PacketLINK User Manual
7
The Jitter Buffer is used to compensate for packet delay variations between two devices, and the
jitter buffer size has 8 settings of 11, 23, 40, 75, 99, 145, 192 and 239 ms based on the standard
Ethernet frame size of 1518 bytes. The default jitter buffer size of 23ms corresponds to sufficient
buffering to compensate for 11.5ms of packet delay variation in each direction.
2-6 Fault Reporting
Active E1 alarms can be displayed by executing the CLI command
almall
. The alarms are
interpreted as follows:
E1LOS
: Loss of E1 signal from the equipment connected to the E1 port.
E1AIS
: AIS alarm received from the equipment connected to the E1 port.
PWLBIT
: RAI alarm received from the equipment connected to the E1 port.
PWRBIT
: Packet loss has occurred at the remote Ethernet WAN port.
PWSEQNUMERR
: Packets received out of sequence at the local Ethernet WAN port.
JBUFEMP
: Jitter buffer empty has occurred. (Possible reasons could be due to WAN
port Ethernet link down or pseudowire ID mismatched.)
JBUFOV
: Jitter buffer overflow has occurred.
2-7 Default Factory Settings
The PacketLINK default factory settings are shown below.
CO device
(Factory Defaults)
NMS port IP address
192.168.1.11
NMS port subnet mask
255.255.255.0
Default gateway
172.16.1.2
WAN port IP address
172.16.1.1
WAN port subnet mask
255.255.255.0
LAN to WAN port bandwidth
400Kbps
2-8 Using the CLI to Configure the Unit
2-8-1 Using the Console Port
To use the console port, configure your terminal as follows:
115200bps, 8 data bits, no parity, 1 stop bit, no flow control
2-8-2 Using Telnet
The PacketLINK units support Telnet service for remote configuration via the command
line interface. However the Telnet port number has been changed to port 8888 due to the
security issues with default port 23.
