From the CLI perspective, when you runnetstat -an | grep ':5062' , the output looks like this: Additionally, the web UU does not show the Mutual TLS port listed under Local inbound ports. 03-19-2019 Select the sub-menu, Audio. At first, this behavior seems peculiar. Two possibilities that could attribute to this behavior are: 1. MP4 Recordings Default in Webex Meetings 40.10In the upcoming October (40.10) update, all-new recordings in Webex Meetings will be stored in MP4 format, either in the cloud or locally as selected at the site or host level, with a video-centric experience. Since the Web-Interface does work, we may consider your Webex-Account as "OK". Question: What can I do about the following error with the Rockstar Games Launcher on PC?. This is problematic because without an audio port assigned, the call will not be able to negotiate that stream. Find answers to your questions by entering keywords or phrases in the Search bar above. Verify the correct device is selected on each list, (Ringer/Alerts, Speaker, Microphone). When you analyze the Expressway-E diagnostic logs, you'll see an error similar to that here: If you analyze this from a Wireshark perspective, you see that the Expressway-E presents its certificate. ', Small business account management (paid user). Given that the Pattern behavior (Progress) is set to Stop, the Expressway-E never considers the Webex Hybrid - to Webex Cloud rule and the call ultimately fails. As observed in the image above, you can see that the Socket test has failed when trying to connect to 64.102.241.236:5062. The Expressway solution typically interfaces with a firewall. When set to a DEBUG level, you can begin to see the information about the certificate inspection that happens, along with what zone trafficgets mapped to. Recordings that have been created while the site was on a newer release will not be able to be played back (streaming) using the player on the lockdown version. As before, it was determined using the Expressway-E Search History that this call was arriving there and failing. Right-click the certificate of interest and select. This error may occur if a Webex site is moved back to a previous lockdown version. After you search TCP Connecting, you'll look for the Dst-port=5062 value. Many times when the solution is deployed, people create a high priority rule to use for the Cisco Webex searches. Here is a snippet of the initial INVITE out to Cisco Webex. In this situation, both of these conditions are met. The call thus enters into the Default Zone andis checked and routed according to the search rules provided for business-to-business scenarios, if business-to-business is configured on Expressway-E.. Using the Call-ID (c030f100-9c916d13-1cdcb-1501a8c0) from the SIP header, you quickly search down all messages associated to this dialog. With this information, you can conclude that the issue is isolated to the Expressway-E receiving the packet; you must troubleshoot the issue from the Expressway-E perspective. If the call originated from a Cisco Webex app and was destined for the premises, the on-premises phone does not ring. After review of this Search rule, you can conclude the following: What this information tells us is that the Cisco Webex Request URI being called would match this rule and if the rule was matched the Expressway would stop searching (Considering) other Search rules. Using the Expressway-E Search History, you can determine that the call made it to the server. If you were troubleshooting a situation where the outbound forked calls to Cisco Webex were failing, you'd want to collect the Unified CM, Expressway-C, and Expressway-E logs. Below is an illustration demonstrating this as shown in the image: Now that you can confirm the Search rule is present and configured correctly, you can look closer at the Search logic that the Expressway is performing to determine if it is affecting the Expressway-E that is sending the 404 Not Found. To test this pattern, we can use the Check pattern function describedin the. The xConfiguration can be leveraged to analyze this as well. In these cases, the fix is to revert the site back to the newer Webex version. To better understand what these values do, you can use the Expressway Web UI to look up the definition of the values. Below is an example. At this point, you can conclude that the Expressway-E is routing the call correctly. This section shows the Expressway performing certificate verification and the mapping to the Webex Hybrid DNS Zone. With this information, you can revisit the scenario presented earlier where the user's Cisco Webex app was receiving two notifications (toasts) when Cisco Webex user Jonathan Robb was making a call. Another way to identify the rule is finding the Pattern String value that is set to ".*@.*\.ciscospark\.com". The Expressway-E is not listening for Mutual TLS traffic and/or not listening for traffic over port 5062. Note: In this situation you will not see Search rules being invoked because CPLs, FindMe, and Transforms are all processed before a Search rule. Take a closer look at the packet capture provided with the Expressway-E diagnostic logging, you can see that the Certificate Unknown error is getting sourced from the direction of Cisco Webex as shown in the image. The Expressway-C sends this 200 OKto Unified CM but Unified CM is only configured to only allow G.729 for this call. The Expressway will do this based on Search Rules. In order toconfirm the configuration of this value, you can go to the Webex Hybrid DNS Zone that was configured for the solution. perhaps the local Client-Application is broken. Have the Expressway-E certificate be signed by an Internal CA and then upload the Internal CA and Expressway-E to the Cisco Webex Control Hub. (highlighted in red as shown in the image). In the Call Service Connect section verify, If the record has been entered correct, click. When thinking about the Cisco Webex to on-premises call flow, Cisco Webex's first logical step is how to contact the on-premises Expressway. If you recall above (Issue 3. By analyzing these log entries, you can typically see all the logic decisions that are being made. Perhaps you may want to check/note/memorize your Client settings first (notification-settings, A/V-settings etc.. ) since they are not stored in the cloud (AFAIK). This document describes the CiscoWebex Hybrid Call Service Connect solution that allows your existing Cisco call control infrastructure to connect to the Cisco Collaboration Cloud so that they can work together. The common translation for this isNo resourceavailable. In this condition, the particular log entry above will not exist. Below are examples of a few different situations where this behavior could present itself: If you're trying to identify a Hybrid Call Service Connect call failure that matchesthis issue, you must get the Expressway logs in addition to Unified CM SDL traces. Routes outbound SIP calls from this zone to a manually specified SIP domain instead of the domain in the dialed destination. You can also use the Hybrid Connectivity Test Tool to aid in troubleshooting. Secondly, visit this handy page: Webex Meetings Web App Known Issues and Limitations. If the DNS Zone were to receive a call that had a RequestURI of pstojano-test@dmzlab.call.ciscospark.com, a typical Expressway DNS Zone would perform the DNS SRV Lookup logic on dmzlab.call.ciscospark.com which is the right hand side of the RequestURI. This can happen intentionally or unintentionally by the use of custom and/or default region settings on the Unified CM. The route header is populated based on the information that the Call Service Aware (Expressway Connector) portion of the solution delivers to Cisco Webex. At first glance, you may think something is wrong with the Expressway-E certificate. In the xConfiguration the, the domain used for the public SIP SRV address, Configure the SIP Destination to be formatted as. Below is a snippet of what you could expect from the Expressway-E diagnostic logging perspective. The new Device Pool had a Region set to RTP-Infrastructure, therefore the new region relationship between the Cisco Webex-RD and Expressway-C trunk was RTP-Devices and RTP-Infrastructure. Compared to a working scenario, you would see that in the working scenario the the search logic is being performed based on the Router Header (Cluster FQDN). So, Unified CM will reject the call due to no available codec. By selecting on the Certificate packet in the Wireshark capture (as illustrated above),you cansee that the certificate was signed by a Public CA and that the full chain was sent to Cisco Webex. (Services > Settings (Under Hybrid Call card) > Upload (Under Certificates for Encrypted Calls)), If you pay close attention to the wording about the Certificates for Encrypted SIP Calls, you see this: 'Use certificates provided from the Cisco Collaboration default trust list or upload your own. Because video has become more prevalent within the enterprise, the size of SIP messages that contain SDP has grown substantially. By default, everything is set to INFO which captures almost everything you need to diagnose a problem. As It was recommended in Windows update I assumed it was a mature product not a beta however it appears I was wrong. Log into the Expressway server(Must be done on both the Expressway-E and C). Has the Expressway-E certificate been signed by one of the Public CAs that Webex trusts? it worked like a charm. At this point, if further isolation is required, you could take a packet capture off the outside interface of the firewall. This particular issue happens to be the only inbound calling scenario that doesn't result in the call dropping. As pictured, you can see this relationship supports AAC-LD which is one of the supported audio codecs for Cisco Webex and so the call will set up correctly. In x12 and later a new zone type was implemented called the "Webex" zone. Unified CM closes the TCP socket then the SIP dialog will time out. This will ensure that the firewall is not manipulating the message in any way. This helps you quickly identify the correct Zone in the xConfiguration. 1. Here are the commands you can run to verify if the SIP Destination exists. Cisco Webex then rejects this TLS handshake with an Unknown CA error message as shown in the image. Immediate Activation. By searching the Expressway-E diagnostic logs for "TCP Connecting" and searching the line item with the tag "Dst-port=5062", you can determine if the connection establishes. * and the Destination Pattern is .*. 2. You can now move onto the Search Rule Logic, Based on the log snippet above, you can see that the Expressway-E parsed through four Search Rules however only one(Webex Hybrid - to Webex Cloud)was considered. Usually, clicking this warning would give you a prompt to reconnect, but . Lastly, you are setting the record types to lookup to SRV records. When you analyze the Mutual TLS handshake, first filter the capture by tcp.port==5062. The challenge with this is that the Deployment Guide for Cisco Webex Hybrid Call Services doesn't explicitly call out the use of port 5061 because some environments do not allow business to business calling. One easy way to find it is to search on the port number you learned from the Expressway-E xConfiguration (SIP Port: "7003"). Generally, troubleshooting is a process of elimination, so the first place to start when experiencing a connection problem is to visit the Cisco service status page. Cisco Webex and the enterprise begin sending and receiving media. The Cisco Webex server that is in direct communication with the Expressway-E is called an L2SIP server. Best Plans & Pricing. Log into the Expressway-E.Step 2. Often with the Expressway solution, when the firewall runs application layer inspection, administrators see undesirable results. Almost every call failure involving outbound on-premises to Cisco Webex results in the same reported symptom: "When I call from my Unified CM-registered phone to another user who is enabled for Call Service Connect, their on-premises phone rings but their Cisco Webex app does not." After this, right-click the first packet in the stream and select Decode Asas shown in the image. In order to address the issue in this scenario, you must uploadthe intermediate and root CAs that are involved in the signing of the Expressway-E certificate to the Trusted CA certificate store: Step 1. To start this meeting, close one of the meetings you have started. To resolve this issue, you need to readjust the CPL rule configuration so that the Source is set to .*@%Webex_subdomain%\.call\.ciscospark\.com. Search rule configuration issues can be bi-directional, because you need Search rules for inbound calls and you need Search rules for outbound calls. For more information on the CPL implementation for Webex Hybrid refer to the Cisco Webex Hybrid Design Guide. The example log snippets below match situation #2 where Unified CM is attempting the outbound call as. Now that you confirmed the TCP Connection established, you can analyze the mutual TLS handshake that happens immediately after. Therefore, the issue should not be related to the Expressway-E certificate. One thing that is unique about the forked outbound call failures to Cisco Webex is that the called party's Cisco Webex app will present a Join button on their app although the client never rings. Now when analyzing this particular call, you can focus on the Expressway-E because you determined (using Search History) that the call has made it this far. Note: If the SIP SRV record you would like to use is already being leveraged for business-to-business communications, we recommend specifying a subdomain of the corporate domain as the SIP discovery address in Cisco Webex Control Hub, and consequently a public DNS SRV record, as follows: Service and protocol: _sips._tcp.mtls.example.comPriority: 1Weight: 10Port number: 5062Target: us-expe1.example.com. Generally a DNS Zone is configured with a Pattern string that is going to catch anything that is not a local domain and send it to the Internet. This capture filtered by using tcp.port==5062 as the applied filter as shown in the image. In this SIP INVITE, you can gather up the Request URI (pstojano-test@dmzlab.call.ciscospark.com), the Call-ID (991f7e80-9c11517a-130ac-1501a8c0), From ("Jonathan Robb" ), To (sip:pstojano-test@dmzlab.call.ciscospark.com), and User-Agent (Cisco-CUCM11.5). This zone pre-populates all the required configuration for the integration with Webex. what certificates are being passed to determine if they are correct. If you couple this with the statements from the Deployment Guide for Cisco Webex Hybrid Call Services, you would find that the Modify DNS Requestmust be set to, Select the Webex Hybrid DNS Zone that has been configured, Based on the log snippet above, you can see that the Expressway-E parsed through four Search Rules however only one, was considered. ), if Cisco Webex doesn't trust the Expressway-E certificate, you must see some type of SSL disconnect reason. Both of these functions are relevant to Hybrid Call Service. The Search Rule had a priority of 90 and was targeted to go to the, . DO NOT reset every device on the CUCM unless you know it is absolutely acceptable to do so. Option 1. In most circumstances, you can leverage the xConfig of the Expressway to better understand the circumstances. You are trying to schedule a meeting through a Webex service that is not yet supported on your mobile device. If the Cisco Webex environment is unable to establish this TCP connection, the call inbound to the premises is subsequently fail. Below is a sample snippet of the INVITE coming inbound to the Expressway-E from this scenario. In the Call Service Connect section enter, In the Call Service Connect section enter the, Get a packet capture off the outside interface of the firewall, In the Call Service Connect section ensure the value entered in the SIP Destination is correct, The SIP FROM field will be formatted with the. The reason this is successful is that thisAlias (cucm.rtp.ciscotac.net) matches the Prefix pattern string of (cucm.rtp.ciscotac.net). Below is the portion of the xConfig that shows us this Expressway-E is using the Local CPL logic. To determine the Device Pool of the Expressway-C SIP Trunk: To Determine the Device Pool of the CTI-RD or Cisco Webex-RD that Anchored the Call: Determine the Region attached to each Device Pool: At this point, if you identify the relationship that is using G.729, you'll need to adjust the relationship to support of the supported audio codecs that Cisco Webex uses or use a different Device Pool that has a Region that supports this. Is the Expressway-E signed by a Public CA that Cisco Webex trusts? Note: Currently, the Expressway/VCS diagnostic log bundle does not contain information about the Expressway Server certificate or Trusted CA list. In addition to the Zone configuration, you can analyze the Search Rules that are configured to pass this call through from one Zone to another. This section shows the Expressway performing certificate verification and the mapping to the Webex Hybrid DNS Zone. If you're having trouble finding the search rule. Webex Meeting App Free Trial includes Cisco Webex Meetings Application with 1000 Participtants Room Capacity. When you analyze this particular capture,you can see that the Expressway-E sends the RST. As before, start out with the initial INVITE that comes into the Expressway-E from the Expressway-C. These devices can be restarted individually to minimize the impact on the environment. Set the value back to 5061 when the analysis is completed as shown in the image. If you recall what we had seen in the xConfiguration theSearch rule configured for Webex Hybrid was namedWebex Hybrid - to Webex Cloud and it wasn't even considered in this Search rule logic above. It communicates to the Expressway-C over SIP TCP port 7003. Error: 'Unknown file format. Expressway-E is Signed by Public CA but Cisco Webex Control Hub has Alternate Certificates Loaded, Issue 6. Select Append CA Certificate.Step 6. In order to troubleshoot this scenario, you'll find it helpful to understand both the call flow and logic that occurr when this type of call is being placed. If you have the xConfiguration, you can see how this zone has been configured. +91 7729921013. Below is a packet capture sample from thescenario where the Expressway-E was not listening over port 5062. This particular issue helps you identify when a firewall's application layer inspection abruptly tore down the connection. Click for details," then you need to reconnect. This can be spotted in the Expressway-E logging by these log entries: The Expressway error message can slightly mislead because it refers to a self-signed certificate in the certificate chain. In order to use Check pattern to test the Hybrid Call Service Connect Route header search rule routing, follow these steps: If the search rules on the Expressway are configured correctly, you can expect to see the Results return a Succeeded message. To resolve this, you'll need to follow these steps: The general rule of thumb with Search rules is the more specific the Pattern string, the lower it can be placed in the Search rule priority list. b. The scenarios below show you how to use the diagnostic logging to identify a CPL misconfiguration. For configuration simplification it's recommended to leverage the Webex zone if you are running x12.5 or later of Expressway code. Essentially the Search Rule is sending an "Any" alias that comes in through the Hybrid Call Services' DNS zone and passing it to the zone above, Hybrid Call Service Traversal. Based off this xConfiguration the DNSOverride Override is set to Off, therefore the DNSOverride Name would not take effect. If you were to change these values to specify the correct information, the DNS SRV lookup logic would be entirely different. Thanks for your quick response. For non-SSO environments, open Phone Service settings and sign in again. This handshake, as mentioned earlier,should come shortly after the TCP Connection is established over port 5062. Then, type "appwiz.cpl" inside the text box and press Enter to open up the Programs. After the SIP dialog times out, Cisco Webex will send an Inbound SIP 603 Decline message to the Expressway-E as noted in the log sample. Video-Centric Network-Based MP4 Recordings in Webex Meetings and Webex Events, Install the Cisco Webex Network Recording Player for Advanced Recording Format Files, Announcements for the Cisco Webex Meetings Suite. 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