User's Manual

2. Preliminary Decisions
AMPS EAC-2100 Manual: (Draft, 02/01) Page 2-15
2.5.4 Selecting the Directed Retry Channels
The Directed Retry Channels parameter (selection C, Control Channels Menu) is probably the
best option for most EAC-2100 installations. The parameter is a factory-set default and is one
of four options available under selection J (DCCH Channel State During "All Channels Busy")
of the Control Channels Menu.
When the EAC-2100 is busy, the boosted DCCH channel (or substitute DCCH channel, if
Revertive DCCH Channel Option is enabled) remains on the air. If more accesses or page
responses come in, the EAC-2100 sends the subscriber a special "directed retry" message. This
message gives the subscriber a list of up to six other DCCH channels on which to attempt the
access. These are the directed retry channels and are assigned by the customer (selection C,
Control Channels Menu).
The list of six channels is sent to the subscriber in the directed retry message. The subscriber
will scan this set of channels and try its access on the strongest of the six channels.
F NOTE: The donor DCCH channel and the DCCH channels of cells adjacent to the
boosted coverage area should be entered. The boosted DCCH channel must not be in
this list.