System Config 264Model 1001MC Operations Guide 10 • HTTP/HTML web page referenceNotes on clock mode settingsThe Clock Mode Setting determines the source of timing for the link. Most applications will use one of thefollowing configurations:• internal-receiveRecover(0)• external-receiveRecover(1)There are special situations which would require the use of the external-external(4) clock mode setting. Thissetting should only be used when the application has an IM2RC/K and a 1095RC in the rack system and aIM1/K and a 1095 standalone at the remote site. If you are using any other interface cards do not use the exter-nal-external(4) configuration.Note When your are using the external-external(4) clock mode settings youmust have the Framing Mode set to slotted for the local and remote units.Notes on framing mode settingsThe Framing Mode Setting notifies the card of the type of interface it will be connected to. When you areusing an IM2RC/K with a 1095RC rack card, the system administrator should set the Local Clock Mode toexternal (either external-receiveRecover(1) or external-external(4)) and the Local Framing Mode to slotted. Whenyou are using an IM1/K and a 1095 standalone at the remote site, the system administrator should set theClock Mode to external-external(4) and the Remote Framing Mode to slotted.Illegal configuration messagesIf you are receiving an invalid configuration indication after creating a configuration, it is resulting from anillegal combination of variables. In most cases, the cause of the problem has to do with the Framing Mode vari-able. Patton DSL modems should only be set to the slotted mode when you are using an IM2RC/K with the1095RC or an IM1/K with the 1095 standalone unit. Also, if you are using a IM2RC/K or IM1/K interfacecard, the 1095/1095RC must always be set to the external clock mode. Review the table below for a list of validconfigurations that can be used with the 1095/1095RC.Local Clock Mode Local Framing Mode Remote Clock Mode Remote Framing ModeInternal Normal Receive Recover NormalExternal Normal Receive Recover NormalExternala Slotted Receive Recover NormalExternala Slotted Externalaa. Denotes a unit that must have an IM2RC/K or IM1/K installed.SlottedReceive Recover Normal Internal NormalReceive Recover Normal External Normal
