Cisco Systems 3600 manual Configure Voice over IP using a Trunk Connection

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Configure Voice over IP using a Trunk Connection

Configure VAD for a VoIP Dial Peer

To disable the transmission of silence packets for a selected VoIP peer, use the following commands beginning in global configuration mode:

Step

Command

Purpose

1

dial-peer voice number voip

Enter the dial-peer configuration mode to configure

 

 

a VoIP peer.

 

 

 

2

vad

Disable the transmission of silence packets

 

 

(enabling VAD).

 

 

 

The default for the vad command is enabled; normally the default configuration for this command is the most desirable. If you are operating on a high bandwidth network and voice quality is of the highest importance, you should disable vad. Using this value will result in better voice quality, but it will also require higher bandwidth requirements for voice.

For example, to enable VAD for VoIP dial peer 108, enter the following:

dial-peer voice 108 voip destination-pattern +14085551234 vad

session target ipv4:10.0.0.8

Configure Voice over IP using a Trunk Connection

A trunk is a communication line between two switching systems; typically, the switching equipment in a central office and a PBX. A trunk connection is a permanent physical layer (wire), point-to-point connection.

Voice over IP simulates a trunk connection by creating virtual trunk tie lines between PBXs connected to Cisco 2600 and 3600 series routers on each side of a VoIP connection. (See Figure 11.) In this example, two PBXs are connected using a virtual trunk. PBX-A is connected to Router A via an E&M voice port; PBX-B is connected to Router B via an E&M voice port. The Cisco routers spoof the connected PBXs into believing that a permanent trunk tie line exists between them.

Figure 11 Virtual Trunk Connection

1(308)555-0180

172.19.10.10

172.20.10.10

1(510)555-0190

 

PBX-A

Router A

 

 

Router B

PBX-B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IP cloud

 

 

 

 

E&M

 

E&M

 

 

 

 

 

 

 

 

Virtual trunk connection

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Configuring Voice over IP for the Cisco 3600 Series VC-35

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Contents How Voice over IP Processes a Telephone Call Configuring Voice over IP for the Cisco 3600 SeriesList 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 Step Command Purpose Configure Multilink PPP with InterleavingMultilink PPP Configuration Example Configure RTP Header CompressionChange 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 Create a Number Expansion Table Configure Number ExpansionShows the number expansion table for this scenario Configure Number ExpansionInbound versus Outbound Dial Peers Configure Dial PeersInbound versus Outbound Dial Peers Codec Create a Peer Configuration TableDirect Inward Dial for Pots Peers Configure Pots PeersOutbound Dialing on Pots Peers Incoming and Outgoing Pots Call Legs Configure VoIP Peers Validation Tips Optimize Dial Peer and Network Interface ConfigurationsConfigure IP Precedence for Dial Peers Troubleshooting TipsConfigure Rsvp for Dial Peers Configure Codec for a VoIP Dial Peer Configure Codec and VAD for Dial PeersConfigure VAD for a VoIP Dial Peer Configure Voice over IP using a Trunk ConnectionVC-36Voice, Video, and Home Applications Configuration Guide Configure a Trunk Connection Configure Voice over IP for Microsoft NetMeetingFXS-to-FXS Connection Using Rsvp Voice over IP Configuration ExamplesFXS-to-FXS Connection Example Configuration for Router RLB-1VC-40Voice, Video, and Home Applications Configuration Guide Configuration for Router R12-e Configuration for Router RLB-wConfiguration for Router RLB-2 Linking PBX Users with E&M Trunk Lines Configuration for Router SJConfiguration for Router SLC Pstn Gateway Access Using FXO Connection Example Pstn Gateway Access Using FXO ConnectionPstn 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.