CISCO-WAN-ANNOUNCEMENT-MIB: View SNMP OID List / Download MIB

The MIB module is defined to configure the Announcements feature on the Media Gateway Card. The Media Gateway Card will have the capability to play pre-recorded local announcements in switched VoIP solutions only. Under the control of a call agent, announcements can be played in either direction over existing connections (calls) or towards the Time Division Multiplexed (TDM) network on a TDM endpoint that is terminated on the the Media Gateway Card. A large number of different announcements may be cached on the Media Gateway Card for immediate play out. A persistent announcement store, called the Announcement file server, will exist in the packet network and hold all the announcements in the network. Announcements will be downloaded on demand as announcement files from the configured announcement store. Downloaded announcement files will be stored on the Media Gateway Card as either 'permanent' or 'dynamic' announcement files. Permanent files on the Media Gateway Card are exempt from being refreshed, replaced, or removed without explicit provisioning actions. Dynamic announcement files will not persist across resets. Permanent announcement files will be reloaded, if possible, following a reset. Dynamic announcement files are automatically 'aged'. 'Aged' files are re-fetched from the Announcement file server. Dynamic Announcement files can be replaced on the Media Gateway Card if the Announcement memory on the card is full and additional Announcement files are to be downloaded. The file(s) to be replaced will be determined according to some Least Recently Used(LRU) algorithm. Announcements can be played over established connections and unconnected TDM endpoints in any encoding supported by the Media Gateway Card in its current configuration. Announcement files must be encoded in G.729a to be played on G.729ab connections or, if G.729ab has been chosen as the preferred codec, unconnected endpoints. The Announcement file server will reside on an IP network reachable from the Media Gateway Card using TFTP. The user will configure the Announcement file server node name on the the Media Gateway Card. The Announcement file server will have a 'main' file directory for Announcements. If the Announcement prefix path is configured to begin with a '/' then the directory is absolute. If the prefix path is configured to begin without a '/' then it will be relative to the default TFTP server directory. If no prefix path is configured then the Announcement 'main' directory and the TFTP default directory will be the same. The user must configure subdirectories within the main Announcement directory for each encoding that Announcements may be played in. These subdirectories must be of the following names: 'g711u', 'g711a', 'g726_40k', 'g726_32k', 'g726_24k', 'g726_16k', 'g729_a', 'g7231_high_rate', 'g7231_a_high_rate', 'g7231_low_rate', 'g7231_a_low_rate'. The Media Gateway Card maintains an Announcement cache in resident memory. The cache is populated on demand with dynamic files or provisioned with permanent files. That is to say that when an Announcement is requested to be played it will first be retrieved from the Announcement file server and placed in the on-board Announcement cache. Subsequent requests for the same Announcement will not require retrieval of the Announcement file from the Announcement file server. Note that an Announcement in one encoding is a different file than the same Announcement in a different encoding. The 'Announcement aging' policy is provisionable for dynamic files. Once a dynamic Announcement has 'aged' in the on-board cache it will be 'refreshed' by being retrieved again from the Announcement file server. The age time determines the maximum time before an updated Announcement file is automatically propagated to the card. Shorter age times will result in more frequent file server access. Changing the 'age' time does not affect the age times of dynamic Announcement files currently loaded. However, once these files are refreshed, they will then use the new 'age' time. Announcements may also be provisioned as 'permanent'. A permanent Announcement will be fetched from the Announcement file server and 'frozen' in the Media Gateway Card Announcement cache. Permanent Announcements will be excluded from aging (and being automatically refreshed) and excluded from being replaced if the Announcement cache becomes full. Permanent Announcements can only be removed from the cache explicitly by user through command line interface or through a Network Manager. If the Media Gateway Card is reset, permanent Announcements will be re-fetched from the Announcement file server as soon as the card becomes active. The Announcement encoding must be specified when provisioning permanent Announcements.

This object records the maximum size of the Announcement table. This number consists of the maximum number of Announcement file names that may be kept on the Media Gateway Card.

This object records the name of the Announcement file server. The individual characters in this name may be alphanumeric characters, forward slashes, backward slashes, periods, dashes, and underscores, but no embedded spaces. Also, the last character of the name must not be a dash or a forward slash. The default value for this MIB object is a 'null'. If the Announcement file server name is not configured, Announcements cannot be downloaded. The 'null' value of this field is a single space character, which may be set to this value by setting this MIB object to the single character space string (' '). Alternatively, for computing systems that cannot handle single character space strings, the single character ('_') underscore string may be used as an alternative 'null' value, which would then be converted internally to the single character space string. Before the Announcement file server name may be successfully configured, the name must first be added to the list of domain names (mgDomainName) contained in the mgDomainNameTable(defined in CISCO-WAN-MG-MIB MIB). If the domain is configured for internal resolution, then the file server name must be asssigned an IP address to be put in the mgcResolutionTable(defined in CISCO-WAN-MG-MIB MIB).

This object records the time in minutes for a dynamic Announcement file in the cache to age. The Age time is the configurable number of minutes before a dynamic Announcement file in the Media Gateway Card Announcement cache will be invalidated and refreshed from the Announcement file server. An Announcement file starts 'aging' as soon as it is brought into the cache from the file server. Zero (0) time specifies that the age time is infinite, so that no aging will occur. But, unlike a permanent file, a file with aging of 0 may be replaced.

This object records the codec to be used for playing Announcements on an unconnected TDM endpoint. The default will be 'g711u' for a T1 Media Gateway Card, or will be 'g711a' for an E1 Media Gateway Card.

This object records the directory path under the default TFTP directory in the Announcement File server for announcement files. The purpose of this MIB object is to specify the 'main' directory for Announcements if it is to be different than the default TFTP directory. The individual characters in this name may be alphanumeric characters, forward slashes, backward slashes, periods, dashes, and underscores, but no embedded spaces. Also, the last character of the name must not be a dash or a forward slash. If this MIB object is a 'null' value it will not cause any directory path string to be inserted with the cwAnnFileName MIB object. The 'null' value of this field is a single space character, which may be set to this value by setting this MIB object to the single character space string (' '), or alternatively, for computing systems that cannot handle single character space strings, to the single character ('_') underscore string, which will then be converted internally to the single character space string.

This object records the time for a dynamic play Announcement request to be serviced. If the Announcement subsystem cannot start playing the Announcement within cwAnnReqTimeout seconds since the request was received, the play request will be aborted. Zero (0) time specifies that the timeout time is infinite, so that no timeout will occur.

This table contains configuration information about different permanent Announcements that are stored on the Media Gateway Card. This table may contain up to the maximum number of permanent Announcement file names which is given by the value of cwAnnMaximumSize.

An entry in this table consists of configuration information for a specific Announcement file name.

This object serves as index to this table.

This attribute specifies the status of this entry regarding to the permanent Announcement file name in cwAnnFileName MIB object: 'loaded(1)': successfully downloaded permanent file. 'loading(2)': in process of downloading a permanent file. 'invalidFile(3)': file on File server is too large or corrupted. 'loadFailed(4)': timeout when trying to download a permanent file. When this entry is created with a valid permanent Announcement file name in the cwAnnFileName MIB object, this permanent status is set to 'loading(3)' while background activities attempt to download the permanent file from the Announcement FTP server. If this attempt is successful, the permanent status is set to 'loaded(3)', but if this process fails the permanent status is set to one either 'invalidFile(3)', or 'loadFailed(4)'. Once an entry is loaded, if a subsequent card reset occurs the Media Gateway Card will attempt to restore all of the configuration information by doing its normal download of the latest MIB data base from the PXM (Processor Switch Module) hard disk, set all 'loaded (2)' MIB objects to 'loading (3)', and then do an background process to retrieve all of the Announcement files from the Announcement file server, since this information is not contained in the PXM. If this retrieval of the Announcement files succeeds then this MIB object will be set back to 'loaded (2)'. If this file retrieval does not succeed, then this MIB object will be set to one of: 'invalidFile(3)', or 'loadFailed(4)'. Enumeration: 'loaded': 1, 'loading': 2, 'invalidFile': 3, 'loadFailed': 4.

This is the name of a valid Announcement file which has been stored in the Announcement table as a permanent Announcement File name. This file name may include path or subdirectory information. The individual characters in this name may be alphanumeric characters, forward slashes, backward slashes, periods, dashes, and underscores, but no embedded spaces. Also, the last character of the name must not be a dash or a forward slash. However, single underscore character ('_') is considered a NULL string and should not consist cwAnnFileName name.

This object records the codec associated with a specific Announcdement file. The default will be the value specified in the cwAnnPreferenceCodec MIB object above.

Once a row is created, modification is not allowed on the row. cwAnnFileName MIB object is the mandatory parameter for creating an entry in this table. To delete an Announcement file entry, the RowStaus will be set to 'destroy'.

The compliance statement for the Media Gateway Card Announcement group which implements cwAnnounceGeneric MIB.

This group contains objects related to the control of the Media Gateway Card Announcement Table.

This group contains objects related to configuration of Media Gateway Card Announcement Table.