To change the current voice DSP profile settings, click the Edit button.
To save the changed settings, click the Apply button.
Redundancy Oversubscr Type | For each call that is made resources are used. A resource is
active if it is currently in use and it is standby if it is being held
in case of the active's failure. If an active resource fails, the standby
can take over and the call continues. Standby resources in a redundancy
configuration can be oversubscribed. A voice DSP system can be configured
as follows:
Oversubscription none: implies 1:1 (one to one) oversubscription. When a standby is allocated, the pool of available actives is depleted by one. low: implies 1:2 oversubscription. medium: implies 1:4 oversubscription. high: implies infinite oversubscription. Active pool is never depleted when any standbys are allocated. If all active resources are used for real calls, no standby resources will be available to take over a failed call. |
Jitter Buffer Type | There are two types of jitter algorithms: static and dynamic. Dynamic allows the jitter buffer to grow and shrink as inter-arrival jitter changes. A static jitter buffer does not. |
Jitter Buffer Size (msec) | Jitter buffer size in milliseconds. Refers to the amount of memory
usage that can store certain milliseconds of voice.
There are two types of jitter algorithms: static and dynamic. Dynamic allows the jitter buffer to grow and shrink as inter-arrival jitter changes. A static jitter buffer does not. |
InterArrv Jitter Thresh (msec) | The inter-arrival jitter threshold per channel used as a trigger value in milliseconds to generate a trap when its value is passed. If this value is 0, the threshold mointoring is disabled for inter-arrival jitter. Valid range is 0 to 100 milliseconds. The default value is 80 milliseconds. |
Packets Lost Threshold (pk/min) | Packets lost per minute threshold. A trap will be generated when
this value is passed. If this value is 0, the threshold mointoring is
disabled for packets lost.
Valid range for this value is from 0 to 10000 pkts/min. The default value is 600 pkts/min. |
Echo Cancellation Type | This data informs which echo cancellation algorithm to be used
by default: 165 or 168 for a particular channel. The numbers 165 and 168
are the ITU designations for the algorithms. The number following the
designation describes the echo tail length in milliseconds.
The echo tail length required depends on factors such as network configuration, local loop length, line frequency response, etc. Generally, 16 ms is more than adequate for local loop (ie. Zedge) and 32 ms is a good minimum for the network side. Valid values for the variable are: off - echo cancellation is off (on all platforms). g165EchoTL16 - G.165 echo cancellation with echo tail length of 16ms (on MALC only). g168EchoTL48 - G.168 echo cancellation with echo tail length of 48ms. Following values are not supported: g165EchoTL32 - G.165 echo cancellation with echo tail length of 32ms. G.165 echo cancellation with echo |
Silence Suppression Type | Which silence suppression algorithm the voice DSP should use on a channel. Silence suppression stops voice packet generation during periods of silence. The SID (silence descriptor) frame is generated at the start of a silence period, then periodically, and is used to characterize the power level of the background noise during the silence period on the encode side of the voice path. The SID frame is passed to the decode side through a packet encoding medium (AAL2 or RTP). The decode side then generates comfort noise at an equivalent power level dictated by the SID frame values. |
Echo Return Loss | The amount of loss between the transmitted signal and the reflected
echo back from the hybrid where the 4-to-2 wire conversion takes place.
For MALC: 0dB and 6dB. 6dB is default. For all other platforms: 0dB, 3dB, 6dB. 3db is default. |
January 21, 2011