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Cisco Systems manual Distinguishing Voice and Modem Calls on the Cisco AS5800

Models: AS5800

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Configuring Dial Peers

Using the elements, the algorithm is as follows:

For all peers where call type (VoIP versus POTS) match dial peer type:

if the type is matched, associate the called number with the incoming called-number else if the type is matched, associate calling-number with answer-address

else if the type is matched, associate calling-number with destination-pattern else if the type is matched, associate voice port to port

This algorithm shows that if a value is not configured for answer-address, the origin address is used because, in most cases, the origin address and answer-address are the same.

To configure a POTS dial peer for direct inward dial, use the following commands beginning in global configuration mode:

Step

Command

Purpose

1

Router(config)# dial-peer voice number pots

Enters the dial peer configuration mode to configure a

 

 

POTS peer.

 

 

 

2

Router(config-dial-peer)# direct-inward-dial

Specifies direct inward dial for this POTS peer.

 

 

 

Note Direct inward dial is configured for the calling POTS dial peer.

Distinguishing Voice and Modem Calls on the Cisco AS5800

When the Cisco AS5800 is handling both modem and voice calls, it needs to be able to identify the service type of the call—that is, whether or not the incoming call to the server is a modem or a voice call. When the access server handles only modem calls, the service type identification is handled through modem pools. Modem pools associate calls with modem resources based on the called-number (DNIS). In a mixed environment, where the server receives both modem and voice calls, you need to identify the service type of a call by using the incoming called-numbercommand.

Without this, the server attempts to resolve whether an incoming call is a modem or voice call based on the interface over which the call comes. If the call comes in over an interface associated with a modem pool, the call is assumed to be a modem call; if a call comes in over a voice port associated with a dial peer, the call is assumed to be a voice call.

It helps to understand the logic behind the algorithm the system uses to distinguish voice and modem calls. The algorithm is as follows:

If the called-number matches a number from the modem pool, handle the call as a modem call

If the called-number matches a configured dial peer incoming called number, handle the call as a voice call

Else handle the call as a modem call by default modem pool

If there is no called-number information configured, call classification is handled as follows:

If the interface matches the interface configured for the modem pool, handle the call as a modem call.

If the voice port matches the one configured as the dial peer port, handle the call as a voice call

Else handle the call as a modem call by default modem pool

To identify the service type of a call to be voice, use the following commands beginning in global configuration mode:

Voice over IP for the Cisco AS5800 15

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Cisco Systems Distinguishing Voice and Modem Calls on the Cisco AS5800, Using the elements, the algorithm is as follows
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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.