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Table Of Contents
Release Notes for the Cisco MC3810 for Cisco IOS Release 12.0(3)XG
Determining Your Cisco IOS Software Release
Upgrading to a New Software Release
New Features in Release 12.0(3)XG
ISDN BRI Voice on the Cisco MC3810
Voice over Frame Relay Using FRF.11 and FRF.12
Using the Cisco MC3810 with the PSTN
Cisco IOS Software Document Set
Cisco IOS Release 12.0 Documentation Set
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for the Cisco MC3810 for Cisco IOS Release 12.0(3)XG
March 29, 1999
These release notes describe new features and significant software components that support Cisco IOS Release 12.0(3)XG for the Cisco MC3810 multiservice access concentrator. Cisco IOS Release 12.0(3)XG is based on Cisco IOS Release 12.0(3)T.
Use these release notes with the cross-platform Release Notes for Cisco IOS Release 12.0 located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
For a list of software caveats that apply to Release 12.0(3)XG, refer to the "Caveats" section.
Contents
Introduction
As part of an enterprise backbone or as customer premises equipment (CPE) to service provider-managed network services, the Cisco MC3810 multiservice access concentrator reduces operating costs and complexity, and increases network throughput and performance. Cisco IOS software fully supports the Cisco MC3810 for multiprotocol routing, bridging, and Systems Network Architecture (SNA).
To make file management easier, the Cisco MC3810 provides a complete file system for software images, message files, and reports. The standard Flash memory size is 8 MB, and a 16-MB upgrade option can simultaneously hold two code images for fail-safe upgrades.
You can manage the Cisco MC3810 by using standard Cisco management platforms and facilities such as CiscoView and the native remote log-in facilities provided by Telnet and rlogin. Three types of configuration interfaces are provided:
•
Cisco CLI
•
•
The HTTP-based interface allows configuration from any Web browser such as Netscape Navigator or Microsoft Explorer. The SNMP MIB allows management of the Cisco MC3810 from SNMP managers, such as HP OpenView.
System Requirements
•
•
Memory Requirements
Table 1 Memory Requirements for the Cisco MC3810
IP
mc3810-i-mz
4 MB1
16 MB
RAM
IP Plus
mc3810-is-mz
8 MB
32 MB
RAM
IP/ATM Plus
mc3810-a2is-mz
8 MB
32 MB
RAM
Enterprise Plus
mc3810-js-mz
8 MB
32 MB
RAM
Enterprise/ATM Plus
mc3810-a2js-mz
8 MB
32 MB
RAM
1 Required flash memory for the IP feature set: The standard configuration includes 8 MB of flash memory.
Hardware Supported
Cisco IOS Release 12.0(3)XG supports the Cisco MC3810 multiservice access concentrator.
Determining Your Cisco IOS Software Release
To determine the version of Cisco IOS software currently running on a Cisco 2600 series router, log in to the router and enter the show version EXEC command. See the following sample output from the show version command. The version number is indicated on the second line as shown below:
Cisco Internetwork Operating System Software IOS (tm) MC3810 Software (mc3810-js-mz), Version 12.0(3)XG, RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, refer to the Cisco IOS Software Release 11.3 Upgrade Paths and Packaging Simplification (#703: 12/97) product bulletin located on CCO.
From the CCO home page, click on this path:
Service & Support: Product Bulletins: Software
Under Cisco IOS 11.3, click on Cisco IOS Software Release 11.3 Upgrade Paths (#703: 12/97).
This product bulletin does not contain information specific to Cisco IOS Release 12.0(3)XG but provides general upgrade information that may apply to Cisco IOS Release 12.0(3)XG.
Feature Set Table
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.
lists the features and feature sets supported by the Cisco MC3810 in Cisco IOS Release 12.0(3)XG and uses the following conventions:
•
•
Note
Table 3 Feature List by Feature Set for the Cisco MC3810
Frame Relay-ATM Interworking (FRF.5)
No
No
Yes
No
Yes
PPP Over ATM
No
No
Yes
No
Yes
RFC 1483
No
No
Yes
No
Yes
rtVBR, nrtVBR, CBR, UBR
No
No
Yes
No
Yes
Structured CES1
No
No
Yes
No
Yes
Traffic Shaping
No
No
Yes
No
Yes
UNI 3.12
No
No
Yes
No
Yes
APPN
No
No
No
No
No
APPN High-Performance Routing
No
No
No
No
No
APPN MIB Enhancements
No
No
No
No
No
APPN over Ethernet LAN Emulation
No
No
No
No
No
APPN Scalability Enhancements
No
No
No
No
No
BAN for SNA Frame Relay Support
No
Yes
Yes
Yes
Yes
Bisync
No
Yes
Yes
Yes
Yes
Bridging-Code Rework
No
No
No
No
No
Caching and Filtering
Yes
Yes
Yes
Yes
Yes
DLSw+
No
Yes
Yes
Yes
Yes
DLSw (RFC 1795)
No
Yes
Yes
Yes
Yes
DLSw+ Enhanced Load Balancing
No
Yes
Yes
Yes
Yes
DLSw+ Peer Clusters
No
Yes
Yes
Yes
Yes
DLSw Version 2 (RFC 1266)
No
Yes
Yes
Yes
Yes
DLSw+ RSVP Bandwidth Reservation
No
Yes
Yes
Yes
Yes
Downstream PU Concentration (DSPU)
No
Yes
Yes
Yes
Yes
Frame Relay SNA Support
(RFC 1490)No
Yes
Yes
Yes
Yes
NCIA
No
Yes
Yes
Yes
Yes
NetView Native Service Point
No
Yes
Yes
Yes
Yes
Polled Async
No
Yes
Yes
Yes
Yes
QLLC
No
Yes
Yes
Yes
Yes
Response Time Reporter
No
Yes
Yes
Yes
Yes
RIF Passthru in DLSw+
No
Yes
Yes
Yes
Yes
SDLC Integration
No
Yes
Yes
Yes
Yes
SDLC Transport (STUN)
No
Yes
Yes
Yes
Yes
SDLC-to-LAN Conversion (SDLLC)
No
Yes
Yes
Yes
Yes
SNA and NetBIOS WAN Optimization
No
Yes
Yes
Yes
Yes
SRB/RSRB
No
Yes
Yes
Yes
Yes
SRT
No
No
No
No
No
SRTLB
No
Yes
Yes
Yes
Yes
TG/COS
No
No
No
No
No
TN3270
No
No
No
Yes
Yes
TN3270 LU Nailing
No
Yes
Yes
No
No
TN3270 Server Enhancements
No
Yes
Yes
No
No
BGP
Yes
Yes
Yes
Yes
Yes
BGP4
Yes
Yes
Yes
Yes
Yes
EGP
Yes
Yes
Yes
Yes
Yes
Enhanced IGRP
Yes
Yes
Yes
Yes
Yes
Enhanced IGRP Optimizations
Yes
Yes
Yes
Yes
Yes
ES-IS
No
No
No
Yes
Yes
GRE VPN
No
No
No
Yes
Yes
IGRP
Yes
Yes
Yes
Yes
Yes
IS-IS
No
No
No
Yes
Yes
Named IP Access Control List
Yes
Yes
Yes
Yes
Yes
Network Address Translation (NAT)
Yes
Yes
Yes
Yes
Yes
NHRP
Yes
Yes
Yes
Yes
Yes
On Demand Routing
Yes
Yes
Yes
Yes
Yes
OSPF
Yes
Yes
Yes
Yes
Yes
OSPF Not-So-Stubby-Areas (NSSA)
Yes
Yes
Yes
Yes
Yes
OSPF On Demand Circuit (RFC 1793)
Yes
Yes
Yes
Yes
Yes
Protocol-Independent Multicast (PIM)
Yes
Yes
Yes
Yes
Yes
PIM Version 2
Yes
Yes
Yes
Yes
Yes
Policy-Based Routing
Yes
Yes
Yes
Yes
Yes
RIP
Yes
Yes
Yes
Yes
Yes
RIP Version 2
Yes
Yes
Yes
Yes
Yes
Apollo Domain
No
No
No
Yes
Yes
AppleTalk Phase 2
No
No
No
Yes
Yes
Banyan VINES
No
No
No
Yes
Yes
Concurrent Routing and Bridging
Yes
Yes
Yes
Yes
Yes
DECnet IV
No
No
No
Yes
Yes
DECnet V
No
No
No
Yes
Yes
GRE
No
No
No
Yes
Yes
Integrated Routing and Bridging (IRB)
Yes
Yes
Yes
Yes
Yes
IP
Yes
Yes
Yes
Yes
Yes
LAN Extension Host
No
No
No
No
No
Multiring
No
No
No
No
No
Novell IPX
No
No
No
Yes
Yes
OSI
No
No
No
Yes
Yes
Source-Route Bridging
Yes
Yes
Yes
Yes
Yes
Transparent and Translational Bridging
Yes
Yes
Yes
Yes
Yes
VLANs (ISL & IEEE 802.10)
No
No
No
Yes
Yes
XNS
No
No
No
Yes
Yes
AutoInstall
Yes
Yes
Yes
Yes
Yes
Automatic Modem Configuration
Yes
Yes
Yes
Yes
Yes
HTTP Server
Yes
Yes
Yes
Yes
Yes
Cisco IOS File System
Yes
Yes
Yes
Yes
Yes
Response Time Reporter Enhancements
Yes
Yes
Yes
Yes
Yes
RMON Events and Alarms
No
No
No
No
No
RMON Full
No
No
No
No
No
SNMP version 3
Yes
Yes
Yes
Yes
Yes
SNMP Inform Request
Yes
Yes
Yes
Yes
Yes
Telnet
Yes
Yes
Yes
Yes
Yes
VPDN MIB Feature
Yes
Yes
Yes
Yes
Yes
Application Specific Routing
No
No
No
No
No
Generic Traffic Shaping
Yes
Yes
Yes
Yes
Yes
H.323 Gatekeeper and Proxy
No
No
No
No
No
H.323 Hot Standby Routing Protocol (HSRP)
No
No
No
No
No
Multimedia Conference Manager
No
No
No
No
No
Process MIB
Yes
Yes
Yes
Yes
Yes
Random Early Detection (RED)
Yes
Yes
Yes
Yes
Yes
Response Time Reporter Enhancements
Yes
Yes
Yes
Yes
Yes
RSVP
Yes
Yes
Yes
Yes
Yes
AURP
No
No
No
Yes
Yes
IPX RIP
No
No
No
Yes
Yes
NLSP
No
No
No
Yes
Yes
RTMP
No
No
No
Yes
Yes
SMRP
No
No
No
Yes
Yes
SRTP
No
No
No
Yes
Yes
LAT
No
No
No
Yes
Yes
PPP
Yes
Yes
Yes
Yes
Yes
Rlogin
Yes
Yes
Yes
Yes
Yes
Telnet
Yes
Yes
Yes
Yes
Yes
TN3270
No
No
No
Yes
Yes
X.25
Yes
Yes
Yes
Yes
Yes
ARAP 1.0/2.0
No
No
No
Yes
Yes
Asynchronous Master Interfaces
Yes
Yes
Yes
Yes
Yes
ATCP
No
No
No
Yes
Yes
CPPP
Yes
Yes
Yes
Yes
Yes
CSLIP
Yes
Yes
Yes
Yes
Yes
DHCP
Yes
Yes
Yes
Yes
Yes
IP Pooling
Yes
Yes
Yes
Yes
Yes
IPX and ARAP on Virtual Async Interfaces
No
No
No
Yes
Yes
IPXCP
No
No
No
Yes
Yes
MacIP
No
No
No
Yes
Yes
NASI
No
No
No
Yes
Yes
NetBEUI over PPP
No
No
No
Yes
Yes
PPP
Yes
Yes
Yes
Yes
Yes
SLIP
Yes
Yes
Yes
Yes
Yes
Airline Product Set (ALPS)
No
No
No
No
No
Cisco IOS File System
Yes
Yes
Yes
Yes
Yes
Cisco MC3810 - IGX 8400 Interworking
No
Yes
Yes
Yes
Yes
Entity MIB
Yes
Yes
Yes
Yes
Yes
Expression MIB
Yes
Yes
Yes
Yes
Yes
OSPF Point to Multipoint
Yes
Yes
Yes
Yes
Yes
Per Port Debugging (Conditionally Triggered Debugging)
Yes
Yes
Yes
Yes
Yes
Priority Queuing Support Enhancement for Cisco MC3810-IGX Interworking
No
Yes
Yes
Yes
Yes
SNMP Manager
Yes
Yes
Yes
Yes
Yes
Access Lists
Yes
Yes
Yes
Yes
Yes
Access Security
Yes
Yes
Yes
Yes
Yes
Additional Vendor-Proprietary RADIUS Attributes
Yes
Yes
Yes
Yes
Yes
Authenticating ACLs
No
No
No
No
No
Automated Double Authentication
No
No
No
Yes
Yes
Certificate Authority Interoperability
No
No
No
No
No
Context-Based Access Control (CBAC)
No
No
No
No
No
Extended Access Lists
Yes
Yes
Yes
Yes
Yes
Internet Key Exchange Security Protocol
No
No
No
No
No
IPSec Network Security
No
No
No
No
No
Kerberized Login
No
No
No
Yes
Yes
Kerberos V Client Support
No
No
No
Yes
Yes
Lock and Key
Yes
Yes
Yes
Yes
Yes
Mac Security for Hubs
Yes
Yes
Yes
Yes
Yes
Md5 Routing Authentication
Yes
Yes
Yes
Yes
Yes
MS-CHAP Support
No
No
No
Yes
Yes
Named Method Lists for AAA Authentication & Accounting
Yes
Yes
Yes
Yes
Yes
Network Layer Encryption (40-bit or Export Controlled 56-bit DES)
No
No
No
No
No
RADIUS
Yes
Yes
Yes
Yes
Yes
Router Authentication
No
No
No
No
No
Sublock Phase 1
Yes
Yes
Yes
Yes
Yes
TACACS+
Yes
Yes
Yes
Yes
Yes
Switching
Enhanced ATM VC Configuration and Management
No
No
Yes
No
Yes
Multiple ISDN Switch Types
Yes
Yes
Yes
Yes
Yes
LAT
No
No
No
Yes
Yes
Rlogin
Yes
Yes
Yes
Yes
Yes
Telnet
Yes
Yes
Yes
Yes
Yes
TN3270
No
No
No
Yes
Yes
X.25 Pad
Yes
Yes
Yes
Yes
Yes
Xremote
No
No
No
Yes
Yes
Analog Signaling
No
Yes
Yes
Yes
Yes
Call Detail Records (CDR)
No
Yes
Yes
Yes
Yes
E1 CAS Signaling3
No
Yes
Yes
Yes
Yes
Fancy Queuing on Frame Relay or Cisco HDLC
Yes
Yes
Yes
Yes
Yes
G.726 (ADPCM)
No
Yes
Yes
Yes
Yes
Gain Control
No
Yes
Yes
Yes
Yes
ISDN PRI QSIG Voice Signaling
No
Yes
Yes
Yes
Yes
Local Dialing
No
Yes
Yes
Yes
Yes
Local Voice Busy Out
No
Yes
Yes
Yes
Yes
Multiple Ring Tones
No
Yes
Yes
Yes
Yes
ISDN BRI Voice
No
Yes
Yes
Yes
Yes
Facility Data Link on Multiflex Trunk
No
Yes
Yes
Yes
Yes
Multi-length Dial Patterns
No
Yes
Yes
Yes
Yes
Off-Net Dialing
No
Yes
Yes
Yes
Yes
On-Net/Off-Net Call Rerouting
No
Yes
Yes
Yes
Yes
OPX Ring-Through
No
Yes
Yes
Yes
Yes
Pass-Through Voice
Yes
Yes
Yes
Yes
Yes
Permanent Connection
No
Yes
Yes
Yes
Yes
PLAR
No
Yes
Yes
Yes
Yes
Preference-based Hunt Groups
No
Yes
Yes
Yes
Yes
Remote Dialing
No
Yes
Yes
Yes
Yes
T1 CAS Signaling
No
Yes
Yes
Yes
Yes
Transparent CCS
No
Yes
Yes
Yes
Yes
Voice Activity Detection
No
Yes
Yes
Yes
Yes
Voice over ATM
No
No
Yes
No
Yes
Voice over Frame Relay
No
Yes
Yes
Yes
Yes
Voice over HDLC
No
Yes
Yes
Yes
Yes
Voice over IP
No
No
No
No
No
Bandwidth-on-Demand
Yes
Yes
Yes
Yes
Yes
Custom and Priority Queuing4
Yes
Yes
Yes
Yes
Yes
Dial Backup
Yes
Yes
Yes
Yes
Yes
Dial-on-Demand
Yes
Yes
Yes
Yes
Yes
DRP Server Agent
Yes
Yes
Yes
Yes
Yes
Header, Link and Payload Compression
Yes
Yes
Yes
Yes
Yes
Snapshot Routing
Yes
Yes
Yes
Yes
Yes
Weighted Fair Queuing4
Yes
Yes
Yes
Yes
Yes
Always On/Direct ISDN
No
No
No
No
No
ATM LAN Emulation: Decnet Routing and Banyan Vines Support
No
No
Yes
No
Yes
ATM LAN Emulation: (HSRP and SSRP)
No
No
Yes
No
Yes
ATM: Rate Queues for SVC per Subinterface
No
No
Yes
No
Yes
ATM: UNI 3.1 Signaling for ATM
No
No
Yes
No
Yes
Combinet Packet Protocol (CPP)
No
No
No
No
No
Dialer Profiles
Yes
Yes
Yes
Yes
Yes
Dialer Watch
Yes
Yes
Yes
Yes
Yes
Facility Data Link Capabilities on Multiflex Trunk
Yes
Yes
Yes
Yes
Yes
Frame Relay Compression (FRF.9)
Yes
Yes
Yes
Yes
Yes
Frame Relay SVCs Support (DTE)
No
No
No
No
No
Frame Relay Traffic Shaping
Yes
Yes
Yes
Yes
Yes
Frame Relay Switching
Yes
Yes
Yes
Yes
Yes
Frame Relay UNI
Yes
Yes
Yes
Yes
Yes
Frame Relay-ATM Interworking (FRF.5)
No
No
Yes
No
Yes
Half Bridge/Half Router For CPP And PPP
Yes
Yes
Yes
Yes
Yes
HDLC
Yes
Yes
Yes
Yes
Yes
Integrated BRI Backup5
No
Yes
Yes
Yes
Yes
IPXwan 2.0
No
No
No
Yes
Yes
ISDN
Yes
Yes
Yes
Yes
Yes
ISDN Advise of Charge
Yes
Yes
Yes
Yes
Yes
ISDN Caller ID Callback
Yes
Yes
Yes
Yes
Yes
ISDN NFAS
Yes
Yes
Yes
Yes
Yes
Leased Line ISDN at 128 kbps
No
No
No
No
No
MPPC-MS PPP Compression
Yes
Yes
Yes
Yes
Yes
MS Callback
No
No
No
No
No
Multichassis Multilink PPP (MMP)
No
No
No
Yes
Yes
National ISDN Switch Type
Yes
Yes
Yes
Yes
Yes
PPP
Yes
Yes
Yes
Yes
Yes
SMDS
Yes
Yes
Yes
Yes
Yes
Stackable Home Gateway
No
No
No
No
No
Switched 56
Yes
Yes
Yes
Yes
Yes
Virtual Private Dialup Network (VPDN)
No
No
No
Yes
Yes
Voice over Frame Relay Using FRF.11 and FRF.12
Yes
Yes
Yes
Yes
Yes
X.25
Yes
Yes
Yes
Yes
Yes
X.25 Enhancements
Yes
Yes
Yes
Yes
Yes
X.25 on ISDN
Yes
Yes
Yes
Yes
Yes
X.25 over Frame Relay (Annex G)
Yes
Yes
Yes
Yes
Yes
X.25 Switching between PVCs
and SVCsYes
Yes
Yes
Yes
Yes
1 Voice signaling on CES is not available.
2 ATM PVCs only. SVCs are not supported.
3 Includes T1 CAS protocols, UK Standard CAS (Mercury protocol), and CEPT standard E&M.
4 Applicable to data-only interfaces.
5 When you use the older motherboard (SCB 6.06) with this feature, you cannot use serial port 1. When you use the new motherboard (SCB 6.07), you can use serial port 1 clocked at speeds up to 192 kbps.
Cisco IOS File System
To make file management easy, the Cisco MC3810 provides a complete file system for software images, message files and reports. The standard Flash memory size is 8 MB, and a 16-MB upgrade option can simultaneously hold two code images for fail-safe upgrades.
New and Changed Information
The following sections list new information about the Cisco MC3810 in Cisco IOS Release 12.0(3)XG.
New Features in Release 12.0(3)XG
The following hardware and software enhancements are available for the Cisco MC3810 in Cisco IOS Release 12.0(3)XG.
ISDN BRI Voice on the Cisco MC3810
With the optional BRI voice module (BVM) installed, the Cisco MC3810 multiservice access concentrator provides four ISDN Basic Rate Interface (BRI) ports for connection to ISDN PBXs (PINXs). The BVM has four ISDN BRI ports for voice traffic. Each BRI port supports two voice channels (ISDN B channels) and one signaling channel (ISDN D channel). The BRI voice ports have the following features:
•
•
•
•
•
•
•
Voice over Frame Relay Using FRF.11 and FRF.12
The Voice over Frame Relay (VoFR) capabilities that were introduced on the Cisco MC3810 multiservice access concentrator beginning with IOS Release 11.3 are now extended to the Cisco 2600, 3600, and 7200 series router platforms.
The following additional functionality is supported in Release 12.0(3)XG:
•
•
•
•
When VoFR is implemented on a Cisco router, the router is able to carry voice traffic, such as telephone calls and faxes over a Frame Relay network.
This feature also adds support for full FRF.11 and FRF.12 compliance to the Cisco MC3810 and is backward-compatible with earlier versions of the Cisco MC3810, which used a fragmentation format based on an early draft version of FRF.12.
Important Notes
This section contains important information about the use of your Cisco IOS Release 12.0(3)XG software.
Using the Cisco MC3810 with the PSTN
This section describes important notes regarding use of the Cisco MC3810 with the Public Switched Telephone Network (PSTN).
Connections to a PSTN
Be careful when connecting switched voice ports on the Cisco MC3810 directly to the PSTN because improper configurations can expose the corporate network to telephone fraud.
Switched Access from the PSTN
The Cisco MC3810 has the capability to connect a user from the PSTN directly to the corporate wide-area telephone network. Using the Cisco MC3810 as a phone switch, you can configure the access concentrator to switch the user to any location in that network, even to remote locations that are connected again to another PSTN. However, the Cisco MC3810 does not provide any mechanism to restrict users from calling after they are connected. Without proper network design, this condition could result in the unauthorized use of the corporate network for making calls at the corporation's expense. To prevent this from occurring, you should not connect a switched voice interface on the Cisco MC3810 directly to the PSTN. Instead, connect the interface to a PBX that implements a security scheme that prevents unauthorized use.
Non-Switched Calls
The same opportunity for illicit use does not exist for non-switched call types, such as pass-through connections (although the possibility for fraud does exist at the direct contact point). Pass-through calls create a path to a single location specified by the network administrator. For example, you might use a pass-through connection to pass a trunk from a PBX to the PSTN. In this case, the trunk on the PBX always passes straight through the Cisco MC3810 to the PSTN. As a result, the necessary security is provided by the PBX.
Caveats
This section contains open caveats for the current Cisco IOS maintenance release only. Caveats describe unexpected behavior or defects in Cisco IOS software releases. The caveats listed below are severity 3, moderately serious, with the exception of CSCdk74350, as noted in the description.
For information on caveats in Cisco IOS Release 12.0, refer to the document Caveats for Cisco IOS Release 12.0 that describes caveats affecting all maintenance releases. Because Release 12.0(3)XG is based on Release 12.0, all caveats in Release 12.0 are also in Release 12.0(3)XG.
Cisco IOS Release 12.0(3)XG is also based on Cisco IOS Release 12.0(3)T. For information on other caveats that also apply to this release, refer to the Caveats for Cisco IOS Release 12.0 T document. This caveats document lists severity 1 and 2 caveats for Release 12.0 T. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.
Note
•
This is a severity 2 caveat. On permanent calls (cisco-trunk or frf11-trunk) between two Cisco MC3810 units, the Calling and Called fields within the Call Detail Record (CDR) are empty.
•
When making a fax call through a permanent connection using either a frf11-trunk or cisco-trunk, some brands of fax machine may report an error at the end of the fax call, even though the fax was transmitted correctly.
The problem is caused by a slightly premature on-hook signal going to the fax machine at the end of the call. This causes the final fax T.30 DCN (disconnect message) to the receiving fax machine to be chopped off.
At this point the transmission of the fax image is complete, but some fax machines may report an error as a result of the missing DCN message. The fax machine continues to operate correctly after this and can receive and send additional fax messages.
•
The router may crash unexpectedly if the voice mode for a frame-relay permanent virtual circuit (PVC) is changed too quickly while voice connections are active on the PVC.
Workarounds: Shut down the voice connections using the PVC (for example, by executing no connection trunk on the voice port) before attempting to change the PVC voice mode from vofr to vofr cisco. The router does generate a warning message, informing the user that connections are active, when the command no vofr is entered.
Alternatively, simply wait for about 30 seconds after issuing the no vofr command and before entering the command vofr cisco, giving the voice connections time to be torn down completely and avoid this problem.
•
The DTMF detector used for DTMF digit relay is designed to meet the requirements of EIA-464, which are: "The receiver should register DTMF signals having a power per frequency of -25 to 0 dBm."
With this range, one would expect the DTMF digit-relay feature to correctly handle digits generated by a PBX or CO for call routing on trunks or tie lines. However, this range may not be sufficient to handle DTMF digits sent after call setup over long distance—for example, when accessing a voice mail system—where the total call path has a significant amount of attenuation.
Related Documentation
The following sections describe the documentation available for the Cisco MC3810. Typically, these documents consist of hardware installation guides, 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 only available online.
You can find the most up-to-date documentation on CCO and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hardcopy documents were printed.
Use these release notes with the documents listed in the following sections:
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Release-Specific Documents
The following documents are specific to Cisco IOS Releases 12.0 T and 12.0, on which Release 12.0(3)XG is based. They are located on CCO and the Documentation CD-ROM:
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To reach the cross-platform Release Notes for Cisco IOS Release 12.0 on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
To reach the cross-platform Release Notes for Cisco IOS Release 12.0 on the Documentation CD-ROM, follow this path:
Cisco IOS Software Configuration: Cisco IOS Release 12.0: Release Notes: Cross-Platform Release Notes
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To access these documents on CCO, select Technical Documents under the Service & Support heading.
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As a supplement to the caveats listed in the "Caveats" section in these release notes, see the Caveats for Cisco IOS Release 12.0 T document that contains caveats applicable to all platforms for all maintenance releases of Release 12.0 T. Caveats for Release 12.0(3)T apply to Release 12.0(3)XG.
To reach the caveats document on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T
To reach the caveats document on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS 12.0: Caveats: Caveats for Cisco IOS Release 12.0 T
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Platform-Specific Documents
The documents listed below are available for the Cisco MC3810. These documents are also available online at Cisco Connection Online (CCO) and on the Documentation CD-ROM.
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To reach Cisco MC3810 documentation on CCO, follow this path:
Service & Support: Documentation Home Page: Access Servers and Access Routers: Multiservice Access Concentrators
To reach Cisco MC3810 documentation on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Access Servers and Access Routers: Multiservice Access Concentrators
Feature Modules
Feature modules describe new features supported by Cisco IOS Release 12.0 T, 12.0(3)XG, and other ED releases and are updates to the Cisco IOS documentation set. They consist of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the features modules are available online only. The feature module information is included in the next printing of the Cisco IOS documentation set.
To reach the feature modules on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation
To reach the feature modules on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: New Feature Documentation
Cisco IOS Software Document Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. These documents are shipped with your order in electronic form on the Documentation CD-ROM—unless you specifically ordered the printed versions.
Documentation Modules
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, Cisco IOS software functionality, and comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Each configuration guide can be used in conjunction with its corresponding command reference.
To reach these documents on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
To reach these documents on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0: Configuration Guides and Command References
Cisco IOS Release 12.0 Documentation Set
describes the contents of the Cisco IOS Release 12.0 software documentation set. The document set is available in electronic form and also in printed form upon request.
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To reach the Cisco IOS documentation set on CCO, follow this path:
Service & Support: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.0
To reach the Cisco IOS documentation set on the Documentation CD-ROM, follow this path:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.0
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Service and Support
For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs that are described in the "Service and Support" section of the information packet shipped with your product.
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For service and support for a product purchased directly from Cisco, use CCO.
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
If you have a CCO login account you can access the following URL. It contains links and helpful tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/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: Products & Technologies: Products: Technical Tips.
The following sections are provided from the Technical Tips page:
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Cisco Connection Online
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
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For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
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Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package that ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
If you read Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.
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