Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Administration For Network Connectivity Manual

							IP Trunk Administration 
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For example, the code numbers 01, 02, ..., were prepended to the dialed string in 
the originating switch. For each line number, the code number is entered in the 
Search Digits field (as in the display above) as a unique digit string associated 
with the line number. Since the code number is not intended to be routed to the 
DEFINITY to complete the call, none is entered in the Replace Digits filed to 
prevent digit replacement. Remember, the digits prepended at the originating end 
and searched for at the terminating end must be the same.
Note:Any digits searched for must also be replaced if they are used to complete 
the routing of a call. If digit substitution will be needed, it may be 
necessary to put a digit string in the Search Digits field, and substitute 
those with new digits in the Replace Digits field.
7  For Entry Type, enter accept to allow incoming calls.
8  In the Search Digits field, type the digits entered in the Terminating Search string 
box for this site in the Dial/Routing Plan Worksheets, or follow the Procedures for 
Extension Dialing Between Sites.
9  In the Replace Digits field, type the digits entered in the Terminating Replace 
string box for this site in the Dial/Routing Plan Worksheets, or follow the 
Procedures for Extension Dialing Between Sites.
10  Click OK.
The Add Terminating Entry dialog box closes, and the Dial/Routing Plan property 
page appears showing the information you entered.
11  Repeat the above steps for each terminating entry (line or dialed string) specified 
in the Dial/Routing Plan Worksheets and/or the Procedures for Extension Dialing 
Between Sites.
12  Click OK to save your changes and close Configuration Manager.
The Dial/Routing Plan on the remote switch must be administered for the Originating 
and Terminating Routing Info in a similar manner.
The IP Trunk software is now configured without restrictions on remote access.
Stopping IP Trunk 
serviceNote:Before you stop IP Trunk service, you must busy out the IP trunk group 
on the DEFINITY ECS; then, after you restart IP Trunk service, release 
the IP trunk group.
To stop IP Trunk service:
1  Busy out the IP trunk group on DEFINITY ECS.
2  Open the Windows NT Control Panel.
3  Double-click Services.
The Services dialog box appears.
4  In the Service column, select  IP Trunk Service.
5  Click Stop.
Started disappears and the Status column does not show an entry beside Internet 
Telephony Server.
6  Click Close. 
						

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Starting IP Trunk 
serviceUse this procedure only if you have manually stopped your IP Trunk service.
To start IP Trunk service:
1  Log onto the NT server.
2  Open the Windows NT Control Panel.
3  Double-click Services.
The Services dialog box appears.
4  In the Service column, select  IP Trunk Service.
5  Click Start.
Started appears in the Status column.
6  Click Close.
7  Release the IP trunk group on DEFINITY ECS.
Change companding to 
A-LawFor systems that use A-Law instead of Mu-Law companding, you need to change two 
settings on the System Parameters Country Options screen and edit a .ini file in the 
Windows NT C: directory on the TN802.
On the SAT:
1  On the System Parameters Country Options screen, change the Companding 
Mode field to A-Law and change the Base Tone Generator Set field to 2.
2  Busyout the trunk group associated with the IP trunk by typing busyout board 
UUCSS and pressing Enter.
In the Windows interface to TN802B:
3  Click on Control Panel > Services.
4  Highlight IP Trunk Service, then click on Stop.
5  In the lower left-hand corner, right-click Start > Explore.
6  Go to the c: drive and click on its, then bin.
7  Double-click on the its.ini file to open it in Notepad.
8  Under the [MediaLib] section, go to COMPANDING=MLAW. Change MLAW to 
ALAW.
9  Click on File > Save to save the file.
10  Click on File > Exit to exit Notepad.
11  Click on Control Panel > Services.
12  Highlight IP Trunk Service, then click on Start.
Note:Do not select Startup.
After service has started, go to the SAT:
13  Release the trunk group associated with the IP trunk by typing release board 
UUCSS and pressing Enter. 
						

							Procedures for Extension Dialing Between Sites 
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Procedures for Extension Dialing Between Sites
These procedures outline two different extension dialing configurations that may be 
used from a particular site to other IP Trunk sites. The first configuration is non-DCS, 
where one trunk group exists in DEFINITY and is routed through the IP Trunk server 
to many different IP Trunk locations. The second configuration is DCS, where the 
trunks are dedicated to specific locations — users are routed to a different trunk 
group; that is, different trunk ports, within the DEFINITY, based on the digits dialed. 
The IP Trunk server routes calls based on the ports or lines the call was placed on. 
Each of these configurations is outlined below and examples are provided.
Non-DCS Configuration
In the configuration above, each DEFINITY switch has all of the IP Trunk ports in 
one trunk group, trunk group 50. Extension calls to the other DEFINITY switches in 
the network are routed to this trunk group and the IP Trunk servers administration 
evaluates the dialed strings it receives and routes the calls to the appropriate IP 
address based on that dialed string.
To arrange a network in this configuration, an administrator will need to know each 
IP Trunk servers IP address and the range of extensions in the DEFINITY at that 
location.
IP
TRK
LAN/WAN
IP
TRK
IP
TRK
IP Trunk Network Configuration
One DEFINITY Trunk Group to many locations
Switch A
extension range 6500-6599
IP address:  198.152.169.240Switch B
extension range 4400-4499
and 4900-4999
IP address:  198.152.169.238
Switch C
extension range 4300-4399
and 3400-3499
IP address:  198.152.169.236
All ports in 
Trunk Group 50All ports in 
Trunk Group 50
All ports in 
Trunk Group 50DEFINITY
DEFINITY DEFINITY 
						

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In Switch A above, the IP Trunk servers originating entries will be as follows, in 
order for calls through that IP Trunk server to be routed to Switch B and Switch C 
appropriately.
These entries allow any line/port on the IP Trunk server to carry calls to the other two 
locations. It also allows each unique string (extension range) destined for one of the 
other two locations to be evaluated and routed to the appropriate location. There 
would need to be terminating entries in Switches B and C that correspond to the 
entries above, allowing the appropriate dialed strings to be terminated at those 
locations.
For example, in order for calls to be received at Switch A, from Switch B and C, the 
terminating entry in the IP Trunk would be as follows:
Only one digit is required to uniquely identify calls to this location, no other location 
has extensions that begin with “6,” and since this encompasses the entire range of 
extension numbers, only this entry is required.Line Search 
StringReplace 
StringIP Address
Any        44        44 198.152.169.238  (Switch B)
Any        49        49 198.152.169.238 (Switch B)
Any        43        43 198.152.169.236  (Switch C)
Any        34        34 198.152.169.236  (Switch C)
Line Search String Replace String
Any      6 6  (From any switch to Switch A) 
						

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DCS over IP Trunk
IP Trunk supports most of the DCS features. DCS signaling with IP Trunk can be 
either X.25 or TCP/IP. For X.25 DCS signaling, the signaling data path is over a tie 
trunk connection between the switches. For TCP/IP DCS signaling, the signaling data 
is handled by the C-LAN circuit pack and can be either point-to-point (ppp) across a 
tie trunk facility or over the IP network. Figure 10 shows the voice and signaling data 
path options for IP Trunk with DCS.
Figure 10. IP Trunk with DCS
DCS Administration
The administration of DCS with IP Trunk is the same as for DCS without IP Trunk. 
You can set up IP Trunk connections for DCS using either X.25 or TCP/IP protocols 
for DCS signaling.
X.25 signaling
For X.25 DCS signaling, you administer the connection on the Data Module screen 
and the Processor Channel Assignment screen. The type of data module is 
proc-intf for an R7si or 
x.25 for an R7r. Signaling via X.25 is not supported on 
the csi model.
C-LAN
Processor
DCS Signaling Data
Tie-Trunk 
Circuit Packs
C-LAN
Tie Trunk
IP 
Interface 
or ITS-EIP 
Interface
or ITS-E
Vo ic e  D a t a
WAN, Intranet,
PPP
DEFINITY DEFINITY
Switch 2
or Internet Switch 1
Ethernet 
						

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TCP/IP signaling
For TCP/IP signaling, you administer the connection on the Data Module screen and 
the Processor Channel Assignment screen. The data module type is 
ppp for a 
point-to-point signaling connection or 
ethernet for signaling over an IP network.
In addition, TCP/IP signaling requires administration of the Node Names screen and, 
in some cases, the IP Routing screen.
Details of the administration procedures for signaling connections are given in 
Chapter 3 of this book.
DCS or Dedicated Trunks to Specific Locations Configurations
In the configuration above, each DEFINITY switch has a separate trunk group that is 
dedicated to being linked to another site, each of these trunk groups has a specified 
group of ports/lines that is coordinated at the other end. Extension calls to the other 
DEFINITY switches in the network are routed to unique trunk groups based on 
ARS/AAR digit analysis within the DEFINITY, the IP Trunk servers administration 
routes the calls to the appropriate IP address based on the port/line that the call arrives 
on. This configuration works whether DCS is administered between these locations, 
or if users simply dial extension numbers to be routed to the appropriate switch and 
do not wish to receive DCS features. To arrange a network in this configuration, an 
administrator will need to know each IP Trunk servers IP address, and the ports/lines 
that are dedicated to that particular address
IP
TRK
LAN/WAN
IP
TRK
IP
TRK
IP Trunk Network Configuration
DCS or dedicated DEFINITY Trunk Groups 
to specific locations
Switch A
extension range 6500-6599
IP address:  198.152.169.240Switch B
extension range 4400-4499
and 4900-4999
IP address:  198.152.169.238
Switch C
extension range 4300-4399
and 3400-3499
IP address:  198.152.169.236 DEFINITY
DEFINITY DEFINITY
7UN*US
SRUWVOLQHV 7UN*US
SRUWVOLQHV
7UN*US
SRUWVOLQHV 
						

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On Switch A 
On Switch B
On Switch C
These entries allow a specific line/port on the IP Trunk server to carry calls to a 
specific other location. No digits are searched for, as we already know that the 
DEFINITY has done the appropriate digit analysis. A unique string is applied in front 
of each dialed string by adding a replace string; each replace string is unique to that 
line/port, allowing for the terminating end to associate a call to the same line it left on 
at the originating end.Line Search 
StringReplace 
StringIP Address
1  None  01 198.152.169.236 (Switch C) 
2  None  02 198.152.169.236 (Switch C)
3  None  03 198.152.169.236 (Switch C)
4  None  04 198.152.169.238 (Switch B)
5  None  05 198.152.169.238 (Switch B)
6  None  06 198.152.169.238 (Switch B)
Line Search 
StringReplace 
StringIP Address
4  None  04 198.152.169.240 (Switch A) 
5  None  05 198.152.169.240 (Switch A)
6  None  06 198.152.169.240 (Switch A)
7  None  07 198.152.169.236 (Switch C)
8  None  08 198.152.169.236  (Switch C)
9  None  09 198.152.169.236 (Switch C)
Line Search 
StringReplace 
StringIP Address
1  None  01 198.152.169.240 (Switch A) 
2  None  02 198.152.169.240 (Switch A)
3  None  03 198.152.169.240 (Switch A)
7  None  07 198.152.169.238 (Switch B)
8  None  08 198.152.169.238 (Switch B)
9  None  09 198.152.169.238 (Switch B) 
						

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On Switch A
On Switch B
On Switch C
When a call terminates on a line, we search for the unique string associated with that 
line, but we do not replace it. This reforms the digit string back to the way it left the 
originating DEFINITY, and passes the appropriate digits to the DEFINITY at the 
terminating end.Line Search 
StringReplace String
1      01       None (From Switch C)
2      02       None (From Switch C)
3      03       None (From Switch C)
4      04       None (From Switch B)
5      05       None  (From Switch B)
6      06       None (From Switch B)
Line Search 
StringReplace String
7      07       None (From Switch C)
8      08       None (From Switch C)
9      09       None (From Switch C)
4      04       None (From Switch A)
5      05       None (From Switch A)
6      06       None (From Switch A)
Line Search 
StringReplace String
1      01  None (From Switch A)
2      02  None  (From Switch A)
3      03  None (From Switch A)
7      07  None (From Switch B)
8      08  None  (From Switch B)
9      09  None (From Switch B) 
						

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Rerouting calls when IP transmission quality is poor
When transmission quality over the IP network is unacceptable, use AAR or ARS 
with Configuration Manager to reroute calls over private and public telephone 
networks. This is called PSTN Fallback.
Before you startBefore you perform this procedure, complete the following tasks:
•Plan call routing  (page 419)
Creating an IP trunk group  (page 422)
Starting IP Trunk service  (page 432)
Placing a test telephone call  (page 448)
Placing a test telephone call  (page 448)
InstructionsAs an example, let’s administer PSTN Fallback for trunk group 80, which is already 
set up. 
To start PSTN Fallback, begin at the Windows NT desktop:
1  Double-click the Configuration Manager icon.
IP Trunk Configuration Manager appears.
2  Click the QoS tab.
The Quality of Service property page appears.
3  Select Line Pool (trunk group) 80.
4  Click Properties.
The Line Pool Properties dialog box appears.
5  Click Monitor and PSTN Fallback.
IP trunk will now monitor this trunk group and block access if either of the 
service quality criteria are exceeded.
6  Click OK to close the Line Pool Properties dialog box.
7  If you want to change the default criteria used to measure service quality, change 
the settings in the following fields on the QoS tab:
~Sampling Interval (sec)
~Samples to Average (number)
~Packet Loss Threshold (%): Low
~Packet Loss Threshold (%): High
~Round Trip Delay Threshold (msec.): Low
~Round Trip Delay Threshold (msec.): High
8  Click OK to save your changes and close Configuration Manager. 
						

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More informationThe Packet Loss Threshold and Round Trip Delay Threshold fields work like this:
If the value in either High field is exceeded, access to the IP trunk group is 
blocked.
Access to the IP trunk group is only allowed again when the average for both 
measurements drops below the values in the Low field.
Placing a test telephone call
To place a test telephone call to the remote switch over IP trunk service:
1  Contact the switch administrator at the remote site to verify that IP trunk service 
is set up on the remote switch:
~The connection between the MAPD circuit pack and the switch is configured
~Dial plan and routing is administered 
~IP trunk service is started
2  Dial the telephone number of the remote site.
For example, if prior to installing IP trunk you dialed 9, then 011 plus the country 
code followed by the telephone number, then dial the number the same way to test IP 
trunk service.
If your call does not go through, refer to Troubleshooting IP Trunk  (page 448).
Setting up alerts on IP trunks
Whenever something happens on IP trunks that might affect service quality, 
Windows NT™ can display an alert in a popup window. You can select the IP address 
for the alert messages and notify a computer other than the IP trunk display screen. 
NT alerts allow you to monitor IP trunk service on one or more switches.
InstructionsTo set up alerts on the IP trunk server, start at the Windows NT desktop:
1  Go to NT’s Control Panel.
2  Double-click Services.
3  Select Messenger and click Start.
Started appears in the Status column.
4  Select Alerter and click Start.
Started appears in the Status column.
5  Click Close.
To specify the computers on which alerts should be received:
1  Go to NT’s Control Panel.
2  Double-click Server.
3  Click Alerts.
The Alerts dialog box appears.