Auerswald COMpact 5010 VoIP Configuration Manual page 85

account separately (COMset
... or COMset Internal numbers
Exchange line settings + group selection in the list field at the top).
On a system telephone COMfortel 1100/1500/2500/2500 AB/VoIP
2500 AB, a function key can be configured for starting external calls
with selected VoIP access (see the manual for the telephone).
Use/Check of Features
1. Configure the VoIP account.
2. Check the status of the accounts on the page Administration
Monitoring Status int. VoIP subscribers. The three coloured
indication dots show whether logging into the account has been
successful. A coloured indication dot is show for each step of the
login procedure. A green dot indicates a successful step, a grey dot
indicates a currently undefined state and a red dot indicates an
error. If one of these steps fails, it is usually not possible to make
any VoIP calls over the corresponding account. The "outbound
proxy" dot does not turn green until a call has successfully been
made over the account. Please refer to the corresponding online
help for more information.
3. Make an external call over a specific VoIP account. Dial the
account number + exchange line access number 0 + external tele-
phone number (with prefix).
Dependency/Limitations
Make sure that the router in use is explicitly intended for VoIP data
transfer ("SIP aware"). If not, some ports (RTP port and SIP UDP
ports) that are necessary for VoIP data transfer must be released in
the router ("port transfer/forwarding"). You can find a list of the ports
used in the PBX under Administration
You may have to wait a little longer than normal for a connection
when making calls over VoIP.
Currently, emergency calls via VoIP cannot completely be guaran-
teed by all providers. This has to do with the connection to the emer-
gency centre as well as providing the geographic location of the caller
which is so important in the case of an emergency call. Because of
this, the PBX prefers to route emergency calls (that are the calls to
telephone numbers registered under COMset
Emergency call as well as the alarm calls automatically done by
the PBX) via fixed network connections. If all fixed network connec-
tions are busy, another call is disconnected to establish this emer-
gency call in case of an activated emergency call priority – even if the
VoIP accounts and the GSM gateways are not busy. If there are no
fixed network connections available at all (external analogue and S
ports are all connected to GSM gateways), emergency calls are
made over a GSM gateway.
Dialling emergency numbers via VoIP accounts is manually possible
by selecting a special exchange line with the account number.
Note that in case of VoIP access as a preferred exchange line, relia-
bility may suffer compared to fixed network connections. It is a good
idea to also release at least one fixed network connection. For this
purpose, it is possible to allocate priorities for preferred exchange
lines.
Some providers create the impression that Internet telephony is free
of charge. You should be get to know
tariff tables of the corresponding providers. As the connection to a
fixed network telephone is made over gateways (connection comput-
ers), the locations of the gateways are relevant to the call charges.
7
Precondition for a free of charge call is a broadband Internet con-
nection with a corresponding tariff (e.g., DSL flatrate), for that addi-
tional costs will be charged. Calls are only free of charge if they are
made to subscribers of the same VoIP provider or a partner net-
work. More information can be obtained from the corresponding
providers.
COMpact 5010 VoIP/5020 VoIP - Firmware version 4.0 - Configuration Manual 06 08/11
Features – Function and Configuration
Internal numbers Subscriber (scr)
Groups Properties
Monitoring Port Overview.
Internal numbers
7
about the actual costs in the
This is especially important for calls to foreign countries that can be
more expensive than real fixed network calls if the gateways are not
also in the same foreign country.
The transfer quality and also the reliability of Voice over IP depends
to a high degree on the quality of the Internet connection used.
When using the provider T-Online, the Internet telephone number
received from provider must be entered under "Display Name", "User
Name" and "Internet Telephone Number" (COMset
bers Voice over IP (VoIP)
You can deactivate an already configured account by temporarily
selecting "no provider" (COMset
(VoIP) Accounts). When you do this, all the data remain intact; you
can activate the account later by selecting the provider again. Then
the registration procedure (until all green indication dots appear)
must be repeated.
A telephone number presentation restriction for VoIP calls is possible
but is not always supported by the providers.
In order for telephone numbers for incoming VoIP calls listed in the
call data list to be used for callbacks, they usually need to be con-
verted. The rules for this can be configured for each VoIP provider
separately (COMset
(VoIP) Providers
In case of outbound calls via VoIP, no callback (CCBS or CCNR) is
possible.
In case of a flatrate without time limitation, an automatic disconnect
is made every 24 hours by the Internet service provider; this termi-
nates any ongoing call at the time.
If no calls via VoIP are possible, although the registration of the
account and perhaps a first call was successful, this may be caused
by a very short timeout caused by the firewall used. Reduce the
"Interval for NAT keep-alive" for all used providers on the page COM-
set External numbers
figure.
Some VoIP providers block accounts if the "Interval for NAT Keep-
Alive" set is too short. As a rule, this is reported with error message
503 during SIP registration. If this problem occurs, it is recommended
to reduce the value (e.g. to 180).
0
Features – Function and Configuration
Voice over IP (VoIP)
Accounts).
External numbers
External telephone numbers
Configure).
Voice over IP (VoIP)
External num-
Voice over IP
Voice over IP
Provider Con-
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