Administration HiPath 3000/5000 V7 IP systems

3000sb1.fm
Introduction For internal use only
Features
Restrictions in voice quality can occur in connections that are not QoS-capable (in general,
ADSL connections). High voice quality is generally achieved if a non-QoS-capable Internet
telephony connection is used exclusively for voice connections to the ITSP.
Connection can suffer temporary interruptions as a result of the provider’s network availability.
Please note the ITSP’s terms and conditions. If connections are not set up over SIP,
they can be established by HiPath 3000/5000 7V (HG 1500 V3.0) over ISDN.
The router used by the customer must be able to guarantee good voice quality over QoS
functions and bandwidth control mechanisms.
Although four different Internet telephony service providers (ITSP) may be registered simultaneously,
more connections may be possible depending on bandwidth. The maximum
number of simultaneous calls is calculated based on the upstream rate and the bandwidth
required for each call (128 Kbps).
.[Number of calls = upstream rate (in Kbps) / 128 Kbps]
● Calling party identification:
The CLIP and CLIR features are implemented differently in the individual ITSPs. Restrictions
may occur in call number display or entries may occur in the missed calls list. The
CLIP no Screening feature is currently not supported. The B station’s display/missed calls
list shows the station number of the line to the ITSP - not that of the calling A station.
● Connections with breakout into the fixed network//mobile telephone system or from the
fixed network/mobile telephone system:
Provider-internal connections (destination is busy/not registered)
Internal connections to a busy or unregistered station are generally signaled correctly.
● Calls to other ITSPs
These calls are technically feasible, however, the individual providers match the routing
functions in their network with the relevant business model. For more information, consult
the relevant ITSP.
● Call data evaluation
The SIP protocol records itemized call data by time. Evaluation is possible using external
applications, such as, Teledata Office.
● DTMF transmission over IP
DTMF signals are transmitted in the voice channel. The G.711 codec is required for secure
transmission to the provider.
● Fax transmissions
Fax transmissions are not supported by every provider. We recommend using ISDN for fax
transmissions (default setting).
With HiPath 3000/5000, V6 G.711 gateway channels can be used for fax transmissions
over ITSP connections. The ITSP must guarantee a continuous data stream for this. T.38
to ITSPs is not supported.
P31003-H3570-Y100-4-7618, 2007-10-31
1-18 HiPath 3000/5000 V7, System Description