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 
4-7 DEFINITY AUDIX Modem/Data Module Arrangements 
4
DEFINITY AUDIX to DEFINITY AUDIX 
Multistag e d ialing  from one DEFINITY AUDIX system to another DEFINITY AUDIX 
system p ermits a d ig ital networking  p ort to p lac e a c all in three stag es.
1. Call a DCP-to-mod em c onversion resourc e.
2. Initiate a sec ond  c all off p remises over analog  fac ilities to a remote 
mod em.
3. Estab lish the...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-8 DEFINITY AUDIX Modem/Data Module Arrangements 
4
n“ W”  – Wait for mod ems to hand shake
n“ B”  – Send  Break c ommand  to ac tivate the DIAL: p romp t on the DCP d ata 
mod ule
n51234 – Cause the DCP d ata mod ule to d ial the DEFINITY AUDIX 
networking  p ort or hunt g roup .
The following fig ure shows the three stag es of multistag e d ialing : 
.
Figure 4-5. Multistage Dialing Between...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-9 DEFINITY AUDIX Modem/Data Module Arrangements 
4
In the d ial string  shown in the ab ove fig ure, the end  of the first stag e of d ialing  is 
indic ated  b y the W
 c ommand  whic h tells the DEFINITY AUDIX system to wait for 
a c onnec tion to b e estab lished  to the next element. Calling  via a mod em/data 
mod ule arrang ement (shown in the ab ove fig ure) involves the following stag es:...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-10 Switch Hardware Requirements for DCP Mode 2 
4
Switch Hardware Requirements for 
DCP Mode 2
DCP Mod e 2 has the following  hardware req uirements for the System 75 
R1V3 2.2 or later, DEFINITY G1, DEFINITY G3i, and  DEFINITY G3r:
nTN754 DCP p ort (one p ort for eac h 7400A d ata mod ule)
nTN726 EIA p ort (one p ort for eac h ADU)
nTN742 analog  p ort/TN746B analog  line (one p ort or one line for...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-11 Switch Administration Requirements for DCP Mode 2 
4
Hunt Groups
If there are two d ig ital networking  p orts, set up  a hunt g roup  for the d ig ital 
networking  p orts and , op tionally, for p airs of d ata mod ules, ADUs, and mod ems.
Digital Networking Ports
If there are two digital networking ports, set up a hunt group that c ontains the two 
p orts for inc oming  c alls. 
Additional Hunt...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-12 Switch Administration Requirements for DCP Mode 2 
4
DEFINITY
AUDIX A
DEFINITY
AUDIX B TN754
port
TN726
port TN754
port
TN726
port TN746B
port
TN746B
port TN746B
port
TN746B
portAnalog
trunk
Analog
trunk
7400A 7400A
ADU ADU
Modem
Modem Modem
ModemPBX 1
PBX 2 554-
nnnn
552-nnnn
Hunt group 11
Hunt group 21 Hunt group 12
Hunt group 22
ext. 40021
ext. 20021 ext. 40022
ext. 20022 ext. 40011
ext. 20011...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-13 Switch Administration Requirements for DCP Mode 2 
4
Figure 4-7. Switch Hunt Groups for Data Module, ADU, and Modem Ports (2 of 2)
40020 W ATDT 9,5520010 W B 20000
20020 W ATDT 9,5540010 W B 40000 Call 7400A
hunt group
Call ADU
hunt groupWait
WaitTell modem to call
modem hunt group
on PBX 2 (Hunt
Group 22)
Tell modem to call
modem hunt group
on PBX 1 (Hunt
Group 12)Wait then send
break to ADU...

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-14 Switch Administration Requirements for DCP Mode 2 
4
The following fig ures show samp le switc h Hunt Group  sc reens for DEFINITY 
AUDIX A.
Figure 4-8. Digital Networking Ports Switch Hunt Group – Screen 1 

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-15 Switch Administration Requirements for DCP Mode 2 
4
Figure 4-9. Digital Networking Ports Switch Hunt Group – Group Member 
Assignments
Figure 4-10. Data Module Switch Hunt Group – Screen 1 

DEFINITY AUDIX System Digital Networking  585-300-534  Issue 2
May 1999
DCP Mode 2 — 9600 or 19,200 bps 
4-16 Switch Administration Requirements for DCP Mode 2 
4
Figure 4-11. Data Module Switch Hunt Group – Group Member Assignments
Figure 4-12. Modem Switch Hunt Group – Screen 1