While the information in this manual has been compiled with great care, it may not be deemed an assurance of product
characteristics. LANCOM Systems shall be liable only to the degree specified in the terms of sale and delivery.
The reproduction and distribution of the documentation and software supplied with this product and the use of its contents
is subject to written authorization from LANCOM Systems. We reserve the right to make any alterations that arise as the
result of technical development.
Windows®, Windows 7, Windows Vista™, Windows NT® and Microsoft® are registered trademarks of Microsoft, Corp.
The LANCOM Systems logo, LCOS and the name LANCOM are registered trademarks of LANCOM Systems GmbH. All other
names or descriptions used may be trademarks or registered trademarks of their owners.
Subject to change without notice. No liability for technical errors or omissions.
Products from LANCOM Systems include software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http:/
/www.openssl.org/).
Products from LANCOM Systems include cryptographic software written by Eric Young (eay@cryptsoft.com
).
Products from LANCOM Systems include software developed by the NetBSD Foundation, Inc. and its contributors.
Products from LANCOM Systems contain the LZMA SDK developed by Igor Pavlov.
LANCOM Systems GmbH
Adenauerstr. 20/B2
52146 Wuerselen
Germany
www.lancom.eu
Wuerselen, August 2010
11
Page 4
LANCOM VoIP Routers: PBX Functionalities
Preface
Preface
Thank you for your confidence in us!
LANCOM Business-VoIP-Routers offer innovative all-round solutions that
integrate data and voice applications with basic PBX functions in a single
compact device. The range of interfaces available enables a LANCOM
Business-VoIP-Router to provide connections for ISDN or analog telephones,
and fax machines. The LAN interfaces allow additional SIP telephones or
softphones in the internal network to be connected up as well.
LANCOM Routers provide PBX functions via Voice over IP, making them a
technically mature alternative to conventional ISDN PBXs. They are ideal for
smaller companies, branch offices and telecommuters. Even if the Internet
connection should fail, calls can still be made to the PSTN via an ISDN or
analog interface. What's more, internal SIP users can be called from landlines
by using standard telephone numbers. In this way, home offices and smaller
sites can be cost-effectively equipped with a standardized telephony system
based on SIP.
EN
Model
restrictions
Model variants
This manual applies for all LANCOM Business-VoIP-Routers (1722, 1723,
1724 and 1823 VoIP).
Passages applying only to certain models are identified either in the text itself
or by a comment in the margin.
Otherwise the documentation refers to all models collectively as LANCOM
Business-VoIP-Routers.
Components of the documentation
The documentation of your device consists of the following parts: The
installation guide, the user manual and the reference manual. This additional
documentation of the PBX functions is dedicated to the setup and operation
of the LANCOM Business-VoIP-Routers.
All other information including the technical specifications, Internet-access
configuration or technical background information is available from the user
manual for your model or from the reference manual on the supplied data
medium (CD/DVD).
3
Page 5
LANCOM VoIP Routers: PBX Functionalities
Contents
Contents
1 Introduction6
2 Hardware installation7
2.1 LANCOM 1723 VoIP and LANCOM 1823 VoIP7
2.2 LANCOM 1722 VoIP9
EN
2.3 LANCOM 1724 VoIP11
3 Configuring the VoIP functions14
3.1 This is how you draw up a dialing plan14
3.1.1 PBX users14
3.1.2 Hunt groups16
3.2 This is how you configure the LANCOM Business-VoIP-Router as a
PBX16
3.3 This is how you configure your telephones and terminal equipment
23
3.3.1 Analog telephones23
3.3.2 ISDN telephones23
3.3.3 SIP telephones24
3.3.4 Software telephones (SIP softphones)26
3.3.5 Analog Terminal Adapters (ATAs)26
4 PBX functions in the LANCOM Business-VoIP-Router28
4.1 Call forwarding28
4.1.1 Spontaneous call management by the user29
4.1.2 Configure permanent call forwarding31
4.2 Hunt groups with call distribution34
4.3 Multi-login36
4.4 Calling Line Identification Restriction (CLIR)37
4
Page 6
LANCOM VoIP Routers: PBX Functionalities
Contents
5 Installing the LANCOM VoIP-Option39
5.1 Requirements for installation39
5.1.1 System requirements39
5.1.2 Package content39
5.1.3 Configuration computer with the Windows operating sys-
tem39
5.1.4 Up-to-date LANconfig40
5.1.5 Up-to-date firmware in the LANCOM40
5.2 Online registration40
5.3 Activating the LANCOM VoIP- Option41
5.4 Checking the activation42
6 Extended functions43
6.1 Setting up call forwarding in the telephone exchange43
EN
6.2 Life-line support for ISDN telephones45
6.3 Messages about calls47
5
Page 7
LANCOM VoIP Routers: PBX Functionalities
Chapter 1: Introduction
1Introduction
LANCOM Business-VoIP-Routers can provide small companies or subsidiaries
with all of the functions of a classical private branch exchange (PBX).
Connection of telephones and fax machines (ISDN or analog)
Internal telephone calls between all connected subscribers
Telephony functions such as call hold, swap, connect or call transfer
EN
(redirect calls)
Hunt group function with flexible call distribution and cascading of hunt
groups
Along with these functions familiar from ISDN PBXs, the LANCOM
Business-VoIP-Router can also utilize all of the advantages of modern VoIP
infrastructure:
Choice of telephony via analog, ISDN or SIP (e.g. Internet telephony)
Integration of SIP telephones and softphones
Telephony between sites by using SIP via VPN
Automatic directing of calls with intelligent call routing
Configuration of dispersed PBXs by one central IT department
This documentation assumes that the basic configuration for your LANCOM
device (Internet access, security settings) has been carried out already. The
manual on PBX functions of LANCOM Business-VoIP-Routers deals with the
following subjects:
Making calls with telephones and softphones
Connecting the LANCOM Business-VoIP-Router to the telephone network
Connecting terminal equipment to the LANCOM Business-VoIP-Router
Configuring the PBX functions
Activation of the VoIP-32 Option
This description is limited to a description of operating the LANCOM
Business-VoIP-Router as a "stand-alone" PBX. For information on
other LANCOM Business-VoIP-Router issues such as the combination
with existing ISDN PBX systems, connection to an upstream SIP PBX,
configuring SIP trunks, or similar matters, please refer to your
product's user manual and/or the reference manual.
6
Page 8
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
2Hardware installation
This chapter explains how to connect the LANCOM Business-VoIP-Router to
the telephone network and how to connect terminal equipment to the
LANCOM Business-VoIP-Router.
The connections described relate to the operation of the LANCOM BusinessVoIP-Router as a "stand-alone" PBX. The devices can be connected in
different manners, and information about these options can be found in the
appropriate user manual and/or in the LCOS reference manual.
LANCOM Business-VoIP-Routers feature an ISDN interface and a number of
LAN connectors, making them suitable for a simple SIP telephone
infrastructure.
2.1LANCOM 1723 VoIP and LANCOM 1823 VoIP
EN
The VoIP routers LANCOM 1723 VoIP and LANCOM 1823 VoIP feature two
ISDN interfaces, two LAN interfaces, two connectors for analog terminal
devices and the option to connect an analog line to the exchange. This range
of options is capable of supporting a sophisticated telephony infrastructure.
To operate in this mode, the DIP switches on the underside of the
LANCOM 1723 VoIP and LANCOM 1823 VoIP devices must be in the
following positions: DIP switches 1 to 8 in the up position, DIP
switches 9 and 10 down. This is the ex-factory setting. Check the
position of the DIP switches and set them correctly if necessary.
Before altering the DIP switch settings, remove all cables from their
sockets and switch the device off.
Remove the see-through cover over the DIP switch.
We suggest that you use a screwdriver to set the DIP switch to the
desired position.
Replace the see-through cover and reconnect the cables as described
for your model in the user manual and as described in the following
sections.
7
Page 9
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
Example:
LANCOM 1723 VoIP
EN
DC12V
ETH1ETH2
ConfigUSB(COM)
ISDN1/Analog(⌧)ISDN2Analog1 ()Analog2 ()
ADSL(2+)
Reset
Connecting to the LAN – First of all connect your LANCOM Business-
VoIP-Router to the LAN. Plug in one end of the supplied network cable
(green connectors) to a LAN connector on the device , and the other
end into an available network connector socket in your local network or a
free socket on a switch or hub.
Connect the telephones and fax machines
Connect your SIP telephones to a network connection socket in your
local network, or to a switch/hub that is connected to your LAN.
Softphones are installed on the PCs, which are connected to the LAN.
Analog devices (fax machines or DECT telephones) are connected to
the LANCOM Business-VoIP-Router via the analog interfaces
(RJ11 socket marked with
). For example, connect a DECT
telephone with answering machine to Analog 1 and a fax machine to
Analog 2.
If your terminal equipment features a TAE-F or TAE-N connector,
please use the supplied adapter cable (RJ11 plug to TAE-N/F socket).
If necessary, further analog equipment can be connected to the LAN
by means of an Analog Terminal Adapter (ATA).
ISDN telephones can be connected to the ISDN 2 interface either
directly or via the ISDN bus of an ISDN PBX.
For the models LANCOM 1723 VoIP and LANCOM 1823 VoIP, never
use the interface ISDN 2 to connect to the ISDN network
(exchange)!
Connecting to the public services telephone network
The models LANCOM 1723 VoIP and LANCOM 1823 VoIP can be
connected either to the ISDN network or to the analog telephone
network:
8
Page 10
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
Connecting to the ISDN – to connect the LANCOM Business-VoIP-
Router to the ISDN, plug in one end of the supplied ISDN cable (lightblue connectors) to the combined ISDN/analog interface . Plug in
the other end of the ISDN cable into an ISDN/S
point-to-point line
0
connector or point-to-multipoint line connector.
Connecting to the analog telephone network—to connect the
LANCOM Business-VoIP-Router to the analog telephone network,
plug the end of the supplied analog connector cable marked in yellow
(RJ45) into the combined ISDN/analog interface . The other end of
the analog connector cable (RJ11) is to be plugged into an analog
exchange line (e.g. a splitter). If the exchange line has a TAE-N/F
socket, you can use the supplied adapter (RJ11 plug to TAE plug).
Connections LANCOM 1723 VoIP
EN
LANCOM ES-1108P
phone
SIP Client (Softphone)SIP
Fax
2.2LANCOM 1722 VoIP
The VoIP routers LANCOM 1722 VoIP feature two ISDN and four LAN
interfaces, making them ideal for establishing SIP telephone infrastructures
that feature four parallel ISDN channels for incoming and outgoing calls to the
public telephone network.
DECT
ETH2
ETH1
USB
Config (CO
M)
Analog2
()?
ISDNISDN
Analog1 ()?
LANCOM 1723 VoIP
ISDN2 (
)?
ISDN1/Analog ( )?
ADSL 2+
Analog Line
On
Off
1 2 3 4 5 6 7 8 9 10
NTBA
ISDN Line
To operate in this mode, all 10 of the DIP switches on the underside
of the LANCOM 1722 VoIP must be in the down position! Set the DIP
9
Page 11
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
switches 1 to 8—supplied ex-factory in the up position—to the down
position.
Before altering the DIP switch settings, remove all cables from their
sockets and switch the device off.
Remove the see-through cover over the DIP switch.
We suggest that you use a screwdriver to set the DIP switch to the
desired position.
EN
Replace the see-through cover and reconnect the cables as described
for your model in the user manual and as described in the following
sections.
LANCOM 1722 VoIP
DC12V
ETH3ETH4ETH2ETH1
ConfigUSB(COM)
ISDN 1 (⌧)ISDN 2 ()
ADSL(2+)
Reset
Connecting to the LAN – First of all connect your LANCOM 1722 VoIP
to the LAN. Plug in one end of the supplied network cable (green
connectors) to a LAN connector on the device , and the other end into
an available network connector socket in your local network or a free
socket on a switch or hub.
Connect the telephones and fax machines
Connect your SIP telephone to a free LAN interface on the LANCOM
1722 VoIP or to a switch/hub connected to your LAN.
Softphones are installed on the PCs, which are connected to the LAN.
Analog terminal equipment such as fax machines or DECT telephones
can be connected to the LAN by using an Analog Terminal Adapter
(ATA).
In this example we will not discuss the connection of ISDN telephones
because both ISDN interfaces on the LANCOM 1722 VoIP are used to
connect to the public telephone network.
Connecting to the ISDN network
To be able to use all four ISDN channels for calls via the public telephone
network, use the ISDN cross-over adapter (supplied) to plug a separate
ISDN connector cable into the ISDN 1 interface . Plug in the other end
10
Page 12
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
of this cable into an ISDN/S0 point-to-point line connector or point-tomultipoint line connector.
Plug one end of the supplied ISDN connector cable (light-blue connectors)
into the ISDN 1 interface . Plug in the other end of the ISDN cable into
an ISDN/S
point-to-point line connector or point-to- multipoint line
0
connector.
Connections LANCOM 1722 VoIP
SIP phone
SIP Client (Softphone)
Fax
2.3LANCOM 1724 VoIP
DECT
ATA
ETH4
ETH3
ETH2
ETH1
cross-over adapter
2xS
On
Off
1 2 3 4 5 6 7 8 9 10
0
USB
Config (CO
LANCOM 1722 VPN
M)
ISDN2 ( )?
ISDN1( )?
EN
NTBA
ADSL
ISDN Line
The VoIP routers LANCOM 1724 VoIP feature two LAN and four ISDN
interfaces, making them ideal for establishing larger SIP telephone
infrastructures that feature up to eight parallel ISDN channels for incoming
and outgoing calls to the public telephone network.
Before altering the DIP switch settings, remove all cables from their
Remove the see-through cover over the DIP switch.
To operate in this mode, all 10 of the DIP switches on the underside
of the LANCOM 1724 VoIP must be in the down position! Set the DIP
switches 1 to 4—supplied ex-factory in the up position—to the down
position.
sockets and switch the device off.
11
Page 13
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
We suggest that you use a screwdriver to set the DIP switch to the
desired position.
Replace the see-through cover and reconnect the cables as described
for your model in the user manual and as described in the following
sections.
LANCOM 1724 VoIP
EN
DC12V
ETH1ETH2
ConfigUSB(COM)
ISDN 1 (⌧)ISDN 2 (⌧)ISDN 3 ()ISDN 4 ()
ADSL(2+)
Reset
Connecting to the LAN – First of all connect your LANCOM 1724 VoIP
to the LAN. Plug in one end of the supplied network cable (green
connectors) to a LAN connector on the device , and the other end into
an available network connector socket in your local network or a free
socket on a switch or hub.
Connecting to the ISDN network
To be able to use all eight ISDN channels for calls via the public telephone
network, use the ISDN cross-over adapters (supplied) to plug two
separate ISDN connector cables into the ISDN 3 and ISDN 4 interfaces .
Plug in the other end of this cable into an ISDN/S
point-to-point line
0
connector or point-to-multipoint line connector.
Plug one end of each supplied ISDN connector cable (light-blue
connectors) into the ISDN 1 interface and ISDN 2 interface . Plug in the
other end of each ISDN cable into an ISDN/S
point-to-point line
0
connector or point-to-multipoint line connector.
Connect the telephones and fax machines
Connect your SIP telephones to a network connection socket in your
Softphones are installed on the PCs, which are connected to the LAN.
Analog terminal equipment such as fax machines or DECT telephones
In this example we will not discuss the connection of ISDN telephones
12
local network, or to a switch/hub that is connected to your LAN.
can be connected to the LAN by using an Analog Terminal Adapter
(ATA).
because all four ISDN interfaces on the LANCOM 1724 VoIP are used
to connect to the public telephone network.
Page 14
Connections LANCOM 1724 VoIP
A
LANCOM ES-1108P
LANCOM VoIP Routers: PBX Functionalities
Chapter 2: Hardware installation
SIP phone
SIP Client (Softphone)
Fax
DECT
ATA
ETH2
ETH1
ETH4
USB
Config (CO
ETH3
cross-over adapter
On
Off
1 2 3 4 5 6 7 8 9 10
M)
4 xS
ISDN 4 (
)?
0
ISDN 3 ( )?
LANCOM 1724 VoIP
ISDN2 ( )?
ISDN
1( )?
ISDN Line
NTB
ADSL 2+
EN
13
Page 15
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
3Configuring the VoIP functions
Prerequisites for the configuration of the VoIP functions in a LANCOM
Business-VoIP-Router are suitable basic settings and a functional Internet
connection. To this end, please ensure that you use the Wizards in LANconfig
to configure the basic settings, the Internet connection and the security
settings before you configure VoIP.
EN
3.1This is how you draw up a dialing plan
The planning of telephone infrastructure can be greatly helped by drawing up
precise details on the connections, their telephone numbers and any hunt
groups that may be required, as this information is important to the
configuration. To help you with this, you should fill out the table (below)
before you begin with the configuration.
3.1.1PBX users
Users are all of the devices for tele(phonic) communications, i.e. ISDN and
analog telephones, SIP telephones, computers with software telephones, or
fax machines. As a rule, every user receives its own internal telephone number
that can be accessed from within the company. If necessary, multiple devices
can share the same telephone number (’Multi-login’ →Page 36).
Use a uniform number format so as to avoid problems with the
processing of internal telephone numbers, e.g. use two- or three-digit
numbers only.
The external telephone number is used to reach the user from the PSTN (public
services telephone network). At ISDN point-to-multipoint connections these
numbers are referred to as MSNs (Multiple Subscriber Numbers). At an ISDN
point-to-point connection you enter the direct-access telephone number
(DDI, Direct Dialing-In). You should then enter the type of device and
connection.
The following table provides an overview of the allocation of users to hunt
groups (’Hunt groups’ →Page 16), which suffices for many applications.
14
Please observe the maximum number of users permissible for your
LANCOM model.
Page 16
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
Internal
Telephone
number
10 (hunt group)
11
12
13
14
15
16
17
18
19
20 (hunt group)
21
22
User or group
name
Ext. tel. number/
MSN/DDI
Device type
(Telephone,
Fax)
Connection (SIP,
ISDN, analog)
EN
23
24
25
26
27
28
29
30 (hunt group)
31
32
33
34
35
36
37
38
39
15
Page 17
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
3.1.2Hunt groups
A hunt group collects two or more users who/which should be reached under
a single telephone number. For example, a hunt group can be used to dial all
of the staff within a department (’Hunt groups with call distribution’
→Page 34). Apart from its members, a hunt group can also be set with the
manner of call distribution, a time period after which (unanswered) calls are
forwarded, and a number as the target for call forwarding.
EN
Hunt groupCommentMembersDistributionForwarding
10
20
30
time
Forwarding
target
3.2This is how you configure the LANCOM BusinessVoIP-Router as a PBX
Under LANconfig, start the setup wizard for configuring the VoIP Call
Manager.
Choose the option 'Select connections from a multiplicity of possibilities'.
16
Page 18
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
Under 'Lines', activate the exchange line over which you telephone via the
PSTN (public services telephone network): ISDN or analog connection. If
your model features both analog and ISDN interfaces, please observe that
you can only activate one of these two options.
You then select the type of telephones that are to be used: SIP, ISDN or
analog users (analog users are not available on all models).
EN
Set the country in which the LANCOM Business-VoIP-Router is to be
operated.
The local VoIP domain can be left as 'internal', unless a different domain
is required for operation with another system (in most cases this is
unnecessary).
17
Page 19
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
You then activate your ISDN or analog connection for voice
communications, so that you can use this connection to telephone to the
public telephone network.
With an ISDN connection, you can select which of the available ISDN
interfaces is to be used for external telephone calls.
For an analog connection, you can define the internal telephone number
(or hunt group) that incoming calls are to be forwarded to.
EN
Depending on the model, the wizard may ask you to set the protocol
required by the ISDN interfaces for external telephony. Set the protocol for
each interface to 'Auto (TE only)'.
If you use an ISDN connection to telephone via the public telephone
network, you can give every external telephone number (MSN or DDI) a
corresponding internal telephone number. Use the allocation in your
dialing plan to help you with this. At the same time, if applicable, you
select the ISDN interface over which these external telephone numbers
receive calls. If multiple ISDN interfaces to the exchange line have been
configured as point-to- point connections, then you also have to select
each DDI that corresponds to these interfaces.
In case you wish to use an MSN or DDI as a central telephone number
for a group of subscribers (hunt group), then with the help of your
dialing plan you can enter the internal telephone number for the
group here, e.g. '10' to reach the subscribers '11', '12', '13', etc.
18
Page 20
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
EN
You can skip the configuration of SIP users, assuming that you do not
require the SIP users to register with user name and password.
If your model has free ISDN interfaces for connecting ISDN terminal
equipment, you can select which of these interfaces are to be used for
connecting internal terminal devices.
Depending on the model, the wizard may ask you to set the protocol
required by the ISDN interfaces to connect these internal terminal devices.
The protocol should be set to 'DSS1 NT' for point-to-multipoint
connections (if, for example, you wish to connect individual telephones
directly to the corresponding interface) or to 'DSS1 NT point to point' for
point-to-point connections.
19
Page 21
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
For each ISDN terminal device that is connected, you can define the
corresponding internal telephone number and the associated external
MSN or DDI. At the same time you select the ISDN interface that the
EN
terminal device is connected to.
If your model has analog interfaces for connecting analog terminal
equipment, you can select which of these interfaces are to be used for
connecting internal terminal devices.
For each analog terminal device that is connected you can define the
corresponding internal telephone number. At the same time you select the
analog interface that the terminal device is connected to. Please ensure
that you also select the device type: 'Phone', 'Fax' or 'Phone and/or fax'
(in case you have a combination device or if phone and fax are connected
to an analog adapter).
20
Page 22
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
In the following stages the call router is set up to control the processing
of incoming and outgoing calls. First of all you can select whether to
precede external calls with a zero. Spontaneous outside line access means
that no leading zero is required. This can be set separately for ISDN and
analog users.
EN
Typically you will want to make calls to other people in your company
If you do decide to use spontaneous outside line access, the wizard also
simply by entering their extension number directly. This is only
possible if you do not use spontaneous outside line access.
When using the LANCOM Business-VoIP-Router as a PBX, we recommend
that you deactivate spontaneous outside line access. This ensures that the
leading zero for external calls has to be entered, a procedure that is
familiar to users of conventional PBXs.
provides this for SIP users so that all telephones are operated in the same
way.
When spontaneous outside line access is activated, the wizard
generates dialing rules to enable you to call internal numbers by
entering a leading asterisk, e.g. '*11'.
21
Page 23
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
Entering your national and area code enables the Call Router to handle
EN
local or national calls in certain ways.
Once the configuration is completed, the wizard displays an overview of
the call routes that are to be generated. Further information on the
function of call routes and their significance is available in the LCOS
reference manual.
Well done! You have configured the LANCOM VoIP Router as the local
PBX. Please observe the following information to set up the various
terminal devices.
22
Page 24
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
If your dialing plan foresees the use of hunt groups, these still have to
be entered into the configuration manually (’Hunt groups with call
distribution’ →Page 34).
3.3This is how you configure your telephones and
terminal equipment
Apart from configuring the LANCOM Business-VoIP-Router itself, some
setting up of the terminal equipment is also necessary to ensure that it
remains fully functional in the telephone network.
3.3.1Analog telephones
Analog telephones use the Flash key (F key) to control certain functions.
Pressing the F (or Flash-) key causes the line to be interrupted briefly. The PBX
detects this flash and interprets any following tones not as numbers but as
control signals intended for the PBX.
The duration of this interruption plays a significant role in the triggering of
control sequences. LANCOM Business-VoIP-Routers expect a "short" flash of
80 to 150ms. Many devices are preset to use the "long" flash of 170 to
310 ms.
For this reason you should set your analog telephone to use the short flash.
Many devices allow this value to be adjusted in a menu under Settings PBX Flash. If your model allows an explicit flash duration to be defined,
set the flash-time value to 100 ms.
EN
3.3.2ISDN telephones
The use of ISDN telephones requires the configuration of the MSN in the
terminal device. To make use of PBX functions in the LANCOM Business-VoIPRouter, the parameters "ECT" and "Keypad" have to be checked and/or set.
If necessary, please refer to the documentation for your device for
information on these settings.
If necessary, please refer to the documentation for your device for
information on these settings.
23
Page 25
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
MSN setting
By entering an MSN into an ISDN telephone, you define the telephone number
that the phone is to react to and the telephone number that is transmitted to
the user being called.
The MSN for your ISDN telephone should be the telephone number that you
have entered for the ISDN user under 'MSN/DDI'. In many devices, this setting
is to be found in the menu under Telephone settings MSN.
EN
Not to be entered as the MSN is the internal telephone number! Using
ECT setting
ECT (Explicit Call Transfer) is the spontaneous connection of two active calls
by the user: If you are conducting two conversations, you can transfer the two
callers so that they can then communicate with each other (’Spontaneous call
management by the user’ →Page 29).
To use this switching option in combination with the LANCOM Business-VoIPRouter, you should activate automatic ECT in your ISDN telephone. Many
devices allow this value to be adjusted in a menu under Telephone settings
PBX Functions Auto. ECT.
Keypad setting
For ISDN telephones, control sequences use the # and * characters (known as
"keypads") to to activate/deactivate features at the exchange such as
automatic call forwarding (call redirection) or callback on busy. Pressing keys
during a call normally generates DTMF tones, which can be used to control
remote computers, for example.
the external MSN/DDI enables the ISDN telephone to continue
operating even in case the LANCOM Business-VoIP-Router should fail
(’Life-line support for ISDN telephones’ →Page 45).
To prevent control sequences for features from being transmitted as DTMF
tones, activate automatic keypad transmission for your ISDN telephone. Many
devices allow this value to be adjusted in a menu under Telephone settings
PBX Functions Keypad.
3.3.3SIP telephones
Similar to ISDN telephones, SIP telephones also require a setting for the
telephone number that the device is to react to. If the LANCOM business VoIP
24
Page 26
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
router operates as the DHCP and DNS server in the LAN and local
authentication is switched off (default setting), then a SIP telephone that finds
the SIP realm by DNS only requires this number in order to register.
It is very easy to set up the telephone number on a telephone that
supports LANCOM Easy Setup: After starting the SIP telephone in its
factory settings, it may be necessary to make some basic settings such as
language, time, time zone, etc.
No account has been configured yet, so the device will request that you
enter details for the first SIP account. All you have to do is to enter the
internal telephone number and confirm. If the device supports LANCOM
Easy Setup, then the setup is complete.
If you have set up the VoIP Call Manager to force the authentication
The SIP phone now tries to register at the LANCOM Business-VoIP-Router
with the number entered. If registration is successful, the telephone displays
its internal telephone number. You can also check the registration in
LANmonitor: All registered users have an entry which displays their current
status.
of local subscribers, then the SIP telephone will request the entry of
the password for the associated account.
EN
If necessary, please refer to the documentation for your device for
information on these settings.
25
Page 27
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
3.3.4Software telephones (SIP softphones)
Enter the registration information for the first SIP user in the softphone
(example for X-Lite).
EN
From the menu, select System Settings
entry for one of the possible lines, e.g. 'Default'.
Enter the following values:
SIP Proxy and choose an
26
Display name: Name of the user as it is to be displayed at the remote
site.
Domain/realm: Internal VoIP domain for the LANCOM.
SIP proxy: Internal VoIP domain for the LANCOM.
User name: Internal number for the user.
If necessary, please refer to the documentation for your softphone for
information on these settings.
3.3.5Analog Terminal Adapters (ATAs)
Analog terminal adapters are used to connect analog terminal equipment
such as DECT telephones or fax machines to the LAN. This method enables
these devices to be integrated into the telephone infrastructure just like SIP
devices. The following parameters have to be set to operate an ATA at a
LANCOM Business-VoIP-Router that functions as a PBX:
The telephone number that the device is to react to.
Page 28
LANCOM VoIP Routers: PBX Functionalities
Chapter 3: Configuring the VoIP functions
Registry information such as registrar, SIP proxy or realm (the naming of
these parameters can vary from device to device):
Here you enter the internal VoIP domain of the LANCOM Business-
VoIP-Router (default: 'internal') if the ATA is to retrieve this
information from the LANCOM Business-VoIP-Router operating as
DHCP and DNS server.
Otherwise you should enter the local IP address of the LANCOM
Business-VoIP-Router.
If you connect a fax machine, select the fax transmission method as
desired or as supported by the ATA.
Where fax signals are to be transmitted like voice data over a VoIP
connection, this is referred to as "fax over VoIP". Fax transmission
requires the use of the compression codec G.711. Accordingly, set this
codec in you ATA.
EN
As an alternative, fax messages can be transmitted using the T.38
standard, meaning that they are not transmitted as voice signals via
VoIP, but rather with a special protocol known as the IFP (Internet
Facsimilé Protocol). If your ATA supports this method, set fax
transmission to T.38 ("Fax over IP" or FoIP).
Further information about faxing with T.38 is available in the LCOS
Now you have found out a great deal about setting up a LANCOM BusinessVoIP-Router as a PBX in combination with a variety of different terminal
equipment.
The following chapters inform you about how you can set up and operate the
PBX functions available with this high-performance installation.
reference manual.
27
Page 29
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
4PBX functions in the LANCOM
Business-VoIP-Router
LANCOM Business-VoIP-Routers can provide small companies or subsidiaries
with all of the functions of a classical private branch exchange (PBX).
Telephony functions such as call hold, swap, connect or call transfer
(redirect calls)
EN
Hunt group function with flexible call distribution and cascading of hunt
groups
Multiple logins to use various telephones under one telephone number
4.1Call forwarding
Call forwarding means that a call that has already been placed is redirected
to a new destination either spontaneously by the user ("call transfer") or by
automatic call forwarding ("redirect call") as set up in advance. Call
forwarding with SIP-based VoIP telephony uses a different technology to that
used formerly, and yet the implementation of this function in the LANCOM
Business-VoIP-Router means that its operation is almost identical for all types
of terminal device.
Call charges for external call forwarding
The transfer of a call from an external caller to a third party who is also
external carries the risk that charges will arise for the ongoing call,
even though the initiating subscriber has ended the call.
28
When forwarding calls from external callers to another external
subscriber (e.g. when forwarding an office number to a mobile phone)
both of the ISDN lines are engaged when the external calls are
directed over a single ISDN line. If your device is connected to the
public telephone network via just two ISDN channels (one ISDN
interface), then no further calls can be made. Alternatively you can try
’Setting up call forwarding in the telephone exchange’ →Page 43.
Page 30
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
4.1.1Spontaneous call management by the user
Functions for spontaneous call management
Calls can be managed on an individual basis and the LANCOM
Business-VoIP-Router supports the services known from the ISDN network:
With call hold the user can place an active call into a wait state. In this
state, the user can for example make a call to another person.
Establishing an additional call while a call is on hold is referred to as
consulting. This call can be ended again and the conversation with the
call on hold continued.
With swap call, the user can switch to and fro between two connections.
The user is only connected with one caller at a time, while the other caller
is put on hold.
With call transfer ("connect call") the user switches an active call over to
another call which is on hold. The two callers are then connected and the
user is no longer involved in the call. A subscriber transferring a call can
either directly hand over an active call to a third subscriber (unattended
call transfer), or a separate call can be made to the third subscriber to
communicate the call and then transfer it (attended call transfer).
Using spontaneous call management with various telephones
SIP telephones and SIP softphones generally feature special keys or menu
entries to manage calls. Depending on the model or program, different terms
may be used the the functions are as follows:
HOLD: Places an active call into a wait mode or swaps between two active
calls. On ISDN and analog telephones this function is often referred to as
the F-key/Flash/Call hold.
EN
HANG UP: End the current call.
SWAP: Swap between two active calls (depending on the ISDN telephone,
this may be initiated by a display-menu entry, a special key, or the "F"
key).
CONNECT: Initiates the call's transfer (can be triggered by "hanging-up"
with an active call and a call on hold)*.
29
Page 31
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
These functions can be used to manage calls as follows:
Holding/consulting and continuing with callsSIPISDNAnalog
To place a call on hold, press the Flash/Call hold key (or 'F' on analog
phones).
The caller can no longer hear you and you can initiate a second call by
dialing a telephone number (consulting).
To continue with a call which is on hold, press the Flash/Call hold key
again (or 'F 2').
EN
If the consultation call has not yet been picked up, you can stop the
consulting by hanging up the handset on a SIP or ISDN telephone*.
You can stop the consultation call with the appropriate menu function of
the telephone (e.g. 'Cancel') or 'F 1' (analog).*
HOLDHOLD or FR
HOLDHOLD or FR 2 or R
HANG UPHANG UPHANG UP
SwapSIPISDNAnalog
To open a second line during a call, first press the Flash/Call hold key (or
'F' on analog phones).
The other caller can no longer hear you.
Dial the number for the second caller while the first call is on hold.
If you cannot reach the second caller, you can return to the call which is on
hold by pressing the hold key (or 'F').
As soon as two simultaneous connections are open, you can use the hold
key (or swap key for ISDN phones, 'R' and '2' for analog phones) to swap
to-and-fro between the two connections.
You will be connected to one of the other callers; the other caller is placed
on hold.
HOLDHOLD or FR
123456789123456789123456789
HOLDSWAPR 2 or R
after a short
delay
after a short
delay
To end an active call, hang up the handset on SIP or ISDN telephones, and
on analog phones press 'F 1'.
The call which is on hold is not automatically reactivated, but it will be
signaled (ringing phone) for a period of 15 seconds.
END or
HANG UP*
END or
HANG UP*
F 1
Call transfer, consultSIPISDNAnalog
To open a second line during a call, first press the Flash/Call hold key (or
'F' on analog phones).
The other caller can no longer hear you.
HOLDHOLD or FR
30
Page 32
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
Call transfer, consultSIPISDNAnalog
Dial the number for the second caller while the first call is on hold.
If you cannot reach the second caller, you can return to the call which is on
hold by pressing the hold key.
As soon as you have established two simultaneous connections you can
connect the two callers with the connect key (or 'F' and '4' on analog
phones) or by hanging up the handset.*
Optionally you can switch between the two lines as often as you like
before transferring. Call transfer always connects the active call and the
call on hold.
You have no more active calls. You can replace the handset.HANG UP HANG UP HANG UP
Call transfer, blindSIPISDNAnalog
To open a second line during a call, first press the Flash/Call hold key.
The other caller can no longer hear you.
Dial the number for the second caller while the first call is on hold. 123456789123456789123456789
Press the connect key (or 'F' and '4' on analog phones) or hang-up the
handset before the second connection has been established.*
The two callers will now be connected "in the background".
You have no more active calls. You can replace the handset.HANG UP HANG UP HANG UP
123456789123456789123456789
CONNECT or
HANG UP*
HOLDHOLDHOLD
CONNECT or
HANG UP*
CONNECT or
HANG UP*
CONNECT or
HANG UP*
R 4 or HANG
UP
R 4 or HANG
UP
EN
*In some cases, SIP or ISDN telephones can be configured so that
hanging-up the handset either causes the consultation or active call
or be terminated, or a call transfer is triggered ("Connect").
4.1.2Configure permanent call forwarding
Along with spontaneous call transfers as controlled by a subscriber during a
call ("connect call", it is often useful to set up a permanent call forwarding
("redirect calls"). For example, a call should be forwarded when a line is busy,
if there is no answer within a certain period, or in case of absence (e.g.
vacation).
There are two possibilities for configuring permanent call forwarding.
Via the telephone or terminal device itself with the aid of control
characters
In the configuration of the LANCOM Business-VoIP-Router by means of
the management tools (LANconfig, WEBconfig or telnet)
If permanent call forwarding is activated by both methods, then the
behavior of the call forwarding follows the last respective action.
31
Page 33
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
The setting for call-forwarding is displayed for each user in LANmonitor with
the symbol shown in the margin. The values set for forwarding target and
delay time can be displayed in the details for each user.
EN
Call forwarding that is configured directly in the exchange (’Setting up
call forwarding in the telephone exchange’ →Page 43) is also not
shown in LANmonitor.
32
Page 34
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
Configuring call forwarding in the LANCOM Business-VoIP-Router
To configure call forwarding in LANconfig, go toVoIP Call Manager Users
User settings:
EN
Select the internal telephone number that call forwarding applies to.
Call forwarding can be set up for all local users (SIP, ISDN or analog).
You can define whether the user at the selected internal telephone
number can alter the settings for call forwarding by means of the terminal
device's keypad.
Under "Forward calls immediately" enter the target telephone number for
immediate call forwarding when a call is made to the intended internal
number.
Under "Forward calls on busy" enter the target telephone number for call
forwarding if the called internal number is busy.
Under "Forward calls on no answer" enter the target number for calls to
be forwarded to in case there is no answer, and enter the delay defining
the how long the telephone rings before the call is forwarded.
Calls can be forwarded to local users, hunt groups, or external
telephone numbers. Enter external telephone numbers as
33
Page 35
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
call-forwarding targets just as you would dial the subscriber from the
local telephone network. If you have deactivated spontaneous outside
line access and you have to dial a zero for outside calls, place a
leading zero before the call forwarding target here as well.
Configuring call forwarding with the telephone
Configuring call forwarding in the LANCOM Business-VoIP-Router from the
EN
telephone uses the following combinations of characters:
Immediate call forwardingSIP, ISDN, Analog
Switch on and define target for call forwarding*21*TargetNo#
Switch off#21#
Switch off temporarily, maintain call- forwarding target #22#
Switch on again, maintain defined call-forwarding
target
Call forwarding on busySIP, ISDN, Analog
Switch on and define target for call forwarding*67*TargetNo#
Switch off#67#
Call-forwarding on no replySIP, ISDN, Analog
Switch on and define target for call forwarding*61*TargetNo#
Switch off#61#
Some ISDN telephones feature special keys or menu entries to
configure call forwarding, and these can be used as an alternative to
the listed character strings. Refer to the documentation from the
corresponding manufacturers.
If your telephone does not feature dedicated command keys, you can
store these commands as speed-dial numbers and store them to
dedicated keys.
*22#
4.2Hunt groups with call distribution
Calls are normally intended for an individual or their telephone number.
Occasionally it is not important to speak to a particular individual, but to
34
Page 36
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
anybody in a certain department or with a certain function. In this case,
telephone infrastructure collects multiple users into hunt groups where they
can all be reached under a single shared telephone number.
To configure call forwarding in LANconfig, go to VoIP Call Manager Call
routerr Hunt groups:
EN
Enter the internal telephone number where the hunt group is to be
reached.
Enter the members of this hunt group with each entry separated by a
comma. Members can be users, hunt groups or external telephone
numbers.
Just like for call forwarding, members' call numbers are to be entered
Set the type of call distribution:
as their internal call numbers. The numbers also have to be entered in
this format if you do decide to use spontaneous outside line access
and internal numbers have to be dialed with a leading "*" symbol. For
example, '*11' with spontaneous outside line access instead of '11'
without.
Simultaneous: The call is signaled to all group members at once. If a
member picks up the call within the call-forwarding time, the call is
no longer signaled to other group members. If nobody accepts the call
35
Page 37
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
within the forwarding time, then the call is switched to its forwarding
target.
Sequential: The call is directed to one member of the group after the
other. If a group member does not accept the call within the
forwarding time, then the call is switched to the next member of the
group. If nobody in the group accepts the call within the forwarding
time, then the call is switched to its forwarding target.
EN
Set the forwarding time. If an incoming call is not picked up by a group
member within the forwarding time, then the call is forwarded according
to the distribution method selected:
In case of simultaneous call distribution, the call is forwarded to the
forwarding target.
In case of sequential call distribution, the call is forwarded to the next
group member in line. If the group member is the last one, then the
call is redirected to its forwarding target.
Finally, enter the forwarding target. If none of the group members accepts
the call within the forwarding time, then the call is switched to the
forwarding target entered here. Forwarding targets can be users, hunt
groups or external telephone numbers.
4.3Multi-login
For subscribers using multiple terminal devices, e.g. a softphone on PC and a
"normal" telephone on the desktop, multiple SIP, ISDN or analog telephones
all using the same internal telephone number can log on to the LANCOM
Business-VoIP-Router. Multi-login telephones behave like a single user in a
hunt group set for 'simultaneous' call distribution (parallel call/twinning):
Incoming calls are signaled simultaneously at all telephones with this
internal number.
As soon as a call is picked up at one of the telephones, signaling at the
other devices stops.
Other incoming calls are signaled at all telephones. If one of the
telephones is 'busy', then the entire multi-login group is taken to be
'busy'.
Outgoing calls can be made from every telephone without limitation.
36
Page 38
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
For a multi-login group only one call forwarding setting (call redirection)
can be configured. This applies to all telephones and can be set from any
telephone.
To use multi-login, multiple telephones can be set to have the same internal
telephone number.
4.4Calling Line Identification Restriction (CLIR)
The CLIR function prevents the transmission of information about the calling
party. This is usually activated directly at the terminal equipment, i. e. in the
SIP phone or softphone, the subscribing user sets whether or not the calling
number is to be displayed to the called party. Often, this behavior can be set
up to occur generally or on a call-by-call basis.
If you activate CLIR in the LANCOM Business-VoIP-Router directly in the user
settings for SIP, ISDN or analog users, the number will always be restricted,
whatever settings the user makes in the terminal equipment.
EN
CLIR is configured in LANconfig under VoIP Call Manager Users SIP
users, ISDN users or Analog users:
In some cases it may be desirable for the caller ID to be retained even if it is
restricted in the telephone or in the user settings. For instance, this is the case
where a SIP provider requires the caller ID for billing purposes.
37
Page 39
LANCOM VoIP Routers: PBX Functionalities
Chapter 4: PBX functions in the LANCOM Business- VoIP- Router
In this case the line to the SIP provider is flagged as belonging to a "trusted
area". Within the trusted area, the caller ID is transmitted in a separate field
(assuming that the privacy method is selected)—even if CLIR is activated in
the telephone or in the LANCOM Business-VoIP-Router user settings. Only
when the call leaves the trusted area (at the last exchange before the remote
subscriber) is the caller ID removed as defined in the telephone or user
settings. This means that the caller ID can be processed within the trusted
area, but it will not be displayed by the remote device.
The privacy method is configured in LANconfig under VoIP Call Manager Lines SIP lines or SIP PBX lines Extended:
38
Page 40
LANCOM VoIP Routers: PBX Functionalities
Chapter 5: Installing the LANCOM VoIP- Option
5Installing the LANCOM VoIP-Option
This chapter describes how the LANCOM VoIP-32 Option is installed to your
LANCOM Router. Installation of the takes place in four steps:
Checking the prerequisites for installation
Online registration
Activation of the option
Checking the activation
To extend the number of SIP subscribers on LANCOM business VoIP
routers to 32 you can activate the LANCOM VoIP-32 Option.
5.1Requirements for installation
5.1.1System requirements
Please ensure that you have met all of the requirements to successfully
operate the LANCOM VoIP-Option:
LANCOM Business-VoIP-Router with optional upgrade from 8 to 32 SIP
subscribers.
LCOS Version 7.22 or higher.
5.1.2Package content
Please ensure that the Option package includes the following components:
EN
Proof of license with a printed license number
Manual
5.1.3Configuration computer with the Windows operating system
To install the LANCOM VoIP-Option you require a computer with a current
Windows operating system. Alternatively, activation can be performed via
WEBconfig.
The computer must have access to the LANCOM device that is to be
configured. Access may be via the local network or even via remote access.
39
Page 41
LANCOM VoIP Routers: PBX Functionalities
Chapter 5: Installing the LANCOM VoIP- Option
5.1.4Up-to-date LANconfig
The latest version of LANconfig and LANmonitor are available for download
from the LANCOM Systems homepage under www.lancom.eu/download/
recommend that you update these programs before continuing to the
installation.
5.1.5Up-to- date firmware in the LANCOM
. We
EN
The latest firmware updates are available for download from the LANCOM
Systems web site in the customer portal myLANCOM. Select your device from
the list and download the firmware onto your computer.
Detailed information about updating the firmware is available in the
documentation for your LANCOM router.
5.2Online registration
To activate the LANCOM VoIP-Option you need an activation code.
Please note: The activation code is not included in the package. It will
The LANCOM VoIP-Option is supplied with a proof of license. This has a
license number printed on it. This license number gives you one opportunity
to register with LANCOM Systems and to receive an activation code.
be sent to you on online registration.
After successful online registration, the license number of your
LANCOM VoIP-Option becomes invalid. The activation code that is
supplied can only be used with the LANCOM as identified by serial
number upon registration. Please ensure that you only want to install
the LANCOM VoIP-Option on the corresponding device. It is not
possible to change to another device at a later date!
Necessary registration information
Please have the following information at the ready for your online registration:
Precise designation of the software option
The license number (from the proof of license)
Serial number of your LANCOM (to be found on the underside of the
device)
Your customer data (company, name, postal address, e-mail address).
40
Page 42
LANCOM VoIP Routers: PBX Functionalities
Chapter 5: Installing the LANCOM VoIP- Option
Registration is anonymous and can be completed without specifying
Online entry of registration information
Start a web browser and access the LANCOM Systems web site under
Enter the information as required and follow the subsequent instructions.
personal data. Any additional information may be of help to us in case
of service and support. All information is of course treated with the
strictest confidence.
www.lancom.eu/routeroptions
If you submit an e-mail address you will receive confirmation of
registration via e-mail. Online registration has been completed.
Make sure you store your activation code safely! You may need it at a
later date to activate your LANCOM VoIP-Option again, for example
after a repair.
.
EN
Help in case of problems
If you have problems with registering your software option, please contact us
by e-mail at optionsupport@lancom.de
.
5.3Activating the LANCOM VoIP-Option
Activating the LANCOM VoIP-Option is very simple. In LANconfig, mark the
appropriate LANCOM (simply click on the entry with your mouse) and select
the menu item Device Activate software option. Alternatively, click on
the entry for the device with the right-hand mouse key and select Activatesoftware option from the context menu. In the following window, enter the
activation code that you received with your online registration. The device will
then restart automatically.
41
Page 43
LANCOM VoIP Routers: PBX Functionalities
Chapter 5: Installing the LANCOM VoIP- Option
EN
5.4Checking the activation
You can check if the online activation of your LANCOM VoIP-Option was
successful by selecting the device in LANconfig and selecting the menu item
Device Properties. The properties windows contains a tab named 'Info'
that lists the activated software options.
42
Page 44
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
6Extended functions
This section introduces extended functions that demand a more in-depth
understanding of the PBX in the LANCOM Business-VoIP-Router and of PBXs
in general. Please refer to the LCOS reference manual where necessary.
6.1Setting up call forwarding in the telephone exchange
Within ISDN networks, terminal devices (telephones) use a set of control
sequences—the so-called ISDN facilities—for communications with the
exchange. These facilities allow, for example, call transfers to be set up at the
telephone exchange. For example, if the exchange receives the sequence
*21*0123456789#
, all calls intended for the telephone number or MSN that
issued the sequence will be forwarded to the telephone number
"0123456789". Call forwarding at the exchange prevents ISDN channels from
being blocked, unlike the case when call forwarding is handled by the
telephone itself.
To provide a local telephone infrastructure with the functions of a PBX, the
LANCOM Business-VoIP-Router must be able to process the ISDN-network
control characters, and consequently these characters can no longer be
forwarded to the exchange. The LANCOM Business-VoIP-Router itself
becomes the exchange for any telephones connected to it and it manages all
incoming and outgoing telephone calls. In case of call forwarding the
sequence
*21*0123456789#
sent to the LANCOM Business-VoIP-Router
instructs it to forward all incoming calls to the number "0123456789". The
ISDN exchange does not have any information about this call forwarding.
EN
Local
ISDN
The disadvantage of this variant is that call forwarding blocks two ISDN
channels in the LANCOM Business-VoIP-Router, even though none of the
local users is making a call.
External
ISDN
LANCOM
Business-
43
Page 45
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
In order for call forwarding to be handled by the exchange in combination
with the PBX in the LANCOM Business-VoIP-Router, three entries are required
in the call-routing table:
Called no.CommentTarget no.Destination line
890CF switched off#21#ISDN
891CF switched on*21*0123456789#ISDN
EN
899Check CF*#21#ISDN
For the called number, enter a speed-dial number that is to transmit the
ISDN facilities to the exchange, in this case '890' and upwards. The speed
dial may not contain control characters (* or #).
As target number you enter the ISDN facilities for communication with the
exchange, e.g.
*21*0123456789#
to activate call forwarding.
Enter the external telephone number as a call-forwarding target just
as you would dial the subscriber from the public telephone network.
Even if you have deactivated spontaneous outside line access and you
have to dial a zero for outside calls, the forwarding target here is
entered without a leading zero.
As the target line, enter 'ISDN' for each as this function only refers to the
exchange in the ISDN network.
In this way, the speed dial for immediate, "unconditional call forwarding" can
be complemented by other speed dials for "call forwarding on busy" and
"delayed call forwarding" to trigger call forwarding at the exchange.
External
ISDN
Local
LANCOM Business-
VoIP-Router
Exchange
in the ISDN network
44
Page 46
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
The procedure of call forwarding at the exchange is not visible at the
LANCOM Business-VoIP-Router—consequently the forwarding of
calls is not displayed in LANmonitor.
6.2Life-line support for ISDN telephones
Life-line support allows LANCOM Business-VoIP-Routers to continue to
provide telephony to any connected ISDN telephones, even if the LANCOM
device is unconfigured and/or in case of power outage. To ensure that this
function works, the telephone numbers are mapped twice between the ISDN
NTBA and the terminal equipment.
EN
MSN:
0123456789
At the transition from the ISDN NTBA to the LANCOM Business-VoIP-
Router, the ISDN mapping table for the ISDN line defines the translation
between external MSNs from the ISDN network and internal telephone
numbers. For example, an incoming call for the MSN '0123456789' is
converted into the internal telephone number '11'.
At the transition from the LANCOM Business-VoIP-Router to the ISDN
telephone, the ISDN user table defines the translation between the
internal telephone number and the internal MSN. The incoming call
directed to '11' is converted back into '0123456789'. For this reason, the
ISDN telephone needs this "MSN" programmed into it as its internal MSN
in order for it to react to this telephone number.
ISDN
users
Int. tel. no.
<->
MSN
ISDN
mapping
MSN
<->
Int. tel.
0123456789
0123456789012345678911
MSN:
If the LANCOM Business-VoIP-Router is not available as a telephone
exchange (device is unconfigured or there is a power outage) then the the
ISDN interfaces provide a "bridge" between the internal devices and the
external connection.
A requirement for this function is the correct configuration of the ISDN
interfaces and of the DIP switches on the underside of the device—
these are the standard ex-factory settings.
45
Page 47
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
If the internal MSN in the ISDN user settings agree with the external MSN,
then the ISDN telephone can be operated without the LANCOM BusinessVoIP-Router just as if it were directly connected to the NTBA.
EN
MSN:
0123456789
01234567890123456789
0123456789
Further information on life-line support can be found in the user
manual for your LANCOM Business-VoIP-Router and in the LCOS
reference manual.
ECT setting
ECT (Explicit Call Transfer) is the spontaneous connection of two active calls
by the user: If you are conducting two conversations, you can transfer the two
callers so that they can then communicate with each other (’Spontaneous call
management by the user’ →Page 29).
Local
External
MSN:
46
PSTN
ISDN
An ISDN telephone can transfer and interconnect the two active calls itself—
even without a PBX. The ISDN telephone connects the two calls with each
other internally and the two callers can speak with one another directly. The
disadvantage of this variant is that the two lines which would normally be
available on the ISDN telephone are both engaged. The user who connected
the two callers can no longer conduct calls and is not able to receive calls for
as long as the other two continue their call.
LANCOM
Business-
Page 48
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
Alternatively, the ISDN telephone can delegate the transfer of the two active
calls to the exchange. In this case the LANCOM Business-VoIP-Router works
as the exchange, leaving the ISDN telephone lines free to conduct further
calls.
Local
ISDN
LANCOM
Business-
6.3Messages about calls
You can optionally receive information about all of the calls conducted via the
LANCOM Business-VoIP-Router. In LANconfig you set up the messaging
under VoIP Call Manager General Messaging.
External
EN
PSTN
Here you define whether the messages are to be sent as e-mail and/or SYSLOG
(Facility: Accounting; Level: Info). For every call which is connected (internal,
47
Page 49
LANCOM VoIP Routers: PBX Functionalities
Chapter 6: Extended functions
external, incoming, outgoing), a message is generated containing information
such as the source and target number, start-time and end- time of the call, etc.
For SYSLOG messaging set up a SYSLOG client (LANconfig Log &
EN
Trace SYSLOG) and for e-mail messages set up an SMTP account
(LANconfig Log & Trace SMTP account).
Please not that the information in these messages may be confidential
in nature. In certain cases legal aspects of privacy, data privacy or
labor law may apply.
48
Page 50
Index
LANCOM VoIP Routers: PBX Functionalities
Index
A
Analog telephone
Analog Terminal Adapter
8, 10, 12, 26, 27
ATA
Attended call transfer
C
Call forwarding
Call route
Call router
codec
Consulting
D
DDI
Dialing plan
DIP switch
Direct Dialing In
DNS server
DTMF tones
E
ECT
Exchange
Explicit Call Transfer
External telephone number
F
F key
Fax
Fax over IP
Fax over VoIP
Firmware
Flash
Flash key
Flash/Call hold
FoIP