J7523A Datasheet, PDF (6/8 Pages) Keysight Technologies – Cellular Passive Probe

06 | Keysight | Cellular Passive Probe - Data Sheet
Software Scalability
The Keysight probe is designed to be deployed in a distributed manner to cover either
a subset or the entirety of telecommunications networks. The probes track all events
simultaneously and report data to host (third party applications) based upon the filter
criteria set by the host. The filter criteria are extremely broad and can be changed dy-
namically without the need to stop/start the probe.
To date, the largest single probe deployment covers 150 physical customer sites com-
prising 718 deployed probes. As mentioned previously the probe API can connect to third
party applications (back-end systems). The back-end system is responsible for providing
the probe with the correct filter criteria and acting as a collection point for resulting
event detail reports. The back-end system may be connected to a single probe or many
probes depending upon the physical size of the network being monitored.
When the Keysight probes are connected to a network, they automatically discover
the underlying network configuration. This is a key requirement when connecting to
(for example) Abis signaling links for the purposes of providing measurement data for
geolocation. There may be hundreds of E1s carrying the Abis links and the assignment of
the links within the E1s is dynamic, making configuring these links manually unrealistic.
Auto-discovery ensures that the system is providing useful data in the shortest possible
time and, since it is an ongoing activity, ensures that the probes are always in synchroni-
zation with the network configuration.
In addition to automatically discovering the network configuration the Keysight probes
automatically discover the mapping between IMSI and MSISDN, this provides customers
with the flexibility for monitoring events via IMSI or MSISDN.
Please note that in order for the individual probe servers to distribute necessary informa-
tion and support handover scenarios, Keysight recommends a minimum WAN bandwidth
of 256 Kb/s.
UMTS and LTE Scalability
Individual RNCs have a large number of physical links. This drives the requirement for
multiple probes being deployed to monitor a single RNC. This model is supported by the
Keysight probe.
Physical Scalability
The Keysight probe has four PCI slots into which interface cards may be inserted. Note
there are no small PCI slots in this server. Each interface card has four ports allowing
eight bi-directional links to be monitored per probe server.
Adding an E1/T1 link at a particular probe site may (normally) be accommodated within
existing probe capacity; addition of STM1 links (8 per server) will require provisioning of
new acquisition cards up to the probe server limit, the same is true for Gigabit Ethernet
links if using the 1 GbE card. If using the 10 GbE card, one is supported per probe.
GSM Scalability
The Keysight probe is designed to accommodate the monitoring of one or more BSCs, if
the link capacity of a probe is exceeded by the addition of a new BSC then simply adding
another probe and connecting it into the existing probe network via the WAN ensures
seamless scalability.