Cisco Systems AS5800 manual Configuring Dial Peers, Inbound versus Outbound Dial Peers

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Configuration Tasks

Configuring Dial Peers

The key point to understanding how VoIP functions is to understand dial peers. Each dial peer defines the characteristics associated with a call leg, as shown in Figure 3 and Figure 4. A call leg is a discrete segment of a call connection that lies between two points in the connection. All of 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. VoIP peers point to specific VoIP devices.

An end-to-end call comprises four call legs, two from the perspective of the source access server as shown in Figure 3, and two from the perspective of the destination access server as shown in Figure 4. A dial peer is associated with each call leg. 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 3

 

Dial Peer Call Legs from the Perspective of the Source Router

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Call leg for POTS

Call leg for VoIP

dial peer 1

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Figure 4

Destination

Dial Peer Call Legs from the Perspective of the Destination Router

Call leg for VoIP

Call leg for POTS

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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 access server’s perspective. An inbound call leg originates outside the access server. An outbound call leg originates from the access server.

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.

12Cisco IOS Release 12.0(7)T

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Contents Feature Overview Voice over IP for the Cisco AS5800Feature Overview BenefitsTwo-Stage-Dial Toll Bypass Pstn Voice-Traffic and Fax-Traffic Off load Benefits Two-Stage Dial Toll BypassRelated Features and Technologies Universally Accessible Voice-Mail and Fax-Mail ServicesRestrictions Related DocumentsSupported Platforms Supported Standards, MIBs, and RFCsStandards MIBsPrerequisites PrerequisitesConfiguration Tasks Configuring IP Networks for Real-Time Voice TrafficConfiguration Tasks Configuring Voice Ports Configuring Custom Queuing and IP RTP ReserveConfiguring Voice Ports Step Command PurposeFine-Tuning Isdn Voice Ports Configuration Tasks Step Command PurposeVerifying Voice Port Configuration Troubleshooting TipsSecondsinfinity Configuring Dial Peers Inbound versus Outbound Dial PeersConfiguring Pots Peers Pots command is a tag that uniquely identifiesOutbound Dialing on Pots Peers Pots peer. The number value of the dial-peer voiceDirect Inward Dial for Pots Peers Incoming and Outgoing Pots Call LegsUsing the elements, the algorithm is as follows Distinguishing Voice and Modem Calls on the Cisco AS5800Configuring VoIP Peers Verifying Dial Peer ConfigurationConfiguring the Cisco AS5800 as an H.323 Gateway Configuring the Cisco AS5800 as an H.323 GatewayRouterconfig-if#h323-gateway voip interface Routerconfig-if#h323-gateway voip h323-idConfiguring the Cisco AS5800 for Interactive Voice Response Verifying Gateway Interface ConfigurationConfiguring IVR Router config# call application voice nameConfiguration Example Verifying IVR ConfigurationConfiguration Example Configuring the Cisco 3640 as a Gatekeeper Configuring the Cisco 2600 as a GatewayConfiguring the Cisco AS5800 as a Gateway Command Reference New CommandsCommand Reference Modified Commands Codec Port Show csm Show voice port Voice-portDefaults Command ModesCodec Syntax DescriptionCommand History Related CommandsUsage Guidelines ExamplesDtmf-relay CommandDescription Default No port is configuredPort Cisco MC3810Command Mode ExampleShow csm Router# show csm voice 2/4/4/0 Explains the fields contained in both of these examples Specifies the T1 or E1 controllerShow csm voice Field Descriptions Field DescriptionCommand Reference Show csm voice Field Descriptions Show csm Tdmdspstream Related Commands Show voice port Syntax Description For the Cisco 2600/3600 seriesFor the Cisco AS5300 Access Server For the Cisco AS5800 Universal Access ServerFor the Cisco MC3810 Show voice portRouter# show voice port 1/0/0 Router# show voice port 1/2 Explains the fields in the sample output Show voice port Field DescriptionsSummary Show voice port Command Reference Show voice port Field Descriptions Show voice port Field Descriptions for the Cisco AS58005800# show voice port 1/0/0D Isdn 1/0/0D Show call active voice Show vrm activecalls ReleaseModification5800# show vrm activecalls Show vrm activecalls Show vrm vdevice Field DescriptionsCommand Reference Show vrm vdevice Field Descriptions Show vrm vdevices Show vrm vdevices5800# show vrm vdevices 6 Show vrm vdevices 5800# show vrm vdevices summary Summary of voice devices for all voice cardsShow vrm vdevice summary Field Descriptions CCCAPCODECG711U DSP# Show vrm activecalls Test vrm busyout Test vrm busyoutRouter# test vrm busyout 4 all Router# test vrm busyout 4 1 Router# test vrm busyout 4 1 channelTest vrm reset Following example resets DSP 4 on the VFC installed in slotTest vrm reset Router# test vrm reset 4Test vrm unbusyout Router# test vrm unbusyout 4 allTest vrm unbusyout Router# test vrm unbusyout 4 1Router# test vrm unbusyout 4 1 channel Voice-port Global configuration Voice-portDial-peer voice Debug Commands New Debug CommandsDebug Commands There are no arguments or keywords used in this command Debug vrm controlFormat of the Send messages is as follows Format for the Receive messages is as followsDebug vrm control Describes the fields in previous example Debug vrm control Field DescriptionsDebug vrm error Debug vrm errorVtspfail codec value not supported This error message notifies the VRM of a DSP alarm Possible state values are as follows = ResetDebug vrm error Field Descriptions Expains the field contained in the previous exampleDebug vrm control Debug vrm inout Debug vrm inoutGlossary GlossaryGlossary Glossary
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AS5800 specifications

Cisco Systems has long been a leader in the networking and telecommunications field, and its AS5800 series of routers exemplify this tradition. The AS5800, along with the AS5850, AS5350, AS5400, and AS5300, provides robust solutions for service providers and enterprise-level networking applications. Each of these models has distinct features and characteristics that cater to the evolving demands of internet traffic and data processing.

The Cisco AS5800 is designed for high-capacity routing and optimized for broadband services. It supports a wide range of services, including voice, data, and video applications, making it a versatile option for service providers looking to deliver integrated solutions. It is equipped with advanced quality of service (QoS) features that ensure bandwidth is allocated effectively, holding strong even under heavy traffic conditions.

In comparison, the AS5850 offers superior processing capabilities and is typically utilized in larger-scale implementations. This model supports high-density interfaces, allowing numerous connections without compromising performance. Its architecture includes enhanced MPLS (Multiprotocol Label Switching) support, enabling more efficient traffic management and better utilization of network resources.

The AS5350 is known for its scalability and energy efficiency, ideal for voice-over-IP (VoIP) and media gateway applications. It supports various telephony features, such as protocol interworking and transcoding, making it a preferred choice for organizations focusing on digital voice technologies. The AS5300, while slightly older, continues to be a valuable asset for less demanding networks, offering reliable performance with VoIP capabilities and basic data applications.

The AS5400 bridges the gap between high-performance routing and operational efficiency. It incorporates Cisco's proprietary technologies to ensure seamless connectivity and robust failover systems. This model is highly regarded for its security features, protecting network integrity and providing peace of mind for businesses relying on sensitive data transfer.

Overall, Cisco’s AS5800 series showcases a progressive evolution of routing capabilities with enhanced features tailored for resilience, scalability, and performance. These routers not only address the technical needs of modern networks but also strategically position organizations for future growth in an increasingly digital world. Each model, with its unique attributes, continues to support the varied demands of global communication infrastructures.
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