For this server-to-server communication, TLS connections between the Unified CM clusters' nodes are established and the remote peers' certificates are validated during TLS connection setup. Figure 2-6 illustrates the architecture of an on-premises deployment that includes Cisco Unified Communications Manager IM and Presence. See the Conferencing chapter for more details on conferencing resources. From the Enable Multi-Device Messaging drop-down list, choose Enabled. The services include IM and Presence, directory, CTI, voicemail, and conferencing. For more information on international numbering plans, see the International Numbering Resources page of the ITU-T at https://www.itu.int/en/ITU-T/inr/Pages/default.aspx. Standard protocol interfaces, including Telephony Application Programming Interface (TAPI), Java Telephony Application Programming Interface (JTAPI), Simple Object Access Protocol (SOAP), Q.SIG, H.323, Media Gateway Control Protocol (MGCP), and Session Initiation Protocol (SIP) are available to support third-party applications. The Unified CM architecture enables a group of server nodes to work together as a single call processing entity. Table 2-17 shows how class of service International for a user in site SJC would be defined based on the partition set previously defined (see Table 2-12 and Table 2-13 ). Table 2-18 Classes of Service National and Internal for SJC User, DN Directory URI URI ESN onNetRemote SJCIntra UStoE164 USPSTNNational USEmergency, DN Directory URI URI ESN onNetRemote SJCIntra UStoE164 USEmergency. A Service profile specifies which UC services to use. If video conferencing capabilities were the exception, we could decide to use only one device pool per site with MRGL set to Audio and then on the few video-enabled devices set the MRGL to Video in the device configuration. The plan is to use the same site code for DIDs and non-DIDs, but the first digit of the extension for non-DIDs is different from the first digit of the DID extensions. Figure 1-3 shows IP phones that logically register with one of the CUCMs in the cluster. The local CUCM database is a Lightweight Directory Access Protocol (LDAP)-compliant database (LDAPv3) component in the IBM Informix Database Server (IDS). Allows sharing of site-specific settings between all RTP gateways. All call processing subscribers and IM and Presence nodes need access to the Common Identity service at idbroker.webex.com to obtain OAuth access tokens. We want to make sure to balance the load over all gateways. The address configured in this intercluster peer is the IP address of the remote Unified CM cluster IM and Presence publisher node. The Cisco CUCM (Cisco Call Manager) is the core of Cisco's cloud collaboration infrastructure and it brings people together in anytime and anywhere on any device with single architecture for voice, video and data. Table 2-4 Unified CM IM and Presence Node Service Activation. Also make sure to set the Advertise Globally via ILS option on all URIs you have provisioned in addition to the ones created automatically. From the example in Table 2-51 we can see that, following the same schema, we would need to provision two device pools per site to be able to differentiate between devices with and without video conferencing capabilities. The most common options are +E.164 or E.164. . The chapters focus on design-related aspects rather than product-specific support and configuration information, which is covered in the related product documentation. Insufficient bandwidth for calls to other destinations such as gateways and trunks does not trigger AAR. With four or more clusters, deploy Cisco Unified CM Session Management Edition (SME) to centralize the dial plan and trunking and to avoid the complexity of a full-mesh SIP trunk topology. If calling and called parties are received in E.164 format, then the easiest way to transform to +E.164 is to simply configure a prefix "+" on the SIP trunk in Unified CM or on the trunk's device pool. The call on the EMEA cluster is extended to SIP trunk ST_UCM_EMEA, dereferencing the route list RL_UCM_EMEA the matched SIP route pattern us.route points to and route group RG_UCM_EMEA (see Table 2-70 ). The external phone number mask is not referenced anywhere in the provisioned dial plan and can be set to anything. Cisco Unified CM SME is not covered in this document. If you want SIP phones to get their date and time from NTP servers, then in the date/time group you prioritize the phone NTP references, starting with the first server that you want the phone to contact. The following documents describe the current Preferred Architecture. The status information includes the user's communications device availability. Preferred Architecture for Cisco Collaboration 12.x Enterprise On-Premises Deployments, CVD, View with Adobe Reader on a variety of devices. Incoming calls on trunks need to support +E.164, ESN, and URI dialing. US specific habitual PSTN dialing to national destinations in the US. Holds +E.164 route patterns required to provide PSTN access to international destinations. Migrate to a familiar communications user experience in the cloud, avoiding costly change management and employee retraining. Media processing functions include mixing multiple streams to create one output stream (conferencing), passing the stream from one connection to another (media termination point), converting the data stream from one compression type to another (transcoding), streaming music to callers on hold (music on hold), echo cancellation, signaling, voice termination from a TDM circuit (coding/decoding), packetization of a stream, streaming audio (annunciation), and so forth. Signaling and device control: CUCM sets up all the signaling connections between call endpoints and directs devices such as phones, gateways, and conference bridges to establish and tear down streaming connections. From a network perspective, the platform servers should be connected to multiple upstream switches. Note Only non-default Service Parameter and other configuration field values are specified in this document. With these LRG definitions, dedicated route lists can be created for both "normal" PSTN calls and emergency calls so that different PSTN resources (gateways) are used for emergency calls than for normal PSTN calls. To configure SRST, you must perform the configuration on both Unified CM and the SRST router. Example 2-5 shows a jabber-config.xml file to enable URI dialing for Jabber clients. In that case either use Domain Controllers for authentication (beware of the limitations listed above) or update the Global Catalog to include the employeeNumber attribute. Configuring GDPR requires the following steps in addition to activating ILS as described in the previous section: In this document we assume that URIs for users are automatically provisioned based on the directory URI synchronized for each user from the email attribute of the corporate directory (see Table 2-43 ) and the primary extension configure for the user. Make sure that the SIP route string for each cluster is unique to allow for deterministic routing based on these route strings. In this scenario, a load balancer is required to send the requests to both Unified CM nodes. With SRST, if the WAN fails, phone calls can still be made within the remote site or out to the PSTN. Describe the characteristics of the CUCM database and how it provides redundancy. PSTN E.164 numbers for these services have to be reserved from the DID ranges assigned by the PSTN providers. 4. When using multiple LDAP synchronization agreements, you have to make sure that the LDAP filters used by these synchronization agreements are disjunct so that no single user is matched by both filters. You must be a registered Cisco partner to access the documents on this page. Information has been at our fingertips for a long time, but UC enables the sharing of this information to create knowledge and value. This parameter enables the generation of call detail records (CDR). Refer to Microsoft Active Directory documentation for details. The IM and Presence publisher handles IM and presence requests, just like the IM and Presence subscribers do, so the first subcluster consists of the IM and Presence publisher and one IM and Presence subscriber. The LDAP filters in Table 2-40 use the beginning of the phone numbers as criteria to determine whether the individual user is a local or a remote user. The mid-market or Small to medium deployments with up to 1,000 users is no longer differentiated from the Enterprise market segment in the Preferred Architectures. Route groups combine trunks with common characteristics. When you activate ILS on the first Unified CM cluster, no registration server information is available, so the input in that pop-up should be left empty. To achieve the intended forced on-net routing (calls to any on-net destination dialed using any of the supported numeric dialing habits has to be routed on-net), the recommended dial plan design uses a two-step routing approach. 24.08.2016 15:01:47. The enterprise DNS needs to be set up so that name resolution is reliably available for all clients and servers in the network. Holds dialing normalization patterns to transform site-specific abbreviated intra-site dialing to DIDs, or non-DIDs to +E164 or ESN, respectively. To provide our partners and customers with expert design guidance and best practices for deploying collaboration solutions, we have developed and tested Preferred Architectures (PAs) for the following deployment scenarios: Cisco Preferred Architectures (PAs) provide tested and recommended deployment models for the Enterprise market segment based on common use cases. Video calling with Cisco Unified Video Advantage is as easy as dialing a phone number. Distinguished name of an AD account with read access rights to all user objects in the desired user search base. During this onboarding process a machine account is created for the specific cluster in the Cisco Collaboration Cloud, and an OAuth refresh token is issued for the cluster. Add all SIP trunks to all SIP gateways in site RRP. Here we need to consider how to treat calling party information for a call originating from a non-DID or a call originating from a DN that is not part of the DID range associated with the given gateway. Example 2-1 DNS SRV Record for UDS-Based Service Discovery. To support other countries, and thus other country-specific dialing habits, a country appropriate xxPSTNNational partition (where xx represents the country; for example, DEPSTNNational, UKPSTNNational, ITPSTNNational) also needs to be provisioned, which then holds the +E.164 route patterns required to provide PSTN access to national destinations of that country. The +E.164 alternate number is not advertised via ILS. For more information about SME, refer to the Cisco Collaboration SRND. EA Collab - Cust Collab. The length of the site code and extension is a trade-off between providing a large enough number space and keeping the ESN dialing as short as possible. The user's availability status indicates whether or not the user is actively using a particular communications device such as a phone. Table 2-62 Route List for Intercluster Trunk to Another Unified CM Cluster. A Service Profile is then associated to each user. Cisco solutions, available from Insight, make communications secure and accessible. Makes sure that URI and numeric reachability information is exchanged with remote clusters. Management of end-user accounts is then accomplished through the interface of the LDAP directory and Unified CM Administration. For these endpoints no DIDs (E.164 numbers) exist, and thus an address format other than +E.164 is required for these endpoints. In addition, proper WLAN infrastructure design requires understanding and deploying QoS on the wireless network to ensure end-to-end voice and video quality on the entire network. For a Unified CM cluster with two pairs of Unified CM call processing subscribers named ucm1a.ent-pa.com and ucm1b.ent-pa.com in the first pair and ucm2a.ent-pa.com and ucm2b.ent-pa.com in the second pair, with ucm1a and ucm2a being the primary Unified CM call processing subscribers in each pair, Table 2-46 lists the Unified CM groups to be provisioned. For better readability, the LDAP filter strings in Table 2-40 are separated into multiple lines, with the indentation levels reflecting the structure of the LDAP filter strings. The Cisco IOS configuration piece shown in Example 2-2 demonstrates how to force a single ISDN plan and type for calling and called party information to be sent to the PSTN through a given POTS dial-peer. Figure 2-8 Example Dialing Normalization Translation Pattern. So PSTN resources of one site are selected via the Standard Local Route Group configuration. To allow for a very simple provisioning of Unified CM presence without further differentiation of presence access, a single CSS needs to be provisioned that allows access to all possible on-net destinations. The same calling party transformations as described before in section on Outbound Calls: Called and Calling Number Transformations on ISDN Gateways and summarized in Table 2-33 can be used. There can be only one publisher per cluster. Hence, initially you need to configure the device pool and leave the LRG mapping set to . Example: us-cm-sub1.ent-pa.com us-cm-sub2.ent-pa.com. Associate the UC services to a Service Profile. After successfully onboarding the cluster, you must restart the XCP Router Service on all Unified CM IM and Presence nodes in the cluster. Subscribing to the Flex Plan gives you the freedom and confidence of moving to the cloud at a pace that meets your business objectives, using OpEx budgets, while retaining capital for more strategic initiatives. The default digit stripping behavior of Cisco IOS will then automatically strip the leading "*". 4. Remote clusters trying to reach any of the destinations advertised by this cluster will establish the route to this destination by matching the learned SIP route string against SIP route patterns provisioned on the remote cluster. Remember that for SIP trunks the setting for number type Unknown Number is relevant on the device pool level. Figure 1-4 illustrates a user at phone A placing a call to phone B. Explicit pattern for national destinations in the US. Streamlined deployment empowers you to expand access and accelerate the application experience across all branches of your organization. Other key aspects of the network architecture include selection of the proper hardware and software components, system security, and deployment models. No site-specific video gateways exist. 3. Add or remove other access control groups as needed, but keep in mind that without Standard CCM End Users, the users will not be able to log into the self-service portal. Cisco Collaboration Preferred Architectures. This chapter describes the call control function for the Cisco Preferred Architecture (PA) for Enterprise Collaboration. In that case uncheck the Use Device Pool Called/Calling Party Transformation CSS options in the Outbound Calls section on the gateway configuration page, and set the called or calling party transformation CSS there. Only a single member: the actual trunk to the remote Unified CM cluster. Call control layer: The call control layer provides for call processing, device control, and administration of the dial plan and features. Given the critical nature of call processing operations, it is important to design unified communications deployments to ensure that call processing systems are scalable enough to handle the required number of users and devices and are resilient enough to handle various network and application outages or failures. When integrating a deployment of Unified CM and Unified CM IM and Presence Service with Apple Push Notification service (APNs), you can use Apple's cloud-bases Push Notification service to push notifications for voice and video calls and instant messages to Cisco Jabber for iPad and iPhone clients that are running in the background. To simplify and provide consistent calling party presentation for all possible call flows, all calling party information received from outside networks such as the PSTN is normalized to +E.164 as discussed earlier. After designing and implementing the network infrastructure properly, you can add network and application services successfully across the network, thus providing a highly available foundation upon which your Unified Communications and Collaboration services can run. Because all call routing on Unified CM is based on +E.164 numbers for all incoming calls arriving at Unified CM, we need to make sure that called party information is globalized to +E.164 from the format received on the link from the provider. Follow the steps outlined in the section on Server Certificate Generation and Management in the Security chapter. Whenever the same settings for the configuration options listed in Table 2-50 need to be applied to a group of devices, we recommend creating a device pool with these settings and then assigning all devices to this device pool. To create a fully meshed presence topology, each Cisco IM and Presence cluster requires a separate peer relationship for each of the other Cisco IM and Presence clusters within the same domain. When LDAP synchronization is enabled, the local Unified CM database is still used, and additional local end-user accounts can be created. In the above case of a German user logging into a US phone, that user's German PSTN dialing habits will be supported together with the US specific emergency dialing habit 911. As mentioned earlier in the section on Outbound Calls: Called and Calling Number Transformations on ISDN Gateways, calling and called party information sent and received on ISDN trunks is a triplet consisting of numbering plan, number type, and number. Directory synchronization allows for centralized user management. Subscriber nodes subscribe to the publisher to obtain a copy of the database information. Holds all +E.164 directory numbers and other local on-net +E.164 destinations (for example, pilot numbers reachable from the PSTN). Table 2-38 shows an example of the country specific phone localization calling party transformation patterns that would need to be provisioned for Italy and Germany. Cisco IOS Survivable Remote Site Telephony (SRST) provides highly available call processing services for endpoints in locations remote from the Unified CM cluster when the WAN links are down. Enabled for All Devices Except Recording-Enabled Devices. Configure the device pool for the PSTN gateway without defining the LRG mapping in the device pool. Cisco Unified CM groups allow you to define groups of Unified CM instances in the cluster that determine which Unified CM instances should be used by devices to register to the Unified CM cluster. Table 2-43 LDAP Synchronization Agreement for Local Users. In addition to the pattern classes represented by these global partitions, several site, country, or class-of-service specific pattern classes are required, as show in Table 2-13 . This enables OAuth grant flow authentication. All SIP trunks to other components including conferencing media resources, gateways, and other components are terminated on Unified CM so that Unified CM can orchestrate access to all of those components. A PSTN trunk would not need access to ESN patterns, dialing normalization patterns, or URIs because only a single number format is supported by the PSTN, and this is normalized to +E.164 on ingress. Deploy the required number of virtual machines on your compute infrastructure using the appropriate Cisco provided OVA template files. We use the video gateway in site SJC. Unified CM and IM and Presence nodes should be deployed in a highly available infrastructure. The dialed destination can be on-net or off-net. Table 2-24 Inbound CSS for Trunks to Other Unified CM Clusters. The Cisco UC system integrates the following major communications technologies: IP telephony: IP telephony refers to technology that transmits voice communications over anetwork using IP standards. Simplify purchasing with a Cisco Collaboration Flex Plan and take advantage of trade-in incentives and migration programs. Deploying this capability helps ensure more effective compliance with legal or regulatory obligations, thereby reducing the life and liability risks related to emergency calls. These translations transform called party information from *E.164 to +E.164 and the calling party information from E.164 to +E.164. The classes of service chosen for this design are only examples. Note The numbering plan in Italy is variable length and this pattern needs to cover this. Depending on the type of connected system, the parameters configured on each SIP trunk differ slightly. Cisco UCM Cloud to Webex Calling: Head-to-Head . To extend presence and instant messaging capability and functionality, these standalone clusters can be configured for peer relationships for communication between clusters within the same domain. Partition for Enterprise Alternate Numbers. Holds dialing normalization translation patterns to transform US specific habitual PSTN dialing (for example, 91- <10 digits>) to +E.164. The +E.164 alternate number is not added to a local route partition because the directory number itself already is a +E.164 number. These resources include access to a large pool of agents and multiple channels of communication and customer self-help tools. Table 2-39 LDAP System Settings for Microsoft Active Directory. Immediately after installing the Unified CM cluster, perform the following basic configuration tasks: To allow for correct certificate validation and to ensure that references to Unified CM cluster members can always be resolved correctly, set the node names under System/Server in the Unified CM administration GUI to fully qualified domain names (FQDNs) for all cluster members. The information advertised and learned through GDPR enables deterministic intercluster routing for these dialing habits: GDPR uses Intercluster Lookup Service (ILS) as the transport medium, therefore setting up ILS between all Unified CM clusters is required for multi-cluster deployments. Both prefixes and calling and called party transformations can be defined either on the trunk level or on the device pool level. The section on Route Lists Using Local Route Groups introduces route lists for PSTN access using local route groups only. Central PSTN access is in RCD as well. 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