Identification elements
102
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
4. 7. 4 CLIP format for transit connections in networks
Different CLIP formats are sometimes used in a PISN with PINX in different countries,
with QSIG connection of third-party systems or applications, and with connections via an
SIP network.
The CLIP format and an exchange access prefix can be configured to ensure that the cor-
rect CLIP is displayed in networks whenever possible, even with international transit con-
nections.
You can find the parameters Transit CLIP format and Transit exchange access prefix
in the trunk group configuration ( =bg).
Configure the parameters National prefix and International prefix for the location-re-
lated regional settings ( =fz).
4. 8 CLIP on analogue exchange accesses
The systems are capable of receiving the call number of incoming calls on analogue ex-
change accesses and forwarding it to terminals. This requires a number of settings to be
made in WebAdmin. The network provider must also support CLIP on analogue exchange
accesses in accordance with ETSI standard (ETS 300 778-1).
The standard defines 4 different methods. The CLIP data is transmitted either before or
during the call.
In most countries, CLIP data is transmitted as FSK signal (FSK = Frequency Shift Key-
ing). However, in some countries (for instance; Saudi Arabia) DTMF signals are used.
This can be configured accordingly with the Parameter CLIP detection mode.
Data transmission before the call
Data transmission takes place before the first ring signal. An alerting signal is sent before-
hand. The alerting signal is either:
• a short ring (ring pulse)
• two successive tones (dual tone)
• A line polarity reversal followed by a dual tone.
Data transmission during the call
Data transmission takes place between the first and second ring signal. No special alert-
ing signal is sent (the first ring is used as the alerting signal).
System configuration
You can find the settings for analogue network interfaces ( =7g) under CLIP detection.
To Next Page
Loading...
