Lucent Technologies Definity Audix System Digital Networking Guide

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 3 — 64 Kbps 
3-3 DEFINITY AUDIX Requirements for DCP Mode 3 
3
DEFINITY AUDIX Requirements for 
DCP Mode 3
Eac h DEFINITY AUDIX system must b e running  R3.2 or later software.
Switch (or Customer) Requirements 
for DCP Mode 3
Switc h req uirements d ep end  on whether the systems are serving the same 
switc h or are serving  d ifferent switc hes. The DEFINITY AUDIX system c an b e 
c o-loc ated  on the same G3r switc h with an Intuity AUDIX system and /or an 
AUDIX R1 system.
Co-located Requirements
The switch must be equipped with a TN754 DCP circuit pack. The networking 
c onnec tion is from one DCP p ort to another (the DEFINITY AUDIX system uses a 
DCP p ort for the network c onnec tion and  the Intuity AUDIX system or AUDIX R1 
system uses a DCP port).
Interlocation Requirements
For remote c onfig urations, the c ustomer need s ac c ess to 64 Kb ps p ub lic  or 
p rivate telep hone network fac ilities; these should  normally b e a T1 c arrier (DS1 
Interfac e set for Alternate Voic e/Data) or ISDN PRI. The c ustomer need s a DS1 or 
ISDN interfac e on the switc h to c onnec t to these network fac ilities. 
The switc h must have the following  c irc uit pac ks: 
nTN748C Tone Detec tor (System 75 req uires a vintage 1 or vintag e 3 c irc uit 
p ac k; Generic  1 and  Generic  3 req uire vintag e 3) — req uired  in all c arriers 
of a System 75, b ut not all c arriers of a Generic  1 or Generic  3. (Do not use 
the TN748B, TN748D vintage 1, or the TN756.)
NOTE:
The TN748D vintag e 1 b oard d oes not work for this ap p lic ation. Also, 
any existing TN748B tone d etec tors must be up g rad ed  to TN748Cs.
nTN786 and  TN741 tone c loc ks must b e used .
nTN727 Network Controller (System 75) or TN777 Network Controller 
(Generic  1 and  Generic  3) is required .
nCirc uit p ac ks for DS1 and /or ISDN suc h as TN722 (DS1 on G1), TN767 
(DS1 on G1, G3i, and  G3r), or TN454 (DS1 or ISDN). 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 3 — 64 Kbps 
3-4 Switch Administration Requirements for DCP Mode 3 
3
Switch Administration Requirements 
for DCP Mode 3
For remote c onnec tions, the DS1 fac ility c onnec ting  the two systems is translated  
on the switc h as a trunk group  (DS1 c ommon c arrier) with an ac c ess c ode.
Data Rates for DCP Mode 3
This arrang ement op erates at sp eed s of 64 Kb p s.
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 64 Kb p s.
Figure 3-2. Machine Profile Screen for Remote System 64 Kbps Call, page 1 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 3 — 64 Kbps 
3-5 Data Rates for DCP Mode 3 
3
The following fig ure shows Page 2 of the remote Mac hine Profile sc reen for 
c alling  a remote system using  a d ata rate of 64 Kb p s.
Figure 3-3. Machine Profile Screen for Remote System 64 Kbps Call, page 2 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 3 — 64 Kbps 
3-6 Data Rates for DCP Mode 3 
3 
						

							DCP Mode 2 — 9600 or 19,200 bps 
4-1 Considerations 
4
DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
4
DCP Mode 2 — 9600 or 19,200 bps
This c hapter d esc rib es Dig ital Communic ations Protoc ol (DCP) Mod e 2. DCP 
Mod e 2 is an async hronous, low-sp eed  (9600 or 19,200 b p s) c onnec tion. Use 
this typ e of network c onnec tion only when the systems to be networked  are in 
d ifferent loc ations and  require some type of interloc ation fac ility to c ommunic ate. 
The DEFINITY AUDIX system always uses a mod em/data mod ule arrang ement 
for a DCP Mode 2 c onnec tion. This c hap ter p resents supp orted  DCP Mod e 2 
configurations. High-speed (DCP Mode 1/ DCP Mode 3) connec tivity is the 
p referred  c onnec tion typ e if hig h-sp eed  fac ilities are availab le between 
loc ations.
Considerations
If a c ustomer is c onsid ering  using  DCP Mod e 2 c onnec tions in their DEFINITY 
AUDIX network, keep  the following  in mind :
nOnly remote networking  c onfig urations are sup p orted .
nThe DEFINITY AUDIX system c an network with other DEFINITY AUDIX 
systems, Intuity AUDIX systems, and  AUDIX R1V5 and  later systems via 
this method .
nWith only one networking p ort, low-sp eed  c onnec tivity limits the system to 
10 networking  nod es, and  100 loc al or 10,000 remote sub sc ribers.
nWhen networking  with an AUDIX R1 system, see AUDIX Networking, 
585-300-903, for information on c onnec tions and  mod em p ooling  at the 
AUDIX R1 system. 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-2 DCP Mode 2 Connections 
4
DCP Mode 2 Connections
The following fig ure shows two DEFINITY AUDIX systems with a DCP Mode 2 
d ig ital networking  c onnec tion. 
Figure 4-1. DCP Mode 2 Connection (Modem/Data Module Arrangement)
The switc h p orts shown in the above d rawing  need  the following  c irc uit p ac ks:
nEIA port – TN726
nDCP p ort – TN754
nAnalog  p ort – TN742 or TN746B
DEFINITY
AUDIXDEFINITY
AUDIX
DCP port
Analog
portAnalog
port Analog
trunkMode 2
Analog
trunk
EIA port
7400A
Public/private
interlocation facilities
ADU
H-600-258,
group 1
null modem
cable M7U
null modem
cable
Modem Modem
PBX PBX 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-3 DCP Mode 2 Connections 
4
The following fig ure shows a DCP Mod e 2 c onnec tion to pub lic /p rivate 
interloc ation fac ilities with the following  network c onnec tions:
A. throug h a switc h mod em pool to an AUDIX R1 system 
B. throug h a sing le mod em to an AUDIX R1 or an Intuity AUDIX system
Figure 4-2. DCP Mode 2 Connection to AUDIX R1 and Intuity AUDIX
DEFINITY
AUDIX
Analog
port Analog
trunk
EIA port
TN726
Public/private
interlocation facilities
ADU
Null modem
cable
Modem
Analog or
voice-grade data
Analog or
voice-grade data
Analog or
voice-grade dataModem
pool
DCPH600-331
group 2
RS-232
access
AUDIX A
R1
AUDIX B
R1 or
Intuity AUDIX
PBX
Switch A
Switch B
Analog
line
Analog
trunk
Modem Mode 2 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-4 DEFINITY AUDIX Modem/Data Module Arrangements 
4
DEFINITY AUDIX Modem/Data 
Module Arrangements
DEFINITY AUDIX DCP Mod e 2 uses one of the following  typ es of mod em/d ata 
mod ule arrang ements (this arrang ement is d ifferent than AUDIX R1 stand -alone 
modem pooling):
nDCP port (TN754), 7400A data module, modem, and analog port as 
shown in the following  fig ure.
Figure 4-3. DCP Port and 7400A Data Module with Modem
In the ab ove figure, the 7400A is attac hed  to a Parad yne
® Comsp here® modem 
using a null mod em c ab le.
DEFINITY
AU D I X
Analog
port Analog
trunk
DCP port
TN754
7400A
Modem
PBX
Analog
T/RM7U
null modem
cable DCP 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-5 DEFINITY AUDIX Modem/Data Module Arrangements 
4
nElec tronic  Ind ustries Assoc iation (EIA) p ort, async hronous d ata unit 
(ADU), mod em, and analog  p ort as shown in the following  fig ure.
Figure 4-4. EIA Port and ADU with Modem
In the ab ove fig ure, the ADU is attac hed  to a Parad yne Comsphere mod em using  
a null mod em c ab le. 
DCP Mode 2 Hardware
The following hard ware c an be used  in a mod em/d ata module arrang ement for 
DEFINITY AUDIX d ig ital networking : 
nParad yne Comsp here 3820 or 3820p lus (d ialup/leased  line 2-wire/4-wire 
mod em) (p referred  for U.S.)
nParad yne Comsp here 3810 or 3810p lus (d ialup/leased  line 4-wire 
mod em)
nParad yne Comsp here 3910 (some non-US markets)
n7400A Data Mod ule (c onnec ts to a DCP port [ TN754] ) and  a 7400A p ower 
supply
nNull-mod em c ab le (M7U) (3 feet) for 7400A
nADU (c onnec ts to an EIA p ort [ TN726] ) (manufac ture d ate Oc tob er 1994 
or later) and  an ADU p ower sup p ly
nNull-mod em c ab le (H-600-258, Group  1) (12 inc hes) for ADU
n103A jac k (2 for eac h mod em/d ata mod ule arrang ement)
nD8W c ord (14 feet)
DEFINITY
AUD I X
Analog
port Analog
trunk
EIA port
TN726
ADU
Modem
PBX
Analog
T/RH-600-258, group 1
null modem
cable 
						

							DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-6 DEFINITY AUDIX Modem/Data Module Arrangements 
4
Refer to Fi g u re  8 -1, 7400A Data Mod ule in a DCP Mod e 2 Mod em/Data Mod ule 
Arrang ement, and  Fi g u re  8 -2, ADU in a DCP Mode 2 Mod em/Data Module 
Arrang ement for c onnec tivity d iagrams.
In selec ting  mod ems or d ata mod ules for mod em p ooling , it is imp ortant to note 
that onc e a sp ec ific  mod el is c hosen for use on one end  of the c onnec tion, only 
c ertain mod els will work on the other end  of the c onnec tion. Comb inations that 
have b een tested  are listed  in the following  tab le.
Modem Front Panel Settings
Refer to Chap ter 8, ‘‘Hard ware Installation for DCP Mod e 2’’, for information on 
mod em front panel setting s.
Multistage Dialing
DCP Mod e 2 mod em/d ata module arrang ements use multistage d ialing . All 
systems that network at low speed  with a DEFINITY AUDIX system must have 
multistag e d ialing  c ap ab ility. The DEFINITY AUDIX system, Intuity AUDIX system, 
and  AUDIX R1V5 and  later systems (TN539B network c ard req uired ) have 
multistag e d ialing . 
Table 4-1.  Connection Compatibility
Definity 
AUDIX 3.2 
Networking AUDIX R1/INTUITY
7400A/ADU 
with 
Comsphere 
Mod emsDirec t Connec t RS232 with Comsp here Mod ems
(AUDIX R1 and Intuity AUDIX)
Comb ined  Mod em Pool with 7400A/2296
(AUDIX R1)
Comb ined  Mod em Pool with 7400A/Comsp here Mod ems
(AUDIX R1)
Comb ined  Mod em Pool with 7400A/DM424 
(AUDIX R1)
Stand  Alone Mod em Pool with 7400A/Comsp here Mod ems 
(AUDIX R1)