Configuring Cisco AVVID
Introduces Cisco s converged media services technology, and the hardware and software required to make it work.
TABLE OF CONTENTS Configuring Cisco AVVID
The AVVID Telephony Infrastructure
The AVVID telephony infrastructure is the framework by which Cisco has designed its network integrated voice services. In many respects, this infrastructure can be best thought of as a guide for building PBX systems piece by piece over a network and adding specialized functionality as you go.
Voice Gateways (Analog and Digital)
Products such as Cisco voice gateways host and enable the communication between voice and data networks. These voice gateways serve to provide connectivity between your private network and conventional telephone trunks, legacy voice-mail systems, and other analog devices that are not capable of direct communications. These gateways, when configured correctly and with the proper electronic support, are capable of resending an input signal to a destination at near wire speeds.
Voice gateways are available in two flavors analog and digital. Depending on the equipment to which you are connecting, your choice will be determined by the accommodation of the available interface. As with other AVVID communications, the same restrictions apply that is, the number of lines supported by the gateway are a direct function of the support that the legacy device can oblige. The gateway does not increase the number of supported connections beyond the capacity of the legacy switch.
Digital gateways typically provide for two types of transports. As you may have assumed, these transports are provisions for T1 and E1 circuits. In the United States, Canada, Japan, and a few other countries, T1 lines are common and use -law encoding. In most of Europe...
Copyright Syngress Publishing, Inc. 2001 under license agreement with Books24x7
