
1. OVERVIEW OF DEFINITYTM GENEBIC 2 AND SYSTEM 85 UPGRADES
The upgrade FoaedutEs described in this documenl provide tlle syscrn leahnician wilh sufncient
infonnation to complete lhe upgrade proclss without on-sita suppon fiom higher-tiered personnel.
Upgrade procldutps ate addrcssed according ro ldr8et vcrsion q sy$em with insEucdons grven
sequentially for cach specific upgrade sccoario.
Thc AT&T SXl.n 85 R2 Upgtodz Ovenizv,l Flowchad in appedix C shows the upgrade ptocess.
Thcse ple€dures do not apply to systems with sp€cial developn€at sofiwarc,
Upgradcs !o various AT&T SysEm 85 versions and lo dle DEFIMTY Communications System bring
thc sysrem di..rl) to lhe targeted ve$ion o. syslem. For example, you nay lpgrade frorn any preaeding
version of AT&T Sys@rn 85 dileady !o R2V4 or frofi any preaeding version of AT&T System 85 or
System 75 direcdy to lhc DEFIMTY Communicatiors Syslem, However, sll upgades must be planned
and implcmented cirefully. National Eoginelring Center/Regional Engineerirg Center (NEC/REC)
suppon is no! normally required for AT&T System t5 R2 version-to'version upgtades, but for ceruin
upgradcs such as 6os. requiriog an additional cabinet (cg. AT&T Sysrem 75 to DEFINITY
Communications System Gencric 2 or AT&T System 85 Rl to R2), dle marketing organizrtion should
tcquesr NEC/REC suppon via form 1154.
Thc curcnt i erval for AT&T System E5 R2 upgrades is six weeks. However, $e upgrade process can
bc complctcd in about four weeks if ft. hardware and sofiware are upgra(M corEur.endy, This intcrval
h subje.t lo changc: Natjonal Product scbedoling 0.IPS) should be consulrcd for the most cuneo(
information.
Software intervals include two we€ks for Software Tech0ical Suppon (STS) proc€dues 6nd one we€k
for facitry procldurEs plus trangon4ion time. Largc sysrern upgradcs rllay rcquitc morc lirne.
Although $e hardware and sofurare caD be upgraded coocunendy, dD hrrdware lnug perform alann
frce before in$alling lhc larget-ve$ioo sofNarc.
Finally, if a cuslomer requires an inI'rvai slloater thar four wcrks, 0lat htdval must be llegotiated *ilh
NPS, Field Servic! Opcradons (FSO), rnd Sofiwarc Tcchnical Suppo( (STS) otgani?ations and may
result in addirional chargcs lo thc cuslomcr.
'IARDWARE AND SOFTWARE FEATUHES
The hardware and soflware fetlre.s for c{h AT&T sys@m E5 re$ion gencrally build on the pteceding
version. For example, Unifonn Cail Dislribution (UCD) in vl beaarne Eohanc€d Uniform Call
Distribution (EUCD) in v2. EUCD in V2 b...rne Aulomadc Catl Disaibution (ACD) in v3, then
became ACD wirh v€c@ring in V4.
The following is a summary of the new hrrdware and softwate ferrurs provided in cach AT&T System
85 R2 version. For additional infomation on eacb AT&T Systcm 85 R2 veEion and DEFINITY
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