Voice-Enabling the Data Network: H.323, MGCP, SIP, QoS, by James F. Durkin

By James F. Durkin

Assist Telco and ISP engineers and technicians of their transition to IP telephony

  • Assists conventional telco engineers and technicians in designing, imposing, and helping VoIP networks
  • Provides a step by step method of designing a VoIP community
  • Outlines each one VoIP expertise elements with special descriptions of attainable functions
  • Provides an intensive description of Voice over IP for these new to the technology

Voice over IP (VoIP) is a fast-growing know-how inside telcos and ISPs. VoIP is considerably lowering the price of transmitting mobilephone calls and allowing small businesses to go into the +$50 billion market. Many telcos and ISPs are coming into this marketplace whereas VoIP continues to be in its infancy. therefore, there's an pressing desire for telco and ISP engineers to profit this new know-how. This publication will help telco engineers to transition to IP networking with a spotlight on VoIP networks. This booklet introduces the basics of IP networking because it applies to transmitting voice calls utilizing IP packets. Key telco-based applied sciences resembling SS7 are reviewed. a different process is that the ebook outlines each one section of VoIP expertise whereas describing the applying of the expertise. this can be finished by way of describing key steps in designing an operational VoIP community, thereby permitting the reader to appreciate how this expertise is applied.

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Extra info for Voice-Enabling the Data Network: H.323, MGCP, SIP, QoS, SLAs, and Security (paperback)

Sample text

Trunk group—Similar to a carrier ID. A trunk group groups together circuits that have the same signaling characteristics. IOS supports routing based on this group of circuits, which can be associated with a particular service provider. As a result, trunk groups broaden the selection range of TDM channels and analog ports for an outgoing call. For example, a trunk can consist of a predefined set of DS0 timeslots of a T1, or a group of T1 circuits within a gateway can share the same trunk group.

A different POP) from the SLT through a managed WAN. However, strict design requirements need to be followed. End-to-end delay between the PGW 2200 and SLT need to be less than 150 msec and packet loss must not exceed 1 percent. In essence, the use of the SLT enables the PGW to be remoted from the point of interconnect and enables a network design that increases reliability. VoIP Application Servers VoIP application servers consist of various applications needed to support VoIP services. These applications are as follows: • Route server—Supports advanced call control to optimize call routing.

There is a difference between existing IOS translation rules and the new enhanced translation rules. Old and new translation rules should not be used together. A dial plan needs to be revisited when migrating to new translation rules. • Carrier ID—Enables IOS gateways to be connected to multiple carriers. This allows traffic to be identified in terms of which carrier is sending it. Traditionally, only the IP address of the gateway was known. Also, translation can be provided based on the carrier ID.

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