The configuration string of the 128-port asynchronous adapter is a multi-byte, hexadecimal character field that represents the communication modes used between the adapter and the RAN. The values shown in this string should be examined whenever the connection modes are in question.
In the following example, the lsattr command is used to view the current 128-port adapter settings.
#lsattr -Elcxma0 bus_io_addr 0x108 Bus memory address False bus_mem_addr 0x380000 Bus I/O address False config 00081029100810081029000e100e100e100e100eff N/A True line1_speed 57.6K Line Speed True line1_cabletype 8 Cable Type True commode_l1c1 direct Comm Mode True commode_l1c2 232_modem Comm Mode True commode_l1c3 direct Comm Mode True commode_l1c4 direct Comm Mode True line2_speed 1.2M Line Speed True line2_cabletype 8 Cable Type True commode_l2c1 direct Comm Mode True commode_l2c2 direct Comm Mode True commode_l2c3 direct Comm Mode True commode_l2c4 direct Comm Mode True
In the following figure, the first byte [A] of the config string starts with 00. The next byte [B] 08H shows the communication mode from LINE 1 of the adapter to the first 16 (10H) ports of RAN node 1 as being configured with a line speed of 57.6K internal clocking. See the figure, Configuration String Data.
The communication mode [C] from RAN node 1 to RAN node 2 is 29H (57.6K, external EIA 232 clocking). The communication mode [D] from RAN node 2 to RAN node 3 is 08H (57.6K, internal clocking). The communication mode [E] from RAN node 3 to RAN node 4 is 08H (57.6K, internal clocking).
LINE 2 entries of the config string also start with 00 from the adapter. The communication mode shown as [F] from the adapter to the first 16 (10H) ports of RAN node 1 is 0EH (1.2M, internal clocking). [G], [H], and [I] entries contain the same information as [F]. A final entry of ff indicates the end of this string.
