CTI Products EXB-IP Ethernet System Extender - Manual (Page 9)

CTI Products, Inc. EXB-IP User Guide
Introduction 9
The EXB-IP Network Extender Module utilizes IP (Internet Protocol) to implement the link to other EXB-IP
modules. Both Unicast/Replicated and Multicast addressing is supported using UDP transport. “A
PPENDIX F.
IP A DDRESSES ” provides more detail about IP addressing. The IP “port numbers” used by these EXB-IP
modules are 1100 (destination) and 1283 (source).
UDP Ports
UDP (and TCP) Port numbers are used in networking to provide multiple connections to and from an IP device
(ex: a web browser or email in a PC). IP Routers and firewalls are often configured to filter traffic based upon
their destination (and sometimes source) port numbers.
The original EXB-IP modules had fixed source & destination UDP Ports. To allow for more flexibility, the
EXB-IP 8000 modules allow user-selectable destination UDP Ports.
The EXB-IP modules use UDP Ports in their communications as shown below:
Source
UDP Port
Destination UDP Port
Device
(Fixed)
Legacy
(1100) EXB-IP 8000
Port User
Configurable
EXB-IP Legacy
Module 1283 Fixed No No
EXB-IP 8000
Module 1283 Selectable Selectable Yes 1 – 65534
The EXB-IP 8000 Port is a dedicated UDP Port used in Motorola Solutions Inc. (MSI) Astro25™ networks
(version 7.13 and up). The MSI RNI (Radio Network Infrastructure) can be configured to pass EXB-IP 8000
module traffic between sites.
EXB-IP 8000 modules may be used in systems with EXB-IP Legacy modules. Since the legacy modules use
fixed ports, the EXB-IP 8000 modules must be configured for the Legacy UDP Ports to communicate with the
legacy modules.
The UDP Port is a global setting in the EXB Config software. Therefore, all EXB modules will use the same
destination UDP Port number. If there are any Legacy EXB-IP modules in the system, all modules will use the
Legacy Port.