Paradyne COMSPHERE 3611 - Manual (Page 31)

COMSPHERE 3600 Series Data Service Units
4-4 September 1996 3610-A2-GB48-50
Table 4-1
(3 of 4)
MCMP Setup Configuration Options *
Lowest Port#: 3
Next 1 2 3 4 5 Prev
Lowest Port Number. 1 Select the lowest port number to be included in the second digital-sharing group. This
configuration option appears when Sharing Device B is enabled and and does not appear when a 2-port MCMP/Flex is
installed.
NOTE: Enabling Sharing Device B and accepting the defaults for configuration options Lowest Port Number and
Number of Ports in Group places Ports 3 and 4 in the digital-sharing group.
1 to 5 – Selects the lowest port number for the digital-sharing group.
#Ports in Gp: 2
Next 2 3 4 5 6 Prev
Number of Ports in Group. Select total number of ports to be included in the digital-sharing group. This configuration
option appears when Sharing Device B is enabled and a 6-port MCMP is installed.
NOTE: Individual ports in a digital-sharing group can be configured for streaming terminal. If streaming terminal
detection is enabled on a port and RTS for that port is ON longer than the value selected, the port’s leads are
clamped until RTS is turned Off. (See
RTS Cntrl in Table 4-4.)
2 to 6 – Selects the number of ports for digital-sharing.
Port Cntrl: Host
Next Host DSD Prev
Port Control. 1 Specifies how to handle contention between the ports in the second digital-sharing group. This
configuration option appears only if Sharing Device B is enabled and does not appear when a 2-port MCMP/Flex is
installed.
Host – No port contention. Causes CTS to turn ON for any port that has RTS turned ON, even if another port is active
(RTS ON). The host protocol must enforce the order of transmission to avoid collisions; the MCMP or TDM does not
provide port contention.
DSD – Digital-Sharing Device (port contention). Controls CTS to ensure that only one port is active at a time. (All ports
must be configured with RTS Control set to DTE.) A subsequent DTE that has RTS turned ON does not have its CTS
turned ON until the first DTE has RTS Off. Selection of the next port to transmit when more than one port has raised
RTS is based upon the port number; the lowest-numbered port has the highest priority.
1 For MCMP, a digital-sharing group is set up by assigning multiple ports to the same channel. If DSD contention is
required, these sharing device configuration options must also be used. Only two digital-sharing groups can have DSD
contention; all other groups are defaulted to Host contention for the Port Control configuration option in this table.
* This table presents configuration options based on MUX Function set to MCMP.