Cisco SPA 508G Administration Guide

Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA 300 Series, SPA 500 Series, and WIP310 IP Phone Administration Guide 225
B
RTP Parameters
Parameter Description
RTP Port Min Minimum port number for RTP transmission and
reception. Minimum port number for RTP transmission
and reception. Should define a range that contains at
least 10 even number ports (twice the number of lines);
for example, configure RTP port min to 16384 and RTP
port max to 16402.
Defaults to 16384.
RTP Port Max Maximum port number for RTP transmission and
reception. Should define a range that contains at least
10 even number ports (twice the number of lines); for
example, configure RTP port min to 16384 and RTP
port max to 16402.
Defaults to 16482.
RTP Packet Size Packet size in seconds, which can range from 0.01 to
0.16. Valid values must be a multiple of 0.01 seconds.
Defaults to 0.030.
Max RTP ICMP Err Number of successive ICMP errors allowed when
transmitting RTP packets to the peer before the IP
phone terminates the call. If value is set to 0, the IP
phone ignores the limit on ICMP errors.
Defaults to 0.

Cisco SPA 508G Specifications

General

Speakerphone	Yes
Dialer location	Base
Mac compatibility	No
Ethernet LAN (RJ-45) ports	2
Display resolution	128 x 64 pixels
Display number of colors	Monochrome
Headphone connectivity	2.5 mm

Weight and Dimensions

Depth	212 mm
Width	214 mm
Height	44 mm
Weight	900 g