Innovaphone IP1200, Administrator'S Manual

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Page 98 innovaphone gateway
noise that existed for the previous conversation phase.
SNTP
The SNTP protocol ( S imple N etwork T ime P rotocol) is used for the
transmission of an official time in networks and in the Internet. The
extended variant is called NTP (
N etwork T ime P rotocol).
SNMP
The S imple N etwork M anagement P rotocol allows central network
management for many network components. The primary objectives of
SNMP are a reduction in the complexity of the management functions, the
extensibility of the protocol and independence of any network components.
Synchronisation
For DECT radios to be able to communicate, they must be synchronised with
one another. In an IP1500 system, synchronisation is obtained using the 2-
wire interface of the CCFP. In an IP1200 system, it is obtained via the air,
however. Therefore, an IP1200 configured as a DECT radio must be created
within the coverage of another DECT radio, from which synchronisation can
be obtained.
In an IP1500 system, only the repeaters must be created within the
coverage of a DECT radio. Of course, this also applies in an IP1200 system.
Synchronisation chain
In a closed system, every IP1200 DECT radio must be synchronised with all
other IP1200 DECT radios. This presupposes that every DECT radio (apart
from one) has a different one configured as the synchronisation source.
The one DECT radio that does not obtain its synchronisation from another
DECT radio is called the “sync master”. It must be an IP1200 and must not
be a repeater. All other DECT radios obtain their synchronisation from this
DECT radio either directly or indirectly.
The name of the field for entering the synchronisation source (“Sync
Master”) is actually wrong: it is not the radio ID of the sync master that is
entered here, but the radio ID of the radio from which synchronisation is to
be obtained. One could also say the next DECT radio in the synchronisation
chain.
For redundancy, an “Alt sync master” can be configured. This is used as the
synchronisation source if the DECT radio configured as the “Sync master” is