Lucent Technologies Definity Audix System Digital Networking Guide

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-17 Switch Administration Requirements for DCP Mode 2 
4
Figure 4-13. Modem Switch Hunt Group – Group Member Assignments 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-18 Switch Administration Requirements for DCP Mode 2 
4
The following sc reen shows Pag e 1 of the remote Mac hine Profile sc reen on 
DEFINITY AUDIX A to set up  a networking  c onnec tion with DEFINITY AUDIX B. 
Figure 4-14. Remote Machine Profile Screen — Page 1 to Call DEFINITY 
AUDIX B 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-19 Switch Administration Requirements for DCP Mode 2 
4
The following sc reen shows Pag e 2 of the remote Mac hine Profile sc reen on 
DEFINITY AUDIX A to set up  a networking  c onnec tion with DEFINITY AUDIX B.
Figure 4-15. Remote Machine Profile Screen — Page 2 to Call DEFINITY 
AUDIX B 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-20 Switch Administration Requirements for DCP Mode 2 
4 
						

							DCP Mode 1 — 56 Kbps 
5-1 Considerations 
5
DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
5
DCP Mode 1 — 56 Kbps
This c hapter d esc rib es Dig ital Communic ations Protoc ol (DCP) Mod e 1. Mod e 1 
is a hig h-sp eed , 56 Kb p s network c onnec tion. Use it when the systems to b e 
networked  are in d ifferent loc ations and  req uire some typ e of interloc ation fac ility 
to c ommunic ate.
NOTE:
DCP Mod e 3 is rec ommend ed  for loc al networking on the same G3r switc h 
b etween a DEFINITY AUDIX system and  an Intuity AUDIX system or an 
AUDIX R1 system. See Chapter 3, ‘‘DCP Mode 3 — 64 Kbps’’
, for a 
description of DCP Mode 3.
This c hap ter presents sup p orted  56 Kb p s c onfig urations for the DEFINITY AUDIX 
system; all other 56 Kb ps c onfig urations must b e d esig ned  b y c ustom 
d evelop ment. The examp le in this c hap ter shows two DEFINITY AUDIX systems 
using DCP Mod e 1 at b oth loc ations. See Chap ter 6
 for a d esc rip tion of networks 
that c omb ine DCP mod es.
Considerations
If a c ustomer is c onsid ering  using  DCP Mod e 1 c onnec tions in their DEFINITY 
AUDIX network, keep  the following  in mind :
nDCP Mod e 1 is not rec ommend ed for loc al networking  c onfig urations 
(DCP Mode 3 is rec ommend ed  for loc al c onnec tions).
nThe DEFINITY AUDIX system c an network with other DEFINITY AUDIX 
systems, Intuity AUDIX systems, and  AUDIX R1 systems using  this 
method .
nTransmission in this typ e of network is full-dup lex, sync hronous, at 56 
Kbps. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 1 — 56 Kbps 
5-2 General Information 
5
nThe c ustomer also will need  a DS1 interfac e on the switc h to c onnec t with 
the 56 Kb p s fac ility.
nThe c ustomer will need  ac c ess to 56 Kbp s rob bed -b it fac ilities at a static  
or d ynamic  serving offic e (SO).
nLong distance, 56 Kbps service may be provided by a long distance 
servic e p rovid er.
General Information
To use DCP Mod e 1 as the transmission p rotoc ol, the switc h must b e set up  to 
ac c ess a switc hed  network at 56 Kb p s via rob b ed -b it fac ilities. These sp ec ial 
ac c ess lines c an b e either AT&T Datap hone Dig ital Servic e (DDS) or ACCUNET 
T1.5, AT&T Software Defined  Network (SDN) servic e p rovid ing  ac c ess to either a 
static  or d ynamic  Serving  Offic e (SO), or c omp atible servic es provid ed  b y other 
vend ors. Currently the System 75, DEFINITY Generic  1, and  DEFINITY Generic  3 
c an p rovid e this typ e of ac c ess.
The following fig ure, DCP Mod e 1 Network Using  Switc hed  56 Servic e
, shows 
two DEFINITY AUDIX systems networked  via 56 Kb p s servic es. 
NOTE:
If the c ustomer d oes not sub sc rib e to switc hed  56 servic e, c onsid er the 
DCP Mod e 2 or DCP Mod e 3 network alternatives b efore setting  up  a 
switc hed  56 Kb p s fac ility. It is rec ommend ed  that 64 Kb p s c onnec tions be 
used  to ac hieve maximum d ata throug hp ut whenever 64 Kb p s c onnec tivity 
is available between two systems. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 1 — 56 Kbps 
5-3 General Information 
5
Figure 5-1. DCP Mode 1 Network Using Switched 56 Service
Static Access
Static  Software Defined Data Network (SDDN) allows c ustomers c urrently 
sub sc rib ing  to SDN voic e ap p lic ations to transmit d ata on the same ac c ess 
arrang ement b y d efining  a sub g roup  for d ata. Customers using  this c onfig uration 
must have a trunk subgroup (TSG) dedicated to SDDN 56 Kbps between the 
c ustomer p remises and  a c entral offic e. They must also have a System 75 R1V3 
Issue 2.2 or later, a DEFINITY Generic  1, or a DEFINITY Generic  3 switc h.
The c entral offic e must p rovid e one of the following :
nAT&T Software Defined  Network (SDN), T1.5, or Datap hone Dig ital Servic e 
(DDS) and  Switc hed  Digital Servic e (SDS), or c omp atible servic e offered  
b y another vend or
nA 4ESS supp orting  56 Kb p s servic e
DEFINITY
AUDIX
DEFINITY
AUDIX DS1 port
DS1 portPBX
PBX T1
T1
Po i n t -o f -
Presence
switch
Po i n t -o f -
Presence
switch
Switched
56 service 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 1 — 56 Kbps 
5-4 DEFINITY AUDIX Requirements for DCP Mode 1 
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A c ustomer c annot use this op tion if they have the following :
nT1.5 ac c ess to a c entral offic e tariffed  for SDN 
nT1.5 that d oes not orig inate from a 4ESS with Switc hed  Dig ital Servic e 
(SDS)
Dynamic Access
Dynamic  SDDN (non-ISDN) allows c ustomers that c urrently sub sc rib e to SDN 
voic e ap p lic ations to transmit d ata on the same ac c ess arrang ement b y p refixing  
a 115 feature c od e in front of a telep hone numb er. This allows c ustomers to 
alternately transmit voic e and  d ata on one ac c ess line; a sep arate trunk g roup  for 
56 Kbps data is not required.
The T1.5 is d edic ated  to SDN and  is therefore not exc lusively 56 Kb p s. The 
c entral offic e must route to a 4ESS that sup p orts 56 Kb p s via dig ital c onnec tivity. 
This ac c ess may only b e offered  on c irc uits without ec ho c anc ellation.
The d ynamic  arrang ement is not p ossib le from loc ations using  Datap hone Dig ital 
Servic e (DDS) ac c ess. DDS lines must terminate in a c entral offic e that has been 
tariffed for Software Defined  Network (SDN), DDS, and  Switc hed  Dig ital Servic e 
(SDS).
System 75 R1V3, DEFINITY Generic  1, and  DEFINITY Generic  3 sup port d ynamic  
ac c ess b ut have sp ec ial req uirements suc h as c irc uit p ac ks.
NOTE:
DEFINITY AUDIX d ig ital networking throug h tand em switc hes may not 
work. Contac t the d esig n c enter for these d esigns.
DEFINITY AUDIX Requirements for 
DCP Mode 1
Eac h DEFINITY AUDIX system req uiring  ac c ess to a switc hed  56 network must 
b e running R3.2 or later software.  
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 1 — 56 Kbps 
5-5 Switch (or Customer) Requirements for DCP Mode 1 
5
Switch (or Customer) Requirements 
for DCP Mode 1
To imp lement DEFINITY AUDIX networking  over static  or d ynamic  switc hed  56 
Kb p s fac ilities, the c ustomers switc h must have a DS1 interfac e to c onnec t with 
the 56 Kb p s switc hed  network. See the System Desc rip tion for the switc h to see 
whic h c irc uit p ac ks will meet this req uirement.
NOTE:
DEFINITY AUDIX d ig ital networking throug h tand em switc hes may not 
work. Contac t the d esig n c enter for these d esigns.
Whether a c ustomer is using  static  or d ynamic  56 Kb p s, the p oint-of-p resenc e 
switc h need s to b e translated  to matc h the switc h (inc lud ing  wink in/wink out). 
The RNXs are set up  b y the c ustomer and  ad d ed  to the network b y AT&T 
Network Systems or another vend or. 
NOTE:
Contac t the d esig n c enter to d esig n ISDN.
NOTE:
See the DEFINITY Communic ations System Generic  2.2 and  Generic  3 
Version 2 DS1/CEPT1/ISDN-PRI Referenc e
 (555-025-107) for ad ministering  
DS1 trunks on the DEFINITY switc h.
Static Access Switch Requirements
The req uirements for networking  DEFINITY AUDIX systems via static  56 Kb p s 
fac ilities d ep end  on the c ustomers p remises switc h:
nSystem 75
— The switc h must b e R1V3 2.2 or later.
— All tone d etec tors must b e TN748C (V4 or later).
nDEFINITY Generic  1 and  Generic  3 
— Any release will sup p ort static  56 Kb p s ac c ess.
— All tone d etec tors must b e TN748C (V4 or later).
— The tone c loc ks must b e TN786 and  TN741. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 1 — 56 Kbps 
5-6 Data Rates for DCP Mode 1 
5
Dynamic Access Switch Requirements
The req uirements for networking  DEFINITY AUDIX systems via d ynamic  56 Kb p s 
fac ilities d ep end  on the c ustomer premises switc h:
nSystem 75
— The switc h must b e R1V3 2.2 or later.
— All tone d etec tors must b e TN748C (V4 or later).
nDEFINITY Generic  1 and  Generic  3
— Any release will sup p ort dynamic  56 Kb p s ac c ess.
— All tone d etec tors must b e TN748C (V4 or later).
— The tone c loc ks must b e TN786 and  TN741.
Data Rates for DCP Mode 1
The c onfig urations shown in this c hap ter op erate at 56 Kb ps.
The following fig ure shows Page 1 of the remote Mac hine Profile sc reen for 
c alling  a remote system using  a d ata rate of 56 Kb p s.
Figure 5-2. Machine Profile Screen for Remote System 56 Kbps Call, page 1