Nera WILINK I System Manual page 205

PPS = (14.4 Kbps bit rate) / (288 bits) = 50 pps
Note: 288 bits = 36 bytes (voice payload) * 8 bits per byte
Bandwidth per call = total packet size (752 bits) * 50 pps = 37.6 Kbps
As Fax BW is lower than Voice BW, the Voice BW requirement mandates the CG
connection's attributes. This is true for all G.711 codecs.
B.5.5 FAX RTCP BW Calculation
RTCP BW is 10% of RTP: 10 % of 37.6 Kbps is 3.76 Kbps.
B.5.6 QoS Profiles
B.5.6.1 CG QoS for RTP traffic
The calculated bandwidth required for RTP traffic is 87.2 Kbps (equivalent to a
Packet Size of 1744 bits, or 218 bytes). Thus, the CG 88 QoS Profile parameters
are:
Packet Size: 218 bytes
Sample Interval: 20 msec
B.5.6.2 RT QoS for RTCP and VoIP Signaling
The required bandwidth is 10.72 Kbps (8.72 Kbps for Voice RTCP plus 2 Kbps for
VoIP Signaling). We round it up to 611 Kbps. Thus, the required RT 11 QoS
Profile parameters are:
CIR: 11 Kbps
CT: Short
B.5.6.3 BE QoS for Data
As stated, the recommended QoS Profile for Data is BE 64, with the following
parameters:
MIR: 64 Kbps
CT: Medium
WILINK I MODULAR BASE STATION SYSTEM MANUAL
1 POTS Advanced VoIP G.711 Service Profile
195