of seven sources. These are the free running on-board clock and two recovered clock sources from each VIC slot that contains an E1/T1 card.
The default reference is the on-board clock. The frame-clock-select command can be used to select one of the E1/T1 ports as the primary reference. This command can also be used to select up to 3 prioritized backups that can be used if the primary clock fails. Switch over to a backup source is non-revertive, the system does not switch back to a higher priority clock if it recovers after a failure.
The command has the following syntax:
[no] frame-clock-select priority E1/T1 slot/port
The clock source with priority 1 is the primary reference and the clock with priority 4 is the lowest priority backup.
The clock reference selection using the frame-clock-select command is independent of the clock selection between line or internal on an E1/T1 controller. Framing and CRC errors due to clock slips may be observed on E1/T1 interfaces if the on-board clock is used as the reference.
The 8260 Rev1A device, which is being used in the Access Gateway module hardware, has a defect that can cause data corruption when configuring the MCC SI Ram for 2 entries (7 bits forming the 56kbps channel and 1 bit being discarded).
As a workaround, 3 SI RAM entries would have to be used, but the Access Gateway module does not have enough room available. Therefore, only 64kbps channels will be supported on the Access Gateway module.
If absolutely required, we could implement this feature in Access Gateway module slots 1 and 2 using the SCCs and limit it to 2 channels or super-channels per Access Gateway module slot. This requires more design work and will not be addressed unless really needed.
Customers that need 56kbps should use the WIC-56K4 WIC.
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.
This section contains only open and resolved caveats for this current Cisco IOS maintenance release.
All caveats in Cisco IOS Release 12.1(3) and Cisco IOS Release 12.1(3)T are in Cisco IOS Release 12.1(3)XI1.
For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1 , which lists severity 1 and 2 caveats and is located on CCO and the Documentation CD-ROM.
Gateway(config-controller)#ds0-group 0 time 1 type ? e&m-delay-dial E & M Delay Dial e&m-immediate-start E & M Immediate Start e&m-wink-start E & M Wink Start ext-sig External Signaling fxo-ground-start FXO Ground Start fxo-loop-start FXO Loop Start fxs-loop-start FXS Loop Start
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Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, Login to CCO and click Software Center: Cisco IOS Software: Cisco Bug Navigator II. You can also find Bug Navigator II at: http://www.cisco.com/support/bugtools |
The following sections describe the documentation available for the Cisco Catalyst 4000 family switches. 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 CCO and the Documentation CD-ROM.
Use these release notes with these documents:
The following documents are specific to or support Cisco IOS Release 12.1(3)XI1 and are located on CCO and the Documentation CD-ROM:
These documents are available for the Cisco Catalyst 4000 family switches on CCO and the Documentation CD-ROM:
On CCO at:
Technical Documents: Documentation Home Page: Multilayer LAN Switches: Cisco 4000 Family Switches
On the Documentation CD-ROM at:
Cisco Product Documentation: Multilayer LAN Switches: Cisco 4000 Family Switches
Feature modules describe new features supported by Cisco IOS Release 12.1 T, and are updates to the Cisco IOS documentation set. A feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the feature modules are available online only. Feature module information is incorporated in the next printing of the Cisco IOS documentation set.
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in Release 12.1T
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in Release 12.1T
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are shipped with your order in electronic form on the Documentation CD-ROM—unless you specifically ordered the printed versions.
Each module in the Cisco IOS documentation set consists of two books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.
On CCO and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1: Configuration Guides and Command References
Table 3 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form upon request.
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Note You can find the most current Cisco IOS documentation on CCO and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed. |
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1
| Books | Major Topics |
|---|---|
| Configuration Fundamentals Overview |
| Preparing for Dial Access |
| Interface Configuration Overview |
| IP Addressing and Services |
| Multiservice Applications Overview |
| Quality of Service Overview |
| Security Overview |
| Cisco IOS Switching Services Overview |
| Wide-Area Networking Overview |
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You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.
Nonregistered CCO users can order documentation through a local account representative by calling Cisco's corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).
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You can access CCO in the following ways:
You can e-mail questions about using CCO to cco-team@cisco.com.
The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.
To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.
To contact by e-mail, use one of the following:
Language | E-mail Address |
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In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
If you have a CCO login account, you can access the following URL, which contains links and tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/technotes/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your Web browser to CCO and click on this path: Technical Assistance Center: Technical Tips. (You must have a CCO account to access this link.)
The following sections are provided from the Technical Tips page:
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address:
Cisco Systems, Inc.
Document Resource Connection
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San Jose, CA 95134-9883
We appreciate and value your comments
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Posted: Thu Sep 14 18:11:24 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.