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APPENDIXD
Provisioning an ISDN Line
This appendix describes ISDN lines and switches, the features available, and how 
to order your ISDN line.
The term provisioning refers to the features that you can order for the ISDN line.
If you are in North America and do not use an NI1 switch, Cisco strongly 
recommends familiarizing yourself with provisioning terminology related to 
other switch types so that communication with your telephone service provider 
goes more smoothly.
Before Ordering an ISDN Line
Before you order an ISDN line, you must decide the following:
Whether to order only data applications or both data and voice applications. 
A data application is one that runs over a B channel of any Cisco 800 series 
router. A voice application is one that runs over the telephone interface of 
Cisco 803 or Cisco 804 routers.
Which data and voice application features you want to order.
Which ISDN switch to use.
If you use a National ISDN-1 (NI1) switch, which capability package, if any, 
to use. A capability package is a set of standardized ISDN line features that 
simplify the ISDN line configuration. 
						

							 
Appendix D      Provisioning an ISDN Line
Before Ordering an ISDN Line
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Data and Voice Applications
You must decide whether to order only data applications or both data and voice 
applications. 
All Cisco 800 series routers support data applications.
Cisco 803 and Cisco 804 routers also support voice applications.
Some telephone service providers charge a lower rate for an ISDN line that 
supports only data applications. 
NoteIf you do not need voice capability on your ISDN line, Cisco recommends 
provisioning your ISDN line for only data applications. 
Data and Voice Application Features
After you decide which applications to order, you must decide the features you 
want. Ta b l e D - 1 describes the data application features supported by the 
ISDN BRI line, and Ta b l e D - 2 describes the voice application features. 
Contact your telephone service provider to find out if any of these features require 
an additional fee and the amount of the fee.
Table D-1 ISDN BRI Data Applications
Feature Description
Caller ID calling party identification Identifies the remote system that 
originated the call.
Subaddressing Provides locally addressed terminals 
within a specific ISDN access area. 
						

							 
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Appendix D      Provisioning an ISDN Line
Before Ordering an ISDN Line
The data and voice applications described in this section might be referred to by 
different names, depending on the telephone service provider. The terms can 
differ even within a country. Ta b l e D - 3 lists the names and codes that could be 
used by telephone service providers outside of North America.
Table D-2 ISDN BRI Voice Applications
Feature Description
Speech/3.1-kHz audio-bearer 
capabilityCisco 803 and Cisco 804 routers support 
voice applications.
Multiple subscriber numbers (MSN) Supports multiple directory numbers on 
the same ISDN line. Each piece of 
terminal equipment is assigned its own 
directory number.
Call holding and retrieving A call in progress can be put on hold and 
then retrieved.
Call waiting During a voice call, the call-waiting tone 
is generated when a second voice call is 
received.
Call bumping When two data calls are in progress and 
additional call offering (ACO) is 
provisioned, the router either ignores a 
voice call or disconnects a data call to 
accept the voice call. (Also referred to as 
voice priority.) 
Call transferring Transfers an active call to another 
telephone number.
Three-way call conferencing Adds a third party to an existing call.
Call forwarding Forwards an incoming call to a third 
party.
Caller ID, calling party 
identificationIdentifies the billing number associated 
with the line that originated the call.
Caller ID Displays telephone number of remote 
system that originated the call on a device 
connected to a telephone port. 
						

							 
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Before Ordering an ISDN Line
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ISDN Switch Types
Geographic location determines the switch types that are available. The following 
sections describe the switch types available in North America and outside of 
North America.
North American ISDN Switches
The Cisco 800 series routers support the following switches in North America:
National ISDN-1 (NI1) switches comply with ISDN standards. Lucent, 
Northern Telecom (Nortel), and other manufacturers support these standards.
NoteSwitches that comply with the NI1 standard provide the best 
performance with the call-bumping feature. If you order this feature, 
Cisco recommends using an NI1 switch.
Lucent 5ESS custom switches can run in either custom mode or NI1 mode. In 
custom mode, the switch can operate in either a point-to-point or a multipoint 
configuration. Point-to-point configuration supports one piece of terminal 
equipment on the BRI line and does not require service profile identifiers 
(SPIDs). Multipoint configuration supports multiple pieces of terminal 
equipment on the same BRI line and requires SPIDs.
NoteWhen ordering a Lucent 5ESS ISDN line to support multiple voice 
calls, provision the line for call appearances 1 and 2.
Table D-3 ISDN Terms Used Outside the North America
North America Name Other Names Code
Call hold and retrieve Call hold CH HOLD
Call waiting Anklopfen
1
1. Germany only
CW
Multiple subscriber numbers Extended addressing
Selection directe a l’arriveSDA MSN 
						

							 
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Appendix D      Provisioning an ISDN Line
Before Ordering an ISDN Line
Nortel DMS-100 custom switches support a custom mode used with older 
terminal equipment.
International Switches
Cisco 800 series routers support most ISDN BRI lines outside North America, 
which generally use one of the following switch types:
EURO-ISDN
1TR6
VN3
TPH
Nippon Telegraph and Telephone (NTT)
NoteThe Cisco 800 series routers support 1TR6 switches for data applications only. 
The routers do not support 1TR6 switches for voice applications.
NI1 Capability Packages and National ISDN Ordering Codes
A capability package is a set of standardized BRI line features that simplify the 
process of configuring an ISDN line that is connected to an NI1 switch. The 
capability package ordering codes (also referred to as ISDN Ordering Codes 
(IOCs) described in this section apply to NI1 switches.
NoteCisco 803 and Cisco 804 routers require two SPIDs for the telephone ports to 
operate simultaneously, so that you can have a data and a voice call at the same 
time. If a line is assigned only one SPID, the analog telephone ports cannot 
operate simultaneously.
If you are not using an NI1 switch, you must order your ISDN line configured as 
described in the “Other Switches” section later in this appendix.
If you have any problems with your ISDN NI1 provisioning, contact Cisco ISDN 
Support Services (U.S. only). To access this service or to obtain more 
information, call (800) 553-NETS (6387) and select the Customer Service option. 
						

							 
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Other Switches
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Capability Package R
Package R provides circuit-switched data on both B channels (no voice 
capabilities). Data capabilities include calling number identification. Cisco 
recommends this NI1 capability package for Cisco 801 and Cisco 802 routers. 
Capability Package S
Package S provides alternate voice and circuit-switched data with no additional 
features. Cisco recommends this NI1 capability package for Cisco 803 and 
Cisco 804 routers when you want a minimum feature set.
Capability Package EZ-1 or U
Package EZ-1 provides alternate voice and circuit-switched data with all the 
features and capabilities of the router enabled. Cisco recommends this NI1 
capability package for Cisco 803 and Cisco 804 routers when a full feature set is 
needed. The features include flexible calling (three-way call conferencing, call 
transfer, call hold and retrieve), ACO (call waiting), and call forward variable 
(CFV).
EZ-1, EZ-ISDN 1, and U refer to the same capability package.
Other Switches
This section contains provisioning summaries for other switches. Each summary 
is a list of codes used by the telephone service provider when installing and 
configuring your line. When you order your ISDN line, photocopy the appropriate 
summary for your ISDN switch type, and attach it to your order form, which will 
ensure that your ISDN line is ordered correctly.
The term provisioning refers to the features that can be ordered and configured on 
the ISDN BRI line before terminal equipment, such as the router, can use the 
features.
Cisco recommends using the BRI switch provisions listed in the “Lucent 5ESS 
Custom Provisioning” and “Nortel DMS-100 Custom Provisioning” sections in 
this appendix to support voice priority on one BRI B channel. 
						

							 
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Appendix D      Provisioning an ISDN Line
Other Switches
Ta b l e D - 4 provides a list of commonly used ISDN terms and their definitions that 
you might find helpful when deciding how to provision your ISDN line and when 
ordering your ISDN line.
Table D-4 ISDN BRI Line Provisioning Terms
Term Definition
CSD Circuit-switched data—Number of B channels that can be 
simultaneously connected for circuit-switched data calls.
CSD CHL Circuit-switched data channel—B channels used for data calls.
CSD LIMIT Circuit-switched data limit—Number of data calls made 
simultaneously.
CSV Circuit-switched voice—Number of B channels 
simultaneously connected for voice calls.
CSV ACO Circuit-switched voice additional call offering—Indicates an 
additional call when the B channel is being used.
CSV CHL Circuit-switched voice channel—B channels used for voice 
calls.
CSV LIMIT Circuit-switched voice limit—Number of voice calls made 
simultaneously.
CSV 
NBLIMITCircuit-switched voice notification busy limit—Number of 
additional voice calls allowed.
EKTS  Key system option—Whether or not a key system is being 
used. (In a key system, multiple telephone numbers are shared 
across terminals.)
MAXB CHL Maximum B channels—Number of B channels used 
simultaneously.
MTERM Maximum terminals—Number of terminals active on the BRI 
line.
TERMTYP Terminal type—Terminal type used on the BRI line. Valid 
types for NI1 switches are Type A and Type C.  
						

							 
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Other Switches
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Lucent 5ESS Custom Provisioning
Ta b l e D - 5 lists the provisioning summary for Lucent 5ESS custom switches.
Table D-5 Lucent 5ESS Custom Switch Provisioning Summary
Line Provision Configuration
2B1Q line code
1 N/A
2B&D line N/A
B1 Circuit-switched data or voice/data
2
B2 Circuit-switched data or voice/data3
D Signaling only
MTERM 1
MAXB CHNL 2
ACT USR Y
CSD 2 
CSD CHL Any
TERMTYP Type A
DISPLAY Y
CA PREF 1
CA PREF 1
CA PREF 1 
						

							 
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Appendix D      Provisioning an ISDN Line
Other Switches
NoteIncoming voice priority is not available with Lucent 5ESS custom switches.
You can order the following additional features with the Lucent 5ESS custom 
switch:
Caller ID, calling party identification
Call forwarding
Call pickup
Nortel DMS-100 Custom Provisioning
Ta b l e D - 6 lists the provisioning summary for DMS-100 custom switches. Some 
telephone service providers do not support additional call offering U (ACOU). If 
your service provider does not support ACOU, use the provisioning summary 
listed in Ta b l e D - 7. Call transfer Y
Three-way call conferencing Y
1. Order this line provision when connecting the router to the U interface.
2. If you do not need voice capability, provision B1 for data only.
3. If you do not need voice capability, provision B2 for data only.
Table D-5 Lucent 5ESS Custom Switch Provisioning Summary (continued)
Line Provision Configuration
Table D-6 Nortel DMS-100 Custom Provisioning Summary
(ACOU Supported)
Line Provision Configuration
2B1Q line code 
1
2B&D line N/A
Version to Functional Signaling N/A
Issue 2 (NI1) N/A
Call transfer Yes 
						

							 
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Other Switches
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Three-way call conferencing Yes
TEI Dynamic
CS Yes
EKTS No
Set Option Key 1-ACOU 1
Key 2-AFC
1. Order this line provision when connecting the router to the U interface.
Table D-7 Nortel DMS-100 Provisioning Summary (ACOU Not Supported)
Line Provision Configuration
2B1Q line code 
1
1. Order this line provision when connecting the router to the U interface.
2B&D line N/A
Version to functional signaling N/A
Issue 2 (NI1) N/A
TEI Dynamic
CACH No
CS Yes
Call transfer Yes
Three-way call conferencing Yes
EKTS Yes
Set option 2 call appearances
Table D-6 Nortel DMS-100 Custom Provisioning Summary
(ACOU Supported) (continued)
Line Provision Configuration