Features - ZyXEL Communications VOP1372G-61 User Manual

Comfort Noise Generation
Your device generates background noise to fill moments of silence when the other device in a call
stops transmitting because the other party is not speaking (as total silence could easily be mistaken
for a lost connection).
Dynamic Jitter Buffer
The built-in adaptive buffer helps to smooth out the variations in delay (jitter) for voice traffic. This
helps ensure good voice quality for your conversations.
Tx/Rx Gain
The VOP allows you to increase or decrease the volume of the audio signal sent to and received
from the subscriber.
VPI (Voice Packetization Interval)
The VOP allows you to configure the amount of audio information (measured in milliseconds)
contained in each packet of data transmitted.
1.2.1 H.248 Features
Centralized and De-centralized Structure
For ease of management, you can use multiple VOPs as part of a centralized H.248 interface that
can span across multiple VOPs and even multiple chassis in order to manage up to 1200
subscribers. A centralized H.248 interface makes it easy to scale up as the number of subscribers
increases. You can add cards and subscribers with a minimum of configuration and without
interrupting existing DSL or VoIP services. The following graphic shows an H.248 interface that
includes VOPs in three different chassis.
Figure 1 Centralized VOP Deployment
H.248 Interface
VOP1372G-61 User's Guide
Chapter 1 Introducing the VOP1372G
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