By John Alexander
Exposes the internal workings of Cisco CallManager that can assist you maximize your Cisco IP Communications resolution* learn new content material on QSIG, SIP trunks, video help, hunt lists and line teams, time-of-day routing, and new beneficial properties additional in CallManager releases 3.2, 3.3, 3.4, 4.0, and 4.1* overview content material from the 1st variation that has been absolutely revised and up-to-date to CallManager unlock 4.1* the right way to set up and deal with a CallManager answer* comprehend the parts that make up CallManager name routing by using simple to complex examples that resolve firm name routing difficulties* achieve a whole realizing of the way CallManager manages media assets and strategies info for conferencing, transcoding, annunciation, and extra* research distinct information regarding North American and foreign dial plans, trunk and station units, media assets, and lots more and plenty moreCisco CallManager basics, moment version, offers examples and reference information regarding CiscoR CallManager, the call-processing element of the Cisco IP Communications resolution. Cisco CallManager basics makes use of examples and architectural descriptions to provide an explanation for how CallManager approaches calls. This booklet info the interior workings of CallManager in order that these answerable for designing and conserving a Voice over IP (VoIP) answer from Cisco SystemsR can comprehend the position each one part performs and the way they interrelate.This booklet is the best source to complement your figuring out of CallManager. you will study specific information regarding dial plan administration and get in touch with routing, and software program parts, media processing, name aspect files, process administration and tracking, and the background of CallManager. The authors, all contributors of the unique staff that constructed and applied the CallManager software program and documentation from its early phases, additionally offer a listing of positive factors and Cisco ideas that combine with CallManager.
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Additional resources for Cisco CallManager Fundamentals
In addition, the database is the repository for information such as service parameters, features, and the route plan. The database layer is a set of dynamic link libraries (DLL) that provide a common access point for data insertion, retrieval, and modification of the database. The database itself is Microsoft SQL 2000. If the database were to reside on a single machine, the phone network would be vulnerable to a machine or network outage. Therefore, the database uses a replication strategy to ensure that every server can access important provisioning information even if the network fails.
Provides support for the TAPI and JTAPI application interfaces. 711 media mixing capabilities. Permits Simple Message Desk Interface (SMDI) communications to voice messaging systems over an RS-232 connection. 729a, and wideband codec for MOH to IP telephony endpoints. Cisco RIS Data Collector 39 40 Cisco Telephony Call Dispatcher Cisco TFTP Cisco Database Layer Monitor (provides database notification) Publisher database 40 Collects serviceability information from all cluster members for improved administration.
When you initiate a conference, CallManager looks for an available Unicast conferencing device and dynamically redirects all participants' voice streams through the device. The Catalyst 6xxx platform offers a blade that performs mixing functions, and NM-HDV, NM-HDV2, and NM-HD-2VE modules support mixing functions for Cisco IOS gateways. 711 codec. 323 endpoint such as NetMeeting. 323v1-compatible do not tolerate interruptions in their media sessions very well. Attempts to place these devices on hold will cause them to terminate their active call.