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Cisco Call Manager - Ambiente e Topologias

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Palestra que apresentei na Estácio, Unidade de Jacarepaguá (Rio de Janeiro/RJ) no dia 20/10/2011. É uma introdução ao sistema da Cisco "Cisco Unified Communications Manager", mais conhecido como CallManager. Conheça minha empresa: http://www.newconnection.com.br


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Cisco Call Manager - Ambiente e Topologias

  1. 1. Cisco IP Telephony Ambiente e Topologias
  2. 2. Autor: Vinicius BuscacioCertificado Cisco CCNA – CCNP – CCVPExperiência com implementação e suporte de Telefonia IP Cisco em empresas comoOrange Business Services, AT&T, Italtel e outras.
  3. 3. Índice1 - História e versões do sistema2 - Servidores e componentes da Topologia3 - Topologias4 - Escalabilidade5 - Protocolos
  4. 4. História e versões do sistemaTodos que trabalham com redes de computadores já ouviram falar da Cisco Systems,que é sem dúvida o maior fornecedor global de equipamentos como roteadores,switches, firewalls, entre outros.Porém, a Cisco também é uma das líderes do novo mercado de Telefonia IP, tanto noramo de PABX IP quando na parte de gateways (voice routers que fazem a conexãoentre a telefonia analógica ou digital e o ambiente VoIP).Nesta apresentação vamos falar sobre o servidor Cisco Call Manager, que é o PABX IPda empresa e é o cérebro de todo o ambiente IPT da empresa, além de ser necessáriopara o ambiente de Telepresence.
  5. 5. História e versões do sistemaO Cisco Call Manager, atualmente na versão 8, é o software que controla todas assinalizações necessárias em um PABX IP. Ele gerencia os telefones, os gateways, osrecursos (como conferência, música de espera, etc), rotas de ligações, permissões dediscagem, etc.Ele não possui nenhuma entrada para placas (como E1, FXO ou FXS), mas estasconexões são possíveis com o uso de gateways, como roteadores Cisco ou outrosequipamentos.Ele não gerencia contas de voice-mail, sendo necessário para isso um servidor emseparado (Cisco Unity, da própria Cisco, ou outro que possa ser integrado de formaanalógica).
  6. 6. História e versões do sistema1997 - Selsius - CallManager 1.0Primeira versão do sistema. Na época, era de propriedade da empresa Selsius Systems.O sistema rodava sobre Windows NT, com linguagem ASP e IIS. Nesta época, a Selsiusconseguiu vender 3.000 IP Phones.1998 - Selsius - CallManager 2.0Segunda versão do sistema. Em novembro deste ano, a Cisco compra a Selsius por US$145 milhões.2000 - Cisco CallManager 3.0Primeira versão da Cisco. Rodava sobre Windows 2000 e utilizava o banco de dadosMicrosoft SQL, Microsoft IIS e linguagem ASP.2001 - Cisco CallManager 3.1Atualização com grandes melhorias em várias funcionalidades. Suporte a maisgateways, telefones, XML e HTML como aplicação para os telefones, ExtensionMobility, MoH, entre outros.
  7. 7. História e versões do sistema2004 - Cisco CallManager 4.0Atualização do sistema com adição de mais funcionalidades.
  8. 8. História e versões do sistema2004 - Cisco CallManager 4.12006 - Cisco Unified CallManager 4.2Mudança do nome do produto para "Cisco Unified CallManager".Nesta época, a Cisco conseguia vender 3.000 a cada 8 horas.2006 - Cisco Unified CallManager 5.0Também lançada em 2006, foi a primeira versão rodando em Linux. O banco de dadospassou a ser o IBM Informix. Foi também a primeira versão a ser possível a utilizaçãodo protocolo SIP para Endpoints.2007 - Cisco Unified CallManager 4.3Última versão a rodar Windows. Utilizava o "MCS Operating System 2003" (CiscoProprietary Operating system baseado no Windows 2003).2007 - Cisco Unified CallManager 5.1Correção de bugs do 5.0.
  9. 9. História e versões do sistema2007 - Cisco Unified Communications Manager 6.0Mais uma mudança de nome, agora para "Cisco Unified Communications Manager".Rodando agora definitivamente em Linux, baseado no Red Hat Linux, esta versão é aprimeira a ser liberada para a instalação em ambiente VMWare, porém somente paratestes, não sendo suportado pelo Cisco TAC.
  10. 10. História e versões do sistema2008 - Cisco Unified Communications Manager 7.0A Cisco pretendia lançar esta versão em Windows e Linux, mas desistiu da versãoWindows. Esta versão padronizou a numeração de todos os outros produtos, sendoassim o Cisco Unity, Cisco Presence, IP Communicator e outros produtos "pularam"para a versão 7.2010 - Cisco Unified Communications Manager 8.0Versão mais atual, e a primeira a ser oficialmente suportada em ambiente devirtualização (VMware ESXi 4.0). Entre outras novidades, suporta IPv6 e o novo codeciSAC (Internet high-fidelity codec).
  11. 11. Servidores e componentes da Topologia- Cisco Unified Communication Manager (Call Manager)- Cisco Unified Communication Manager Express (Call Manager Express)- Cisco Unity Connection (Unity)- Cisco Voice Gateways (Roteadores)- Cisco Power Over Ethernet Switches (Switch PoE)- Cisco IP Phones- Cisco IP Communicator (Softphone)- Cisco ATA- Cisco VG- Cisco Unified Contact Center Express (UCCX - antigo IPCC)- Cisco Presence
  12. 12. Call ManagerO Cisco Unified Communication Manager (Call Manager) é o PABX IP. Todo ogerenciamento do sistema é realizado por interface Web, existindo também o acessovia SSH, mas somente para a manutenção do sistema.Suas principais funções são: - registrar os telefones - registrar os gateways - rotear as chamadas - prover e controlar recursos (MoH, transferências, conferências, etc)
  13. 13. Call Manager ExpressO Cisco Unified Communication Manager Express (Call Manager Express) é o PABX IPembarcado em um roteador Cisco. Ele possui todas as funções como Call Manager,mas de maneira resumida, com suporte a menos funcionalidades.
  14. 14. UnityO Cisco Unity Connection é o servidor de Voice-Mail. Suas principais funções são gravare reproduzir mensagens de voice-mail e criar e gerenciar URAs de relativa poucacomplexidade.
  15. 15. Cisco Voice GatewayCisco Voice Gateways são roteadores que fazem a ligação entre a Telefonia IP e aTelefonia TDM (E1, T1, ISDN, R2, etc.). Podem também prover recursos como DSP paraserviços como conferência e transcoding.
  16. 16. Cisco Voice Gateway
  17. 17. Switch PoEOs Cisco Power Over Ethernet Switches (Switches PoE) possuem as seguintes funções: - prover alimentação over Ethernet para os telefones (até 15.4w – padrãoIEEE 802.3af - até 20w por porta - Cisco) - gerenciar as VLANs de dados e voz com os telefones - aplicar políticas de QoS na LAN
  18. 18. Switch PoECom o gerenciamento de VLAN, o switch consegue diferenciar o tráfego de dados evoz, dando prioridade à voz sobre os dados.
  19. 19. Cisco IP PhonesAs principais funções dos telefones são: - realizar a sinalização das chamadas com o Call Manager e os Voice Gateways - gerenciar as VLANs de dados e voz com o switch - transformar o áudio das ligações em pacotes IP (marcados com o QoScorreto)
  20. 20. Cisco IP CommunicatorO Cisco IP Communicator é o Softphone para o ambiente do Call Manager. Ele suportaaté 8 linhas por software.
  21. 21. Cisco ATAO Cisco ATA é utilizado para conectar aparelhos analógicos como telefones e fax. Elegerencia a sinalização e o áudio da chamadas.
  22. 22. Cisco VGO Cisco VG é basicamente um aparelho ATA de maior capacidade, com 24 (VG224) ou48 portas (VG248) analógicas.
  23. 23. Cisco VG
  24. 24. TopologiasA Cisco recomenda e documenta 5 topologias para ambientes de Call Manager. Sãoelas:1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  25. 25. Topologias1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  26. 26. Single-Site ModelNeste ambiente, existe apenas 1 site e todos os servidores se encontram no mesmoprédio/campus. Podem existir 1 ou mais saídas para a PSTN.
  27. 27. Topologias1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  28. 28. Multiple-Site Model with Independent Call ProcessingNeste modelo, existem 2 ou mais sites, cada um com sua própria conexão PSTN.Ligações entre os sites precisam ser enviadas pela PSTN.
  29. 29. Topologias1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  30. 30. Multiple-Site IP WAN Model with Distributed Call ProcessingNeste modelo, existem 2 ou mais sites, cada um com seus servidores e sua própriaconexão PSTN. Porém, é possível utilizar os recursos de WAN nas ligações entre sites,evitando os custos de ligações locais, longa distância ou até internacionais.
  31. 31. Multiple-Site IP WAN Model with Distributed Call ProcessingLigações entre os sites podem usar a WAN como rota principal, e a PSTN como rotasecundária.
  32. 32. Multiple-Site IP WAN Model with Distributed Call ProcessingEm casos de falha na WAN, as ligações entre os sites devem ser roteadas pela PSTN.
  33. 33. Multiple-Site IP WAN Model with Distributed Call ProcessingEm casos de falha na WAN, as ligações entre os sites devem ser roteadas pela PSTN.
  34. 34. Topologias1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  35. 35. Multiple-Site Model with Centralized Call ProcessingNeste modelo, só existem servidores Call Manager no site central. Todas as unidadesremotas utilizam recursos deste servidor. Os sites remotos possuem conectividadeWAN e PSTN (para ligações locais), além de recursos SRST nos roteadores.
  36. 36. Topologias1 - Single-Site Model2 - Multiple-Site Model with Independent Call Processing3 - Multiple-Site IP WAN Model with Distributed Call Processing4 -Multiple-Site Model with Centralized Call Processing5 - Combined Multiple-Site Model
  37. 37. Combined Multiple-Site ModelHá também a possibilidade de mesclagem dos modelos anteriores: alguns sitesprincipais com servidores Call Manager e outros menores sem servidor, mas utilizandorecursos de algum dos sites principais.
  38. 38. EscalabilidadeO CCM Cluster pode gerenciar até 30.000 IP Phones usando 20 servidores, com:* 1 Publisher* 8 Subscribers* 2 TFTP Servers* até 9 Media Resource ServersO Cisco Unified Communications Manager "Supercluster" pode chegar a até 60.000telefones com:* 1 Publisher* 16 Subscribers* 2 TFTP Servers* até 9 Media Resource Servers
  39. 39. ProtocolosO Call Manager suporta hoje os principais protocolos de Telefonia, além de protocolosdesenvolvidos pela Cisco, mas que ela fez questão de torná-los abertos.Exemplos de protocolos suportados:- SCCP (Skinny)- MGCP- H.323 (H.225, H.245, etc)- SIP- ISDN (QSIG, EURO, etc)- Trunks com SIP, H.225 e Intra-Cluster Trunk (proprietário Cisco)
  40. 40. ContatosVinicius Buscacioviniciusramos16@yahoo.com.brwww.buscacio.net

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