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Because it's eol. Conditions Pressing the monitor button, no OP. Symptom Not able to configure call-forward system redirecting-expanded. Conditions Not able to configure call-forward system redirecting-expanded on a router. Symptom After a license upgrade from 48 to 64 user license on a UC, the Cisco series phone registration fails with the following errors in debug ephone register output:.

The problem only occurs when the ephone tag value for this phone registration is 56 or higher. Workaround Use an ephone tag that is of lower numerical value. Ephone 55 or lower will work. Symptom When shared line has 2 calls, and these 2 calls disconnect at the same time, the port might hang.

Symptom Build failure is happening for platform images. Conditions FXO ports are members of a huntgroup where the first member port is disconnected or down. Unconfigure max-retry. Under each port, configure "timeouts power-denial 0" so that disconnected ports are moved to offhook state and will not be hunted. Symptom CPU profiling under interrupts is not reliable. Symptom A Cisco router reloads when trying to connect to irc. Conditions The symptom is observed only in the first 36 hours following a reload.

Workaround Do not connect to irc. Conditions This happens when the CLI's parser chain was moved, hence missing them on the platforms. Need to ensure the parser chain is implemented as platform independent. Symptom Consult transfer with third party sip endpoints results in one way audio when the third party endpoint has delayed response to resume request which includes change in rtp stream parameters i. Conditions sip supplementary services refer is disabled.

Symptom IP connectivity fails for the interface following extended pings from FastEthernet interface. The show interface command will indicate that the output queue is wedged:. No indication at this time that this is specific to these images. This problem has not yet been seen on an interface in full duplex mode. Symptom Router reloads with a bus error and no tracebacks. The installed IOS version is any Workaround There is no known workaround available.

Subsequent calls through that same channel continue to fail with "resource unavailable" cause value equal to 47 even after DSP resources have been made available to handle the call. The call must first fail with a legitimate DSP allocation error. Any call made through the same channel as the failed call will also fail. DSP allocation failures on gateway can be checked through the use of the exec command show voice dsp group all. The last line of the show command output includes a counter for "DSP resource allocation failure".

This issue can also be seen in some cases upon bootup. When a gateway is reloaded, system resources will come up with a slightly different timing. If, for example, a PRI interface comes up before the DSP resources have fully initialized, there may be a similar failure. Workaround The workarounds are as follows:. When the gateway comes back up, take the voice-port out of shutdown. An increase of almost 10 percent in CPU utilization is observed with every voice call.

Workaround Remove the AIM compression card from the motherboard. Outbound calls to the SIP provider have one-way audio. The internal IP phone can hear the remote party, but the remote party cannot hear the internal IP phone. Conditions TNP phones with firmware 8. Workaround Wait for about a minute, and the port will automatically recover back to registered. Symptom A call from a night hunt forwarded to BACD dial by an extension to an ephone call forwarding no answer to voicemail goes to the night hunt number and not the last redirected number.

The packets will appear as output drops on the ATM interface statistics. Under the PVC level, there are no drops. The ATM interface s need to be bridge-group configured. The bridge-group is in forwarding mode. Symptom The call-waiting tone will not be generated and the caller ID will not be displayed for the second call to a phone connected to a FXS port.

Configuring either caller-id enable or caller-id enable type 2 on the FXS voice port will trigger this issue. Workaround Configuring caller-id enable type 1 under the voice port will provide call-waiting tone. However, caller-id will not be provided for the second call. This timer dictates how long a T1 CAS, wink-start endpoint must remain offhook before completing a wink.

Failure to expire the timer will cause the c to incorrectly classify a valid wink as invalid, failing outbound calls. Conditions This can happen when there is a brief period of increased CPU usage while a call is in the process of connecting. In other words, a small spike in CPU usage can cause the time to fail to expire, thereby causing a wink failure. This may or may not help depending on the cause of the CPU spikes. A two way conversation is then established between Phone A xxx and Phone C zzz.

Then the call is disconnected. With 8. Conditions If the calls come in a PRI or FXO interface, and a user on an active call on the octoline puts the call on hold while there is an incoming call, it will automatically answer the incoming call. Approximately 13 seconds later the second call is dropped.

If the user requires to put a call on hold while a new call is coming in, they must wait until the incoming call stops ringing. Symptom Memory fragmentation, no call accepted, no output for show run. Symptom A gateway may take an exception when receiving an inbound H call when the call is placed via ISDN overlap sending. Symptom Symptom A video call for a 3G H. Also, in the media sent to the endpoint, the video port is set to 0 as the debug state.

Symptom The dsp allocation signaling dspid command under voice-card on platform is not available. Conditions This issue is on platform alone. Symptom After upgrading to The amount of IO MEM allocated upon boot up of the router has not changed with respect to previous versions. This change in memory consumption is expected due to the integration of new features. Conditions This defect is seen on Symptom Call is terminated after aborting the transfer attempt.

Conditions This problem is observed if transfer-digit-collect is not configured or configured as new , the default. Workaround Configure transfer-digit-collect orig.

Conditions c platform with HW crypto engine. Symptom Router continuously reboots. Conditions This symptom is observed when an NME is installed on the router. Workaround Replace or remove the NME Symptom Software-forced reload occurs on Cisco router.

It does not come up again. This vulnerability could allow valid users to retrieve or write to any file on the device's file system, including the device's saved configuration and Cisco IOS image files, even if the CLI view attached to the user does not allow it.

This configuration file may include passwords or other sensitive information. Devices that are not specifically configured to enable the Cisco IOS SCP server, or that are configured to use it but do not use role-based CLI access, are not affected by this vulnerability.

Workaround There are no workarounds available for this vulnerability apart from disabling either the SCP server or the CLI view feature if these services are not required by administrators. Workaround Have VG endpoints registered with first node. Further Problem Description : The activation of the callback is successful. Erasing the nvram filesystem will remove all configuration files!

Bad configuration memory structure -- try rewriting. It is seen only when XOR and XTO are on the same side, if they are on different sides, the call transfer goes through fine. Symptom Memory leaks are observed in "gk process" when memory lite is disabled.

Conditions When no memory lite cli is configured from the global configuration mode. Conditions Configure memory lite cli from the global configuration mode.

Symptom During the firmware upgrade on E modem using microcode reload command, it is found that the modem upgrade process will stop. Conditions Any firmware upgrade to a newer version fails. Workaround Use the laptop based watcher to upgrade.

Further Problem Description : There are two issues associated with the failures:. The current enzo only uses management channel instead of data channel. The locking code interferes with the firmware upgrade code during the upgrade process, thus the upgrade fails. Observe the LED behavior.

Conditions This happens whenever the call gets connected immediately after sending Alerting response or Progress response to the caller. Symptom A call is disconnected during call resume in a sip-h call. Conditions This symptom is observed under the following conditions:.

Received call resume ReInvite. Capabilities exchanged on H leg. Sent OLC. Symptom show call active voice command may display incorrect value for codecbytes. Symptom Outgoing of router FXO loop-start call randomly disconnected after far-end answered the call. Conditions The far-end is able to generate reverse-battery signal when called side answered the call.

Also, supervisory disconnect was configured to either anytone or dualtone. Workaround Use supervisory disconnect signal if possible. Symptom Call will be disconnected with 2 ipipgws. Conditions The media forking feature used to send stream to ASR server will fail. Workaround This problem is introduced by cvp based media forking feature in Pi Symptom Call over the FXO loop-start cannot be established since gateway's dsp detects reverse-battery signal. Conditions The far-end is able to generate reverse-battery signal when called side is ringing.

Also, supervisory disconnect is configured to either anytone or dualtone. Symptom CME version 7. Ephones register after the initial fail over to SRST and configuration is provisioned by the system, but the preferred codec used is Gulaw instead of Gr8. However if the system is rebooted after the initial fail over, the phones register with correct codec.

Workaround Reboot the system once the configuration ephone and ephone-dn is provisioned in the system. Show voip rtp connection shows one single ip address as the local address in the cube. Conditions Occurs with single point to point or multipoint calls regardless of CTS model. This occurs only when the CTS resides in a different subnet than the interfaces on the cube and the configuration pass- thru content sdp is used in the voice service voip sip menu.

Workaround If the network architecture or policy permits use the Cisco IOS bind command to bind media to single loopback address. This address then can be advertised to connecting networks so that media is routable to the CUBE loopback. Further Problem Description : This issue does not affect the signalling side, just the media. The command pass-thru content sdp was introduced in YB to allow flows that require a G codec such as music on hold. Removing this command can cause disconnects on Hold and Resume.

Symptom When call is disconnected, shared-line resource is not released. They cannot register with CME. Conditions When the phone is configured. The router does not even synchronize with its own internal clock. Conditions Need to have both ntp master and ntp server configured.

Workaround If configuring only "ntp master" or "ntp server", the router will synchronize. The FXS phone goes off-hook and back on-hook. The IP phone then hangs up.

The next call placed will not ring the FXS port. Place the call again and the FXS will ring properly again. Call comes into shared line. IP phone answers. While the line is in-use, the analog phone goes off-hook, then back on-hook. IP phone ends the call. Conditions The issue is seen on Workaround For the first issue there is no known workaround other than placing another call to the DN after the issue is seen, or by not having the FXS phone go offhook during active IP phone calls.

Further Problem Description : Note that the second scenario is not a support solution. The call connected but audio path did not established. Conditions The call has to originate from a SIP phone thru gateway to another cme sccp endpoint and transfer back to a sccp endpoint of original cme then xfer again to another sccp endpoint within the cme.

After the cross cme call and 2 xfers, the error message shown and observed audio path failed. This results in a remote denial of service DoS condition on the affected device. Workarounds that mitigate this vulnerability are available and are documented in the workarounds section of the posted advisory. By manipulating the state of a TCP connection, an attacker could force the TCP connection to remain in a long-lived state, possibly indefinitely. If enough TCP connections are forced into a long-lived or indefinite state, resources on a system under attack may be consumed, preventing new TCP connections from being accepted.

In some cases, a system reboot may be necessary to recover normal system operation. To exploit these vulnerabilities, an attacker must be able to complete a TCP three-way handshake with a vulnerable system.

This additional vulnerability was found as a result of testing the TCP state manipulation vulnerabilities. Cisco has released free software updates for download from the Cisco website that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available.

Symptom Memory leak was found after voice stress testing on a Cisco Testing was performed for 2 hours, and call duration was 60 seconds. Symptom During 7xi2b monitoring c10k crashed at igmp-process. Note that WFQ is the default for some types of dialer interfaces. Workaround Remove "police cir percent" from child queuing policy "cbwfq- sip". Alternate Workaround: Use a different child-policy with the same.

Define a second policy-map, say "cbwfq-sip1", with the same configuration. Symptom A policy with unsupported queuing features is allowed to attach to sessions. It may cause potential issues that require a reload to recover. Further calls attempted through this port once in this state will result in the following error messages being displayed:.

Jan 8 Workaround Once in this state, the router will need to be reloaded to recover. The use of this command for stcapp controlled FXS ports does not seem to provide any benefit but can lead to the port getting into this hung state. However, when the "software mode"is used, meaning when the two member links 2 T1s are across two different PSs, then the downstream line rate drops down to 2 Megs the most.

Symptom Unable to create sessions and ACLs. Symptom SCCP phone can't act as conferencing controller. Workaround The problem doesn't exists if there is no back-to-back NAT setup. Symptom Trace back is shown when show crypto session is issued. Workaround Use commands show crypto isakmp sa and show crypto ipsec sa. Symptom Crash with the following message:.

Symptom A router reloads continuously on switching off one of the redundant power supplies. Symptom Router may crash while unconfiguring "source template test" in interface configuration mode. Symptom Router may crash and reload intermittently with TLB load or instruction fetch exception.

Workaround The workaround is to temporarily remove the NTP servers from the config with:. Symptom A small memory leak may occur. The user will hear fast-busy signal when attempting to make inbound or outbound calls from or to that port.

Outbound calls to the port in this state may return a error "Previous message in-progress" in response to the CRCX. Workaround Reload the gateway to recover a port once it is in this state. Further Problem Description : Changes applied through CSCsq have been found to greatly reduce the instances of this issue from occurring. But the link on the CPE side will come up.

Symptom Unable to attach service policy to VT when bandwidth is configured in class default. Workaround Configure bandwidth in user defined class and attach to VT. Symptom A router may crash when unconfiguring IPv6. Symptom A router may crash when reattaching a map-class or accessing the time-slots in controller mode or a router may crash when doing an OIR or flapping the peer interface.

Symptom Spurious memory seen in unit test while pinging from generator to reflector. Conditions Occurs while the ping passes through router after applying the crypto map. If the crypto map is not configured then the spurious memory will not be seen.

Once this occurs there is no way to remove the HSRP config. Eventually the router will stop passing all traffic over the interface. Workaround Remove the service-policy from the xDSL interface. Symptom Router may incorrectly drop non TCP traffic.

Note that this may cause higher CPU due to fragmentation and reassembly in certain tunnel environments where the command is intended to be used. Conditions I have observed this issue in Symptom When policy from mlp vaccess is removed, router crashes in queuing enqueue.