Zhone Technologies 600 - Manual (Page 22)

1-6 Server Cards
Model No. Running Head ADPCM Card User Screens and Settings ADPCM Card
TYPE
The Type parameter identifies the voice and signaling requirements for the incoming circuit.
The options are v (voice), voice and v&s (signaling) and trnsp (transparent). Use v when the
input to the ADPCM channel is a 64 kbps channel and inband signaling is not required. Use
v&s when the input to the ADPCM channel is a 64 kbps voice channel and the ADPCM card
must also provide inband signaling.
The trnsp setting allows you to map the outputs of SRU ports to the ADPCM channel. The
subrate data will be clocked into the ADPCM channel at an input rate of 24 kbps, then passed
transparently (non-compressed) through the ADPCM card to the appropriate WAN time slot.
This could be useful if you have an odd number of voice channels and want to utilize the
empty engine pair of the last ADPCM channel.
The B-channel traffic from the BRI card also uses the trnsp setting, but it does not place any
restrictions on the compression rates.
If the engine is assigned to a voice card, this selection will show v&s. If assigned to an SRU
card, it will show trnsp. You cannot change it from this screen.
RATE
The Rate parameter identifies the compression requirements for the incoming circuit. The
options are 24K, 32K, and 40K. The sum of the pair of engines must always equal 64 kbps.
If this engine is assigned to a user card port, the selection will show the value that was chosen
on that port. It cannot be changed from this screen.
SIG MODE
The Signaling Mode parameter identifies the type of signaling required for the incoming
circuit from the network. If v&s was chosen in the Type setting, the options are e&m, fxs,
plar, and fxo. If v or trnsp was chosen in the Type setting, the only option is n/a.
If this engine is assigned to a user card, this selection will show user. It cannot be changed
from this screen.
CODING
The Coding parameter identifies the PCM companding format required for the incoming
circuit from the network. The choices are u-law or a-inv.
If this engine is assigned to a voice or BRI card, this selection will show the value you selected
for that port. If this engine is assigned to an SRU card, this selection will show u-law. It cannot
be changed from this screen.