Cisco SPA525G - Small Business Pro IP Phone VoIP Manuale d'installazione e d'uso - Pagina 6

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o If you are using an external power source plug the power supply cable into

the power port on the phone base.

NOTE. The Cisco SPA 525G does not ship with a power supply. If you are

not using Power over Ethernet (PoE), you must order the PA-100 power

supply separately.

o If you are using Power over Ethernet (PoE) to power the phone, the phone

will receive power when you connect an Ethernet cable from the phone's

Network port to a switch in your network that provides PoE.

o If you are using a headset, plug the 2.5mm jack into the port on the right

hand side of the phone.

2.3. Router

Your router should be set up to perform NAT (Network Address Translation) and

act as a DHCP server (or have a standalone DHCP server somewhere on you

network). These features are normally enabled by default on most routers.

An IP address will be allocated to the phone automatically when you plug the

Ethernet cable from your phone into your router.

Please note: you should ensure the following ports are not blocked by the firewall

within your router:

Far end ports

o UDP Ports 4144 and 4244

o UDP Ports 10000 to 32767

o HTPPS Port 443

Local ports

Outbound requests to standard services will be from a random port (as for a PC)

The following ports will be used to receive SIP and RTP packets

o UDP Ports 5061 and 5062

o UDP Ports 4241 to 4280

It is our strong recommendation to minimise the number of firewall rules required

on the router. This will reduce the CPU load on the router and also future proof the

site from future additions to the service.

This can be simply implemented by a single rule which allows all (UDP and TCP)

traffic to and from 154.51.129.0 netmask 255.255.255.0 - this is a /24 network

The system can support both static and dynamic IP addresses.

o Sys Log Port 514

o HTTP Port 80 

o DNS Port 53

o NTP Port 123

o UDP Ports 10000 to 32767

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