Introduction1-153610-A2-GB91-90 July 1999The DPII and ADp protocols both use link-levelnetwork addressing. In a DMC environment, however,each DSU and modem has a unique overall networkaddress. This address is determined automatically byANALYSIS based upon the SDU, local DSU, and remoteDSU addresses prior to firmware version 4.25. Firmwareversion 4.25 or greater is no longer based upon the SDU;each DSU has its own unique address.If earlier versions of the 3600 Series DSUs are part ofyour network, Table 1-5 summarizes the addressesdisplayed by the DSU when a specific protocol isselected.Table 1-5Protocols and AddressingDSU SW ver Address Displayed3.xx or below All protocols:Addressing was carrier andslot dependent.Network address was thetributary’s address.4.xx or 5.xx All protocols:Control address could be setfrom the DCP or SDCP.ADp Address displayed:Table 1-6 used to convertADp address to DPIIaddressTable 1-7 used to convertADp address to DMCaddress6.xx ADp mode – ADp addressDPII mode – DPII addressDMC mode – Table 1-7 usedto convert ADp address toDMC address.Control Network AddressA control DSU’s network address can be within arange of 1 to 255 when using ADp. Although an attachedDBM occupies the same slot as its parent DSU, it is aseparate addressable entity that is assigned its ownaddress (the DSU’s address plus 1). The SystemController and the 6700 or 6800 Series NMS support256 addresses on each control channel (CC). Refer toTable 1-6. When the control DSU is using ADp, the rangeof network addresses is 1 through 255; if the DSU is usingDPII, the range of network addresses would be 11 through77.The control DSUs on a single network interface(control channel) may be assigned addresses in whateverorder you decide. For example, a DSU in Slot 1 of acarrier may be assigned an address of 149, a DSU inSlot 2 may be assigned an address of 85, and so on.However, it is recommended that only odd numbers beassigned to DSUs, thereby allowing for the addition ofDBMs.The address entered at the DCP is either the ADp orDPII network address. When addressing commands froman NMS and the DPII or DMC protocol is used, the ADpnetwork address must be converted to theDATAPHONE II or DMC address.DPII protocol does not accept addresses ending in0 or 9. Refer to Table 1-7 to convert the ADp networkaddress to a DATAPHONE II address.Prior to firmware version 4.25, DMC protocol wascarrier and slot dependent. For firmware version 4.25 orgreater, each control DSU has a unique hexadecimaladdress. Refer to Table 1-7 to convert the ADp networkaddress to the DMC address (remember that carrier andslot only apply to firmware versions less than 5.0). Thistable shows address conversions for a control DSU. Todetermine the tributary DSU addresses, convert thecontrol DSU address to the DMC address, and incrementthe DMC address by one for each tributary on the circuit.For example, a control DSU ADp address of 32 isequivalent to a DMC address of 800. The control DSU’stributary addresses are 801, 802, 803, etc.
