71301X Questions and Answers

When installing the identity certificate and encryption key files on the Avaya Session Border Controller for Enterprise (ASBCE), you need to follow this rule: The filename of the identity certificate (.pem or .crt file) must be different from the filename of the encryption key (.key file). An identity certificate is a file that contains information about the identity and public key of an entity, such as a server or an endpoint. An encryption key is a file that contains information about the private key of an entity, which is used to encrypt and decrypt data. The identity certificate and encryption key files are obtained from a Certificate Authority (CA) or generated by yourself using tools such as OpenSSL. When installing these files on the ASBCE server, you need to make sure that they have different filenames, otherwise they will overwriteeach other and cause errors. For example, you can name them as sbce-cert.pem and sbce-key.key respectively.

To access the TSAPI Test from the Application Enablement Services (AES) menu, you need to select Utilities. The TSAPI Test is a basic application for making a call using TSAPI, which is a high-level API for CTI applications based on CSTA I standard. TSAPI allows access to the third party call control capabilities of CM through AES. The TSAPI Test application can be used to verify that the TSAPI client is correctly installed and working on AES. If the TSAPI Test application fails to make the call, an error message is provided to aid in troubleshooting the cause of the failure. To access the TSAPI Test from the AES menu, you need to follow these steps:

• Log in to the web interface of AES using your username and password.
• Click on Utilities on the left side menu.
• Click on TSAPI Test under Utilities.
• Enter the parameters for making a call, such as device name, destination number, user ID, and password.
• Click on Make Call.

Before obtaining a server identity certificate from a Certificate Authority (CA) for the installation on the Avaya Session Border Controller for Enterprise (ASBCE), you need to generate a Certificate Signing Request (CSR). A CSR is a file that contains information about the identity and public key of the ASBCE server, as well as a digital signature that proves the ownership of the public key. A CSR is used to request a server identity certificate from a CA, which is an entity that issues and verifies certificates. The CA will check the information in the CSR and issue a server identity certificate that contains the same information and public key, as well as the CA’s signature and validity period. The server identity certificate is used to authenticate the ASBCE server to other entities that communicate with it using HTTPS or SIP over TLS. To generate a CSR for the ASBCE server, you can use tools such as OpenSSL or Keytool, or use the ASBCE web interface or CLI.

Avaya Aura® Presence Services uses different ports for different purposes. Port 5222 is used by endpoints like Avaya one-X® Communicators, Avaya Equinox®, or Avaya IX™ Workplace to establish client-to-server XMPP connections with the Presence Services snap-in on the Avaya Breeze® server. Port 5269 is used for server-to-server XMPP connections with the third-party XMPP servers, such as Google Talk or Jabber. These ports enable the presence and instant messaging features for the users34

After running the Install wizard on the Avaya Session Border Controller for Enterprise (ASBCE), you add a Public (External) IP address to the Bl interface. The Bl interface is a logical interface that represents the external network port on the ASBCE server. The Bl interface is used to communicate with external entities, such as SIP service providers or remote workers. If you try to ping the Bl interface IP address from a PC in the same subnet, but it fails, the first step to resolve the problem is to navigate to Network & Flows > Network Management > Interfaces and enable the Bl interface. By default, the Bl interface is disabled after the Install wizard. You need to enable it and assign it to an External Zone, which is a logical grouping of interfaces that defines the security and routing policies for the external network

When configuring the Avaya Call Park and Page snap-in, the Call Park Extension Group attribute is used to specify the extensions that can be used to park calls. The format of the Call Park Extension Group attribute is as follows:

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The location ID is a numeric value that identifies the location where the Call Park and Page snap-in is deployed. The number of digits is the number of digits in each extension. The extensions are the actual extensions that can be used to park calls. For example, 3(1):4000,4001,4002 means that the Call Park and Page snap-in is deployed in location 3, each extension has one digit, and the extensions are 4000, 4001, and 40021

When deploying the Avaya Aura® Presence Services on Avaya Breeze®, you can check the status of the Presence Services snap-in in System Manager, under Elements > Avaya Breeze> Service Management > Services. The status indicates the state of the snap-in on the Avaya Breeze® cluster. The status Active means that the snap-in is running and ready to support Presence and IM. The other statuses are either intermediate or error states that indicate that the snap-in is not fully functional or operational.

An Application Rule is a type of Domain Policy Rule in the Avaya Session Border Controller for Enterprise (ASBCE) that allows setting a limit to the maximum audio sessions per endpoint, enabling the ASBCE to reject the call when this limit is reached. A Domain Policy Rule is a configuration object that defines the security and quality of service policies for SIP domains that are managed by the ASBCE server. There are four types of Domain Policy Rules: Security Rule, Border Rule, Application Rule, and Media Rule. An Application Rule is a Domain Policy Rule that defines the application-level policies for SIP domains, such as call admission control,bandwidth management, session timers, and session limits. An Application Rule can include a parameter called Max Audio Sessions Per Endpoint, which specifies the maximum number of concurrent audio sessions that an endpoint can have within a SIP domain. If an endpoint tries to initiate or receive more audio sessions than this limit, the ASBCE server will reject the call with a 403 Forbidden response.

If the customer requires High Availability (HA) for the Avaya Session Border Controller for Enterprise (ASBCE), the minimum number of servers or virtual machines that are required is 2. High Availability (HA) is a feature that provides redundancy and fault tolerance for the ASBCE server by deploying two ASBCE servers in a pair, either in the same location or geographically dispersed. The two ASBCE servers act as a single logical entity and share a common configuration and license. One ASBCE server is designated as the active server and handles all traffic, while the other ASBCE server is designated as the standby server and monitors the status of the active server. If the active server fails or becomes unreachable, the standby server takes over and becomes the new active server, ensuring continuity ofservice. The two ASBCE servers synchronize their configuration and state information using a dedicated HA link between them

To integrate Avaya Aura® Communication Manager (CM) with Application Enablement Services (AES), and enable the TSAPI link, you need to perform two configuration steps on CM: Configure IP Services and Create a CTI link. These steps are necessary to establish a connection between CM and AES using ASAI protocol, which is a proprietary protocol that provides access to various CTI features of CM. A TSAPI link is a logical connection between CM and AES that allows TSAPI applications to use ASAI features through AES. To configure IP Services and Create a CTI link on CM, you need to use these screens:

• The “ip-services” screen: This is a screen that allows you to create and manage IP services on CM, such as ASAI-IP or C-LAN. You can access this screen using the System Access Terminal (SAT) interface of CM. On this screen, you need to specify a service type, node name, local node, local port, remote node, remote port, remote domain name, service state, and service link for each IP service. For integrating with AES, you need to create an ASAI-IP service that points to the node name of an AES server.
• The “cti-link” screen: This is a screen that allows you to create and manage CTI links on CM, which are logical connections between CM and CTI servers, such as AES. You can access this screen using the System Access Terminal (SAT) interface of CM. On this screen, you need to specify a name, number, type, and password for each CTI link. For integrating with AES, you need to create a CTI link of type ADJ-IP that matches the switch CTI link number on AES.

When integrating the Application Enablement Services (AES) with the Avaya Aura® Communication Manager (CM), you need to configure a Switch Password in two places: on the “cti-link” screen in CM, and in “Switch Connections” on AES. TheSwitch Password is a password that is used to authenticate the communication between CM and AES. CM and AES use a protocol called Adjunct Switch Application Interface (ASAI) to exchange information and commands related to Computer Telephony Integration (CTI) applications. ASAI requires a Switch Password to establish a secure connection between CM and AES. To configure the Switch Password, you need to use these two screens:

• The “cti-link” screen in CM: This is a screen that allows you to create and manage CTI links, which are logical connections between CM and CTI servers, such as AES. You can access this screen using the System Access Terminal (SAT) interface of CM. On this screen, you need to specify a name, number, type, and password for each CTI link. The password is the Switch Password that will be used by CM to authenticate AES.
• The “Switch Connections” screen on AES: This is a screen that allows you to create and manage switch connections, which are logical connections between AES and switches, such as CM. You can access this screen using the web interface of AES. On this screen, you need to specify a name, IP address, port, type, and password for each switch connection. The password is the Switch Password that will be used by AES to authenticate CM.

A Survivable Communication Manager (CM) is a Communication Manager instance that provides local call processing and trunking capabilities for remote sites or branches in case of a WAN outage or loss of connectivity with the core servers. A Survivable CM monitors thestatus of the main CM by sending and receiving heartbeat messages at regular intervals. A heartbeat message is a SIP OPTIONS request that tests the availability of the main CM. If the Survivable CM does not receive a response to its heartbeat message within a specified timeout period, it assumes that the main CM is down and triggers a failover process. During the failover process, the Survivable CM accepts IP phone registration requests from the local endpoints and puts the configured IP trunks in a working condition, allowing the remote site or branch to continue making and receiving calls

In some deployments, you can enable a feature called “Stream Users Over Transport Link” in the Signaling Interface used for the Avaya Aura® Session Manager (SM) on the Avaya Session Border Controller for Enterprise (ASBCB). This feature allows reusing the same TCP connection to SM for all SIP messages related to Remote Workers registered with SM through ASBCB. A Signaling Interface is a configuration object that defines how ASBCB handles SIP signaling with other entities, such as endpoints or servers. A Signaling Interface can include parameters such as source and destination IP addresses, ports, protocols, encryption modes, authentication modes, and timers. The “Stream Users Over Transport Link” parameter is an option that can be enabled or disabled in the Advanced tab of the Signaling Interface configuration screen. When this option is enabled, ASBCB will use the same TCP connection to SM for all SIP messages related to the same Remote Worker. This can reduce the number of TCP connections and improve the performance and scalability of ASBCB and SM.

The Server ID is a numeric value that identifies each Communication Manager server in the network. The Server ID is used for licensing, administration, and synchronization purposes. Every CM server in the network needs to be assigned a unique Server ID, including servers in a duplex pair. A duplex pair is a configuration where two CM servers are connected by a dedicated link and act as a single logical entity, providing high availability and redundancy for call processing. The Server ID of each CM server in a duplex pair must be an even/odd pair (N, N+1), where N is an even number. For example, if one server in a duplex pair has Server ID 2, theother server must have Server ID 3. The Server ID can be configured during the installation or post-installation of Communication Manager, using the set server-id command

The steps for deploying the Avaya Presence Services snap-in are as follows:

• Download the Presence Services snap-in software bundle from the Avaya Support website.
• Log in to System Manager and navigate to Elements > Inventory > Manage Elements.
• Select the Breeze® cluster where you want to deploy the Presence Services snap-in and click Edit.
• In the Snap-ins tab, click Add Snap-in and browse to the location where you saved the Presence Services snap-in software bundle.
• Select the Presence Services snap-in file and click Open.
• Click Commit to load the Presence Services snap-in to System Manager.
• Navigate to Elements > Inventory > Cluster Administration.
• Select the Breeze® cluster where you loaded the Presence Services snap-in and click Manage Snap-ins.
• In the Snap-ins tab, select the Presence Services snap-in and click Activate/Upgrade/Downgrade.
• Click OK to load the Presence Services snap-in into the Breeze® cluster