TELES ECOTEL - Bandwidth Control

CONFIGURATION FILES
CHAPTER 5
47
ECOTEL 3G 16.1. Revised: 1 March 2011.
Example:
5.1.8 BANDWIDTH CONTROL
In many implementation scenarios, the ECOTEL in router mode (e.g. as DSL router) sends voice and data traffic
through a connection with limited bandwidth. This can lead to lost voice packets that arrive too late to be used in
the voice stream. To avoid lost packets, this QOS setting prioritizes packet transmission. You must set the priority
for voice signaling and for the voice packets. That means you must prioritize SIP/H.323, RTP and RTCP. You will
find the ports used in Table 5.18, in the following entries:
H225Port
SipPort
VoipRtp Port
VoipRtpPortSpacing
Different ports can be used for RTP and RTCP, depending on the configuration.
The parameter
VoipRtpPort shows the first RTP port used. The corresponding RTCP port is the next one up.
The parameter
VoipRtpPortSpacing shows the next RTP port (RTP port + port spacing).
[firewall]
; loopback
fw=pass in quick on emac0 all
fw=pass out quick on emac0 all
; traffic to outgoing
fw=pass out quick on pppoe0 proto tcp all flags S keep state keep frags
fw=pass out quick on pppoe0 proto udp all keep state keep frags
fw=pass out quick on pppoe0 proto icmp all keep state keep frags
; incoming traffic
fw=pass in quick on pppoe0 proto tcp from 10.4.0.0/16 to any port eq 21 flags S keep state keep frags
fw=pass in quick on pppoe0 proto tcp from 10.4.0.0/16 to any port eq 23 flags S keep state keep frags
fw=pass in quick on pppoe0 proto tcp from 10.4.0.0/16 to any port eq 4445 keep state
; icmp traffic
fw=pass in quick on pppoe0 proto icmp all keep state
; other will be blocked
fw=block in log quick on pppoe0 all
fw=block out log quick on pppoe0 all
Table 5.7 Settings in the [altqd] Section of the ip.cfg
interface <interface> bandwidth <bw> priq
Defines the interface for which the rule applies.
<interface>
Sets the interface for which prioritization applies (e.e. pppoe0).
<bw>
Sets the bandwidth that is available on the interface in Kbit/s (e.g. 256K).
priq Priority qeueing. A higher priority class is always served first.
class priq <interface> <class> root priority <prio>
Defines the priority of the filter entries.