Cisco Systems 3600 manual Configure Dial Peers, Inbound versus Outbound Dial Peers

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Configure Dial Peers

Configure Dial Peers

The key point to understanding how Voice over IP functions is to understand dial peers. Each dial peer defines the characteristics associated with a call leg, as shown in Figure 6 and Figure 7. A call leg is a discrete segment of a call connection that lies between two points in the connection. All the call legs for a particular connection have the same connection ID.

There are two different kinds of dial peers:

POTS—Dial peer describing the characteristics of a traditional telephony network connection. POTS peers point to a particular voice port on a voice network device.

VoIP—Dial peer describing the characteristics of a packet network connection; in the case of Voice over IP, this is an IP network. VoIP peers point to specific VoIP devices.

Four call legs make comprise and end-to-end call—two from the perspective of the source router as shown in Figure 6, and two from the perspective of the destination router as shown in Figure 7. A dial peer is associated with each one of these call legs. Dial peers are used to apply attributes to call legs and to identify call origin and destination. Attributes applied to a call leg include QoS, CODEC, VAD, and fax rate.

Figure 6

Dial Peer Call Legs from the Perspective of the Source Router

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Call leg for POTS

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Figure 7

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Dial Peer Call Legs from the Perspective of the Destination Router

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Inbound versus Outbound Dial Peers

Dial peers are used for both inbound and outbound call legs. It is important to remember that these terms are defined from the router’s perspective. An inbound call leg originates outside the router. An outbound call leg originates from the router.

For inbound call legs, a dial peer might be associated to the calling number or the port designation. Outbound call legs always have a dial peer associated with them. The destination pattern is used to identify the outbound dial peer. The call is associated with the outbound dial peer at setup time.

VC-26Voice, Video, and Home Applications Configuration Guide

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Contents Configuring Voice over IP for the Cisco 3600 Series How Voice over IP Processes a Telephone CallList of Terms Prerequisite Tasks Voice over IP Configuration Task List Configure IP Networks for Real-Time Voice Traffic VC-18Voice, Video, and Home Applications Configuration Guide Configure Multilink PPP with Interleaving Step Command PurposeConfigure RTP Header Compression Multilink PPP Configuration ExampleChange the Number of Header Compression Connections Enable RTP Header Compression on a Serial InterfaceRTP Header Compression Configuration Example Configure Weighted Fair Queuing Configure Frame Relay for Voice over IPConfigure Custom Queuing Frame Relay for Voice over IP Configuration Example Configure Number Expansion Create a Number Expansion TableConfigure Number Expansion Shows the number expansion table for this scenarioConfigure Dial Peers Inbound versus Outbound Dial PeersInbound versus Outbound Dial Peers Create a Peer Configuration Table CodecDirect Inward Dial for Pots Peers Configure Pots PeersOutbound Dialing on Pots Peers Incoming and Outgoing Pots Call Legs Configure VoIP Peers Troubleshooting Tips Optimize Dial Peer and Network Interface ConfigurationsConfigure IP Precedence for Dial Peers Validation TipsConfigure Rsvp for Dial Peers Configure Codec and VAD for Dial Peers Configure Codec for a VoIP Dial PeerConfigure Voice over IP using a Trunk Connection Configure VAD for a VoIP Dial PeerVC-36Voice, Video, and Home Applications Configuration Guide Configure Voice over IP for Microsoft NetMeeting Configure a Trunk ConnectionVoice over IP Configuration Examples FXS-to-FXS Connection Using RsvpConfiguration for Router RLB-1 FXS-to-FXS Connection ExampleVC-40Voice, Video, and Home Applications Configuration Guide Configuration for Router RLB-w Configuration for Router R12-eConfiguration for Router RLB-2 Configuration for Router SJ Linking PBX Users with E&M Trunk LinesConfiguration for Router SLC Pstn Gateway Access Using FXO Connection Pstn Gateway Access Using FXO Connection ExamplePstn Gateway Access Using FXO Connection Plar Mode Pstn Gateway Access Using FXO Connection Plar ModeConfiguring Voice over IP for the Cisco 3600 Series VC-47 VC-48Voice, Video, and Home Applications Configuration Guide
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3600 specifications

Cisco Systems 3600 is a high-performance modular router series designed for small to medium-sized enterprises and branch offices. Launched in the late 1990s, it has been widely recognized for its flexibility, scalability, and reliability. The series is part of Cisco's extensive networking portfolio and has played a vital role in delivering various services and applications while enhancing operational efficiency.

One of the main features of the Cisco 3600 series is its modular architecture, allowing organizations to customize the router according to their specific needs. The system supports various interface modules that can accommodate different types of connections, including serial, Ethernet, and DSL, which helps in building versatile network solutions. The modularity not only increases the router’s lifespan by enabling upgrades as technology changes but also supports future expansion as the organization grows.

The Cisco 3600 series routers utilize advanced routing protocols, such as RIP, OSPF, EIGRP, BGP, and IS-IS, to ensure efficient data transmission and optimal network performance. This capability allows the routers to adapt to varying traffic demands and complexities, thereby optimizing bandwidth utilization and reducing latency in communications. With extensive memory options, including Flash and DRAM, the 3600 series can handle robust data processing and support intricate routing environments.

Security is another critical feature of the Cisco 3600 series. It includes support for VPNs, firewalls, and other security protocols, providing a secure environment for data transfer. The implementation of features like Access Control Lists (ACLs) and Intrusion Detection Systems (IDS) enhances the overall security posture, making it suitable for organizations looking to protect their sensitive information.

In terms of scalability, Cisco 3600 routers can easily accommodate increased workloads and network growth. This is done through the provision of additional modules and cards to increase capacity and performance. The series can also support multiple WAN connections, enabling seamless integration with various telecommunication services.

Additionally, the Cisco 3600 series is designed for ease of management. Utilizing Cisco's IOS software, network administrators can manage and configure the routers efficiently, thanks to a user-friendly interface and extensive command capabilities. This makes troubleshooting simpler and ensures network availability remains high.

In conclusion, Cisco Systems 3600 series routers combine robust performance, security features, and scalability, making them an invaluable asset for businesses looking to maintain a reliable and efficient networking solution.