Note The last release of Cisco IOS Release 12.2 XN is Cisco IOS Release 12.2(2) XN. The migration path
for customers who need bug fixes for Cisco IOS Release 12.2(2) XN features is Cisco IOS Release
12.2(11)T. Cisco IOS Release 12.2(11)T release has the complete feature content of Cisco IOS
Release 12.2(2) XN and will eventually reach general deployment (GD).
These release notes support Cisco IOS Release 12.2(2)XN. These release notes are updated as needed to describe new features, memory requirements, hardware support, software platform deferrals, and changes to the microcode or modem code and related documents.
Contents
These release notes describe the following topics:
This is a special release of Cisco IOS, providing voice and telephony features for the following platforms:
Cisco Voice Gateway 200 (VG200)—a compact (one-rack unit) device, which is designed for branch offices that do not require integrated WAN data traffic management.
Cisco 2600 series—widely deployed modular access routers designed to enable customers to easily adopt future technologies and scale to accommodate network expansion. The Cisco 2600 series shares modular interfaces with the Cisco 1600, Cisco 1700, and the Cisco 3600 series, providing a solution to meet current branch office needs. The new features described in this document are supported on the c2600-js-mz Enterprise Plus image for the Cisco IOS 12.2(2)XN release.
Cisco 3600 series—includes the Cisco 3620, Cisco 3640, and Cisco 3660 routers. As modular solutions, the Cisco 3600 series routers enable corporations to increase dialup density and take advantage of current and emerging WAN technologies and networking capabilities. The new features described in this document are supported on the c3620-js-mz, c3640-js-mz, c3660-js-mz Enterprise Plus images for the Cisco IOS 12.2(2)XN release.
Single-Point Configuration of IOS MGCP Gateway in an AVVID Network
When you use your voice gateway with MGCP and Cisco CallManager Release 3.1 or later, the gateway can use the Trivial File Transfer Protocol (TFTP) to automatically download and configure most of the configuration information it requires to operate. You configure MGCP using the Cisco CallManager Administration, a web-based graphic user interface (GUI), using the instructions provided in the on-line help and documentation provided with the Cisco CallManager system. On the gateway, you complete basic Cisco IOS configuration and identify the TFTP download server with the following commands:
ccm config server <tftp_server>
ccm config
With this feature, you do not have to manually synchronize MGCP voice gateway configuration between the gateway and Cisco CallManager. Whenever you change the gateway configuration on the Cisco CallManager, restarting the gateway enables the new configuration. This feature makes it easy to ensure consistent configuration for all the voice gateways of a specific type or function.
Note When you use MGCP with Cisco CallManager Release 3.0, you need to complete MGCP
configuration using Cisco IOS command line interface (CLI) commands on the local gateway. You
must still complete the Cisco CallManager configuration using the Cisco CallManager
Administration. The configuration on each local gateway must match the configuration on
Cisco CallManager for that gateway.
For more information, see Interworking of Cisco MGCP Voice Gateways and Cisco CallManager Version 3.1 at the following location:
MGCP gateway fallback is a feature that improves the reliability of MGCP branch networks. A WAN link connects the MGCP gateway at a remote site to the Cisco CallManager at a central site, which is the MGCP call agent. If the WAN link fails, the fallback feature keeps the gateway working as an H.323 gateway and re-homes back to MGCP when the WAN link comes up.
Note For MGCP gateway fallback, configure the dial-peers last, after the MGCP gateway configuration
download.
Note For an MGCP gateway that has a PRI backhaul interface, do not change the configuration of the
gateway while it is in H.323 fallback mode. If a change is inevitable during the period of fallback,
first disable the MGCP gateway fallback feature by using the no ccm fallback command. After the
change, re-enable ccm fallback.
MGCP gateway fallback works in conjunction with the Survivable Remote Site Telephony (SRST) feature. SRST allows Cisco gateways and routers to manage connections temporarily for Cisco IP Phones when a connection to a Cisco CallManager is unavailable.
For more information, see Interworking of Cisco MGCP Voice Gateways and Cisco CallManager Version 3.1 at the following location:
You can now use MGCP with T1/ISDN-PRI and E1/ISDN-PRI connections with Layer 3 Backhaul. Layer 3 Backhaul tunnels ISDN Layer 3 and above to the Cisco CallManager.
PRI/Q.931 signaling backhaul transports signals (Q.931 and higher layers) for processing from a PRI trunk physically connected to an MGCP gateway to a MGCP call agent. The ISDN lower layer information (Q.921 and below) is terminated and processed on the gateway. The Layer 3 information (Q.931 and above) is transported over TCP to the Cisco CallManager (MGCP call agent).
For more information, see Interworking of Cisco MGCP Voice Gateways and Cisco CallManager Version 3.1 at the following location:
Cisco voice gateway platforms running 12.2(2)XN now support multicast streaming of music to users on hold, for Cisco CallManager Release 3.1 and later. This feature provides the capability of placing callers on hold with music supplied from a streaming Music-On-Hold (MOH) server.
For more information, see Interworking of Cisco MGCP Voice Gateways and Cisco CallManager Version 3.1 at the following location:
Required memory resources for the Cisco VG200 include:
Flash memory—8 MB
DRAM memory—64 MB
Required memory resources for the the Cisco 2600 and Cisco 3620 include:
Flash memory—16 MB
DRAM memory—64 MB
Required memory resources for the Cisco 3640 Series Enterprise Plus and Cisco 3660 Series Enterprise Plus include:
Flash memory—32 MB
DRAM memory—96 MB
Required memory resources for the Cisco 3640 and Cisco 3660 IP Plus feature sets include:
Flash memory—16 MB
DRAM memory—64 MB
Determining the Software Version
To determine the version of Cisco IOS software running on a Cisco VG200, Cisco 2600 or Cisco 3600, log in to the router and enter the show version EXEC command. An example follows:
router> show version
Cisco Internetwork Operating System Software
IOS (tm) VG200 Software (vg200-i6s-mz), Version 12.2(2)XN, RELEASE SOFTWARE
Upgrading to a New Software Release
For general information about upgrading to a new software release, see the product bulletin, Cisco IOS Upgrade Ordering Instructions located on CCO at:
This section lists the interfaces available on the platforms that are supported for use with Cisco IOS Release 12.2(2)XN. It includes the following topics:
VWIC-2MFT-T1-D1 Two-Port RJ-48 Multiflex Trunk—T1 with Drop & Insert support
VWIC-1MFT-E1 One-Port RJ-48 Multiflex Trunk—E1
VWIC-2MFT-E1 Two-Port RJ-48 Multiflex Trunk—E1
VWIC-2MFT-E1-D1 Two-Port RJ-48 Multiflex Trunk—E1 with Drop & Insert support
WAN Interface Cards
Not supported for Cisco VG200. Refer to the product-specific documentation for other supported platforms.
Supported Interfaces for the Cisco 2600 Series Routers
Table 2 lists the supported interfaces for the Cisco 2600 series routers.
Table 2 Supported Interfaces for the Cisco 2600 Series Routers
Interface, Network Module, or Data Rate1
Product Description
Platforms Supported
LAN Interfaces2
1- or 2-port Ethernet (10BASE-T)
All Cisco 2600 series platforms
1-port Token Ring (RJ-45)
Cisco 2612, Cisco 2613
1- or 2-port 10/100-Mbps Ethernet
Cisco 2620, Cisco 2621, Cisco 2650, Cisco 26513
LAN Network Modules
1-port Ethernet
All Cisco 2600 series platforms
4-port Ethernet
All Cisco 2600 series platforms
Serial Network Modules
16- or 32-port asynchronous/synchronous serial low speed (128 kbps max)
All Cisco 2600 series platforms
4- or 8-port asynchronous/synchronous serial low speed (128 kbps max)
All Cisco 2600 series platforms
ATM Network Modules1
4-port T1 ATM network module with IMA (NM-4T1-IMA)
All Cisco 2600 series platforms
4-port E1 ATM network module with IMA (NM-4E1-IMA)
All Cisco 2600 series platforms
8-port T1 ATM network module with IMA (NM-8T1-IMA)
All Cisco 2600 series platforms
8-port E1 ATM network module with IMA (NM-8E1-IMA)
All Cisco 2600 series platforms
1-port ATM T3 network module (NM-1A-T3)
All Cisco 2600 series platforms
1-port ATM E3 network module (NM-1A-E3)
All Cisco 2600 series platforms
1-port ATM-25 RJ-45 interface
All Cisco 2600 series platforms
Digital T1 Packet Voice Trunk Network Modules and Spare Components
1-port, 24-channel T1 voice/fax module supports 24 channels of medium-complexity codecs: G.729a/b, G.726, G.711, and fax; or 12 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, two PVDM-12s, and one VWIC-1MFT-T1.4 Part number: NM-HDV-1T1-24.
All Cisco 2600 series platforms
1-port, enhanced 24-channel T1 voice/fax module, supports 24 channels of high- and medium-complexity codecs: G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, four PVDM-12s, and one VWIC-1MFT-T1.4 Part number: NM-HDV-1T1-24E.
All Cisco 2600 series platforms
2-port, 48-channel T1 voice/fax module supports add/drop multiplexing (drop and insert); 48 channels of medium-complexity codecs: G.729a/b, G.726, G.711, and fax; or 24 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, four PVDM-12, and one VWIC-2MFT-T1-DI.4 Part number: NM-HDV-2T1-48.
1-port T1/fractional T1 with DSU/CSU WAN Interface Card (WIC-1DSU-T1)
All Cisco 2600 series platforms
1-port high-speed serial (up to 2.048 Mbps)
All Cisco 2600 series platforms
2-port dual high-speed serial (up to 2.048 Mbps; asynchronous/synchronous support)
All Cisco 2600 series platforms
2-port asynchronous/synchronous (up to 128 kbps) (WIC-2A/S[=]
All Cisco 2600 series platforms
Other Network Module
Data compression AIM (up to 8.192 Mbps)
All Cisco 2600 series platforms
Hardware encryption AIM
All Cisco 2600 series platforms
NM-AIC-64, Contact Closure Network Module
All Cisco 2600 series platforms
1The voice/fax and ATM-25 network modules require Cisco IOS Plus feature sets.
2The 1- or 2-port 10/100 Ethernet LAN interface for the Cisco 2620 and Cisco 2621 series routers is only available in Cisco IOS Release 12.0 XC and later releases.
3Cisco 2650 and 2651 routers require Cisco IOS Release 12.1(3a)T1 or later releases.
4See T1/E1 multiflex voice/WAN interface cards in this table.
5T1 multiflex voice/WAN interface cards can be used in a chassis slot or installed in a digital T1 packet voice trunk module. E1 multiflex voice/WAN interface cards can be installed in a chassis slot.
1-port ATM OC-3 network module with single-mode long reach fiber (NM-1A-OC3SML)
All Cisco 3600 series platforms
1-port ATM OC-3 multimode network module and circuit emulation service (NM-1A-OC3MM-1V)2
All Cisco 3600 series platforms
1-port ATM OC-3 single-mode, intermediate reach network module and circuit emulation service (NM-1A-OC3SMI-1V)2
All Cisco 3600 series platforms
1-port ATM OC-3 single-mode, long reach network module and circuit emulation service (NM-1A-OC3SML-1V)2
All Cisco 3600 series platforms
Digital T1/E1 Packet Voice Trunk Network Modules and Spare Components
1-port, 24-channel T1 voice/fax module supports 24 channels of medium-complexity codecs: G.729a/b, G.726, G.711, and fax; or 12 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, two PVDM-12s, and one VWIC-1MFT-T1.3 Part number: NM-HDV-1T1-24.
All Cisco 3600 series platforms
1-port, enhanced 24-channel T1 voice/fax module, supports 24 channels of high- and medium-complexity codecs: G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, four PVDM-12s, and one VWIC-1MFT-T1.2 Part number: NM-HDV-1T1-24E.
All Cisco 3600 series platforms
2-port, 48-channel T1 voice/fax module supports add/drop multiplexing (drop and insert); 48 channels of medium-complexity codecs: G.729a/b, G.726,G.711, and fax; or 24 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, four PVDM-12, and one VWIC-2MFT-T1-DI.2 Part number: NM-HDV-2T1-48.
All Cisco 3600 series platforms
1-port, 30-channel E1 voice/fax module, supports 30 channels of G.729a/b, G.726, G.711 and fax or 18 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, three PVDM-12s, and one VWIC-1MFT-E13. Part number: NM-HDV-1E1-30(=)
All Cisco 3600 series platforms
Digital T1/E1 Packet Voice Trunk Network Modules and Spare Components (continued)
1-port, enhanced 30-channel E1 voice/fax module supports 30 channels of G.729a/b, G.726, G.729, G.728, G.723.1, G.711, and fax. Consists of one NM-HDV, five PVDM-12s, and one VWIC-1MFT-E1.3 (NM-HDV-1E1-30E(=)).
All Cisco 3600 series platforms
2-port, 60-channel E1 voice/fax module supports add/drop multiplexing (drop and insert); 60 channels of G.729a/b, G.726, G.711, and fax or 30 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax. Consists of one NM-HDV, five PVDM-12s, and one VWIC-2MFT-E1-D1.3 Part number NM-HDV-2E1-60(=)
All Cisco 3600 series platforms
High-density voice/fax network module spare. Part number: NM-HDV.
Digital T1 packet voice trunk network modules spare component
12-channel packet voice DSP module upgrade spare. Part number: PVDM-12=.
Digital T1 packet voice trunk network modules spare component
1-port RJ-48 multiflex trunk—T1 (VWIC-1MFT-T1)2
Digital T1 packet voice trunk network modules spare component
2-port RJ-48 multiflex trunk—T1 (VWIC-2MFT-T1)2
Digital T1 packet voice trunk network modules spare component
2-port RJ-48 multiflex trunk with drop and insert—T1 (VWIC-2MFT-T1-DI(=))2
Digital T1 packet voice trunk network modules spare component
2For the Cisco 3660 series only, online insertion and removal (OIR) is now supported in Cisco IOS Release 12.2 T.
3See T1/E1 multiflex voice/WAN interface cards in this table.
4For Cisco 3660 series, only supported in T1/E1 digital packet voice trunk network modules and new Fast Ethernet mixed media network modules: NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W. For Cisco 3620 and 3640, supported in T1/E1 digital packet voice trunk network modules or in 1- or 2-port Ethernet and Fast Ethernet network modules (NM-1E2W, NM-2E2W, NM-1E1R2W, NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W).
5Supported in Fast Ethernet mixed media network modules: NM-1FE2W, NM-2FE2W, NM-1FE1R2W, NM-2W.
Important Notes
This section contains important notes about the following topics:
When using an H.323 T1-CAS E&M port on the Cisco VG200, Incoming Caller ID Digits may not be processed correctly by Cisco IP IVR applications, such as Cisco IP Auto-Attendant.
Depending on the T1-CAS line provisioning, incoming DNIS digits received by the Cisco VG200 after its first wink to the Central Office (CO) are treated as user-entered digits and are sent to the remote endpoint as out-of-band DTMF digits. If the remote endpoint is a Cisco IP IVR application, the out-of-band digits will be interpreted as a user entry and change the application response. There are two ways to handle this situation:
Request the T1 service provider to stop sending DNIS digits.
Configure an IP phone with the same directory number as the incoming DNIS, then modify the "forward all" selection for this phone so that it sends the incoming call to the desired destination.
Add an H.323 translation rule to the configuration to replace the incoming DNIS from the PSTN with the destination number of the IP IVR.
Managing Input Gain for Cisco IP Voice Applications
When using the FXO ports on a Cisco VG200, set the input gain greater than 10 to achieve adequate audio quality for use with Cisco IP voice applications or the Cisco IP Phone 7960. Enter the following series of commands from the Cisco IOS command line to set the correct value for input gain:
vg200# configure terminal
vg200(config)# voice-port x/x/x input gain <value>
Permitted entries for <value> are from -6 to 14. Gain values higher than 12 may cause DTMF recognition difficulties.
Enabling DTMF Relay with MGCP
Make sure that you use the MGCP configuration command for enabling DTMF relay. If this command is not configured, DTMF tones will not be regenerated correctly on the remote endpoint. The required command is as follows:
router(config)# mgcp dtmf-relay codec all mode out-of-band
For further information about configuring MGCP, refer to the Software Configuration Guidefor the Cisco VG200.
Deprecated MIBs
Older Cisco Management Information Bases (MIBs) will be replaced in a future release. OLD-CISCO-* MIBS are currently migrated into more scalable MIBs—without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 4.
Table 4 Deprecated MIBS
Deprecated MIB
Replacement
OLD-CISCO-CHASSIS-MIB
ENTITY-MIB
OLD-CISCO-CPUK-MIB
In Development
OLD-CISCO-ENV-MIB
CISCO-ENVMON-MIB
OLD-CISCO-FLASH-MIB
CISCO-FLASH-MIB
OLD-CISCO-INTERFACES-MIB
IF-MIB-CISCO-QUEUE-MIB
OLD-CISCO-IP-MIB
In Development
OLD-CISCO-MEMORY-MIB
CISCO-MEMORY-POOL-MIB
OLD-CISCO-SYS-MIB
(Compilation of other OLD* MIBS)
OLD-CISCO-SYSTEM-MIB
CISCO-CONFIG-COPY-MIB
OLD-CISCO-TCP-MIB
CISCO-TCP-MIB
OLD-CISCO-TS-MIB
In Development
Caveats
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 and severity 4 caveats are still less serious.
CSCds87226
Severity: 3
Description: If you have multiple gateways and receive the following VSC alarm:
MGC-01 - Media Gateway Controller 2000-12-08 08:00:13.720 "IOCM-01:ALM=\"All ISDN IP Conn Fail\",STATE=SET" ;
This does not mean all ISDNs failed—rather only the ones associated with a specific gateway.
Workaround: Use rtrv-dest to determine which ISDNs failed.
CSCdu45593
Severity: 2
A Cisco 3620 router may reload after it is registered as a Media Gateway Control Protocol (MGCP) gateway for calls that terminate on the router.
Workaround: None.
CSCdu51334
Severity: 2
Description: This defect pertains to voice gateways running Cisco IOS Release 12.2T that use the High Density Voice Network Module (NM-HDV). Packet-voice digital signal processors (DSPs) in these gateways may pause indefinitely while displaying the following errors on the console:
This condition is triggered when RTP header-compression (cRTP) is configured on a WAN link between gateways. "Connection trunk" is configured for voice services, and fast-switching is enabled on the interface where cRTP is set. When fast-switched cRTP is configured on a WAN interface, one-way audio occurs shortly after a call begins. Calls that are made to the same trunk and other trunks are affected by the one-way audio condition. All DSPs on the NM-HDV pause with the error message shown above.
Workaround: Avoid using fast-switched cRTP on the WAN interfaces. Either discontinue using cRTP or disable fast-switching on the WAN interface using the following interface configuration command:
no ip route-cache
Process-switched cRTP does not trigger this condition.
CSCdu53333
Severity: 2
Description: A Cisco router that is running Cisco IOS Release 12.2(1) or 12.2(0.5g) may experience digital signal processor (DSP) reloads or fail to respond after the following error messages are displayed:
Description: A glare condition may occur randomly on all voice platforms in Cisco IOS Release 12.2(1a), 12.2(2)T, or 12.2 XA when a busy port is assigned to a new incoming call. A glare condition occurs when two calls are assigned to the same port. For example, if there are only two ports and they are both busy on a call when a new call comes in without a check for glare, one of the busy ports is allocated to the new call. This condition causes the pre-existing call to be disconnected and the new call to receive a busy signal.
Workaround: None.
CSCdu65008
Severity: 2
Description: Outgoing ISDN calls fail if the connected switch responds to an outgoing setup with a setup acknowledgement followed by a "Call Proceeding" message. This situation applies to all ISDN PRI voice platforms and has been observed in Cisco IOS Release 12.2(1) and any later releases.
Workaround: Configure the isdn sending-complete command on the serial interface. This action forces ISDN to send a "sending complete" information element in the outgoing setup, so the switch will simply reply with a "Call Proceeding" message.
CSCdu65282
Severity: 2
Description: Inbound calls from a channel associated signaling (CAS) peer to a Cisco VG200 telephony voice gateway that are bound for an IP phone may experience audio drop-outs. The called party will hear approximately the first half second of audio and then lose one to three seconds. After that time, the audio will return, and no further issues should occur with the call after the initial dropout. Outbound calls do not experience this condition.
Workaround: None.
CSCdu65830
Severity: 2
Description: Up to first three seconds of audio on IP phone not heard when calling to or from some phone numbers.
Workaround: None.
CSCdv18404
Severity: 2
Description: When the router is configured for inbound Delay-Dial CAS/MF signaling, the first inbound call into each DS0 will fail (after router reload). The incoming DNIS will be incorrectly formatted. Subsequent calls will complete normally.
Workaround: Use DTMF signaling for T1 CAS.
CSCdv19354
Severity: 2
Description: A Cisco router may experience digital signal processor (DSP) reloads or fail to respond after the following error messages are displayed:
1d00h:%VTSP-3-DSP_TIMEOUT:DSP timeout on event 0x6:DSP ID=0x1:DSP Disc (call mode=0)
1d00h:%VTSP-3-DSP_TIMEOUT:DSP timeout on event 0x6:DSP ID=0x1:DSP Disc (call mode=0)
Workaround: Reload the router.
CSCdv22942
Severity: 3
Description: Some memory blocks may be displayed as dead following the issue of the IOS command show memory dead. This does not affect functionality of the gateway.
Workaround: None.
CSCdv27407
Severity: 2
Description: A Cisco VG200 may experience digital signal processor (DSP) reloads or fail to respond after the following error messages are displayed:
Description: After a gateway downloads MGCP configuration from Cisco CallManager, all dial-peers beginning with 999, including those for H.323, are deleted.
Workaround: None. Avoid manually configuring dial-peers beginning with 999.
CSCdv68263
Severity: 3
Description: When Cisco gateways are working with Cisco CallManager or third-party endpoints that do not support fastStart and initiate the H.323 slowstart procedures after the user answers the call, there could be a perceptible delay in the media. Problems can include:
Cut-through on slow WAN links.
Round trip latency in the IP network between the gateway and terminating DTE.
Delayed audio cutover.
Workaround: If possible, use h323 fast start. If 12.2(2)XA4 or 12.2XB3 images are used, enable the following hidden command.
#conf t #voice service voip #h323 #no tcp options delay This turns off the Nagle algorithm for H.323 TCP connections and thus reduces the delay.
CSCdv69322
Severity: 2
Description: NO_RING_DESCRIPTORS and DSP_TIMEOUT errors found on the originating C2600 router when making just one analog call to a C2600 router on the terminating side. DSP Timeout errors occur when disconnecting the call. These errors sometimes also occur at the terminating side.
Workaround: Have cRTP disabled and Fast Switching enabled; or have cRTP enabled and Fast Switching disabled.
CSCdv85570
Severity: 3
Description: When a call arrives from the PSTN into an MGCP-controlled T1/CAS port, the call is established, but attempts to send user DTMF tones do not work. The MGCP gateway does not signal the tones to the Call Manager. This problem occurs only with MF signaling configurations and will be observed under the following conditions:
1. Call must be originated from PBX and 2. DTMF relay over MF-CAS failure can be observed only from PBX to MGCP gateway direction.
If the call originated from MGCP side, then DTMF relay will work in either direction. If the call originated from PBX side, then DTMF relay would work only in one direction.
Workaround: Use DTMF signaling.
CSCdw04052
Severity: 3
Description: traceback seen during "sh ccm" after repeated fallback/re-home.
Workaround: None. This defect does not impact any service.
CSCdw21837
Severity: 3
Description: After changing dial-peer prefix, the changed dial-peer does not take effect after you reset or restart the gateway. Even though the new dial-peer appears on the startup and running configuration, no new dial-peer is created. You must reload the gateway to create the new dial-peers. The old dial-peers are not removed after reboot.
Workaround: Reboot the gateway after changing the single point configuration dial-peer prefix. You can either delete or ignore the dial-peers with the old dial-peer prefix.
CSCdw28011
Severity: 2
When ccm-manager fallback is configured on MGCP PRI gateways , fail-over from primary to back-up Cisco CallManager may result in active PRI calls being dropped.
Workaround: None.
CSCdw43225
Severity: 3
Symptom: Changing the hostname to a long string (in this case 41 characters) causes the IP interface to become unavailable. Condition: Making the hostname 41 characters or longer.
Workaround: Keep the hostname fewer than 41 characters.
CSCdw43799
Severity: 3
Description: When changing fast Ethernet speed from 100M to 10M, traceback appears continuously.
Workaround: Change IOMEM size from 20 percent to 10 percent and reload the router.
CSCdw54607
Severity: 3
Description: After reconfiguring an analog phone from the G.729 to G.711 region, the first call may drop. Subsequent calls will operate normally.
Workaround: None.
CSCdw59523
Severity: 3
Description: When only one PVDM DSP module is inserted in the high-density voice interface card, the card supports 12 voice channels, and the configuration download process may configure the incorrect number of PRI channels.
Workaround: Use at least 2 PVDM DSP modules.
CSCdw59545
Severity: 3
Description: C542-1-NO_RING_DESCRIPTORS message sometimes seen during active moh-call. On rare occasions on the 3600 router, the voice ports will stop working, requiring a router reload.
Workaround: Reload the router.
CSCdw60797
Severity: 3
The PRI voice port remains operational after being shut down.
Workaround: Shut the associated controller statement.
CSCdw67679
Severity: 3
Description: There is a conflict between channel-group number and ds0-group timeslot on the same T1 controller of the gateway):
If using channel-group n, you cannot configure any ds0-group having timeslotn+1.
Channel-group n and ds0-group n cannot co-exist, even if the timeslots are exclusive.
Workaround: If using ds0-group x timeslot y-z, configure channel-group a timeslot b-c, where x, y, z, a, b, c are all mutually exclusive.
CSCdw87426
Severity: 3
Description: When configured for MGCP with DTMF out-of-band signaling, the gateway may not relay the DTMF digits that are incoming from a T1/E1 PRI link present on the gateway. Outgoing digits to the T1/E1 PRI link on the gateway are correctly relayed.
Workaround: Retry sending the DTMF digits after hang-up.
Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for
any release. Click on this path: Software Center: Cisco IOS Software: Cisco IOS Bug Toolkit:
Cisco Bug Navigator II. You can also find Bug Navigator II at http://www.cisco.com/support/bugtools
Related Documentation
The following sections describe the documentation available for Cisco IOS Release 12.2. These documents consist of software installation guides, Cisco IOS configuration and command references, system error messages, and other documents.
Documentation is available as printed manuals or electronic documents.
Use these release notes with the documents and tools described in the following sections:
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity
for any release. To reach Bug Navigator II, log in to Cisco.com and click Software Center: Cisco
IOS Software: Bug Toolkit: Bug Navigator II. Another option is to go to
http://www.cisco.com/support/bugtools/bugtool.shtml.
Cisco IOS Software Documentation Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. The Cisco IOS software documentation set is 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 one or more configuration guides and one or more corresponding command references. 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.
The Cisco IOS software documentation set is available on Cisco.com and on the Documentation CD-ROM.
Table 5 lists the contents of the Cisco IOS Release 12.2 software documentation set, which is available in both electronic and printed form.
Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation
CD-ROM. These electronic documents may contain updates and modifications made after the
hard-copy documents were printed.
Cisco IOS User Interfaces File Management System Management
Cisco IOS Bridging and IBM Networking Configuration Guide
Cisco IOS Bridging and IBM Networking Command Reference, Volume 1 of 2
Cisco IOS Bridging and IBM Networking Command Reference, Volume 2 of 2
Transparent Bridging SRB Token Ring Inter-Switch Link Token Ring Route Switch Module RSRB DLSW+ Serial Tunnel and Block Serial Tunnel LLC2 and SDLC IBM Network Media Translation SNA Frame Relay Access NCIA Client/Server Airline Product Set DSPU and SNA Service Point SNA Switching Services Cisco Transaction Connection Cisco Mainframe Channel Connection CLAW and TCP/IP Offload CSNA, CMPC, and CMPC+ TN3270 Server
Cisco IOS Dial Technologies Command Reference, Volume 1 of 2
Cisco IOS Dial Technologies Command Reference, Volume 2 of 2
Dial Access Modem and Dial Shelf Configuration and Management ISDN Configuration Signaling Configuration Point-to-Point Protocols Dial-on-Demand Routing Dial Backup Dial Related Addressing Service Network Access Solutions Large-Scale Dial Solutions Cost-Control Solutions Internetworking Dial Access Scenarios
Cisco IOS Interface Configuration Guide
Cisco IOS Interface Command Reference
LAN Interfaces Serial Interfaces Logical Interfaces
Cisco IOS IP Configuration Guide
Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services
Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols
Cisco IOS IP Command Reference, Volume 3 of 3: Multicast
IP Addressing IP Services IP Routing Protocols IP Multicast
Cisco IOS AppleTalk and Novell IPX Configuration Guide
Cisco IOS AppleTalk and Novell IPX Command Reference
AppleTalk Novell IPX
Cisco IOS Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Configuration Guide
Cisco IOS Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Command Reference
Apollo Domain Banyan VINES DECnet ISO CLNS XNS
Cisco IOS Voice, Video, and Fax Configuration Guide
Cisco IOS Voice, Video, and Fax Command Reference
Voice over IP Call Control Signaling Voice over Frame Relay Voice over ATM Telephony Applications Trunk Management Fax, Video, and Modem Support
Cisco IOS Quality of Service Solutions Configuration Guide
Cisco IOS Quality of Service Solutions Command Reference
Packet Classification Congestion Management Congestion Avoidance Policing and Shaping Signaling Link Efficiency Mechanisms
Cisco IOS Security Configuration Guide
Cisco IOS Security Command Reference
AAA Security Services Security Server Protocols Traffic Filtering and Firewalls IP Security and Encryption Passwords and Privileges Neighbor Router Authentication IP Security Options Supported AV Pairs
Cisco documentation and additional literature are available in a CD-ROM package, which ships 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 as an annual subscription.
Ordering Documentation
Cisco documentation is available in the following ways:
Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace:
Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, in North America, by calling 800 553-NETS(6387).
Documentation Feedback
If you are reading Cisco products 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.
For your convenience, many documents contain a response card behind the front cover for submitting your comments by mail. Otherwise, you can mail your comments to the following address:
Cisco Systems, Inc. Document Resource Connection 170 West Tasman Drive San Jose, CA 95134-9883
We appreciate your comments.
Obtaining Technical Assistance
The following sections provide sources for obtaining technical assistance from Cisco Systems.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can self-register on Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.
The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.
Contacting TAC by Using the Cisco TAC Website
If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:
Cisco.com registered users who cannot resolve a technical issue by using the TAC online resource can open a case online by using the TAC Case Open tool at the following website:
If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:
P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.
P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
CCIP, the Cisco Arrow logo, the Cisco Powered Network mark, the Cisco Systems Verified logo, Cisco Unity, Follow Me Browsing, FormShare, Internet Quotient, iQ Breakthrough, iQ Expertise, iQ FastTrack, the iQ Logo, iQ Net Readiness Scorecard, Networking Academy, ScriptShare, SMARTnet, TransPath, and Voice LAN are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, Discover All That's Possible, The Fastest Way to Increase Your Internet Quotient, and iQuick Study are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherSwitch, Fast Step, GigaStack, IOS, IP/TV, LightStream, MGX, MICA, the Networkers logo, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, RateMUX, Registrar, SlideCast, StrataView Plus, Stratm, SwitchProbe, TeleRouter, and VCO are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries.
All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0206R)
