Setting up an Obi 202 + Obiline in the UK (Draft)
Mouse:
OK same packet size, now it is passed straight thru to 202. No call status.
Mouse:
Quote from: Mouse on July 23, 2015, 08:59:12 am
OK same packet size, now it is passed straight thru to 202. No call status.
Sorry my mistake picked up wrong phone!
Jitter is very high for a lan - what gives I wonder?
Problem remains:
Terminal ID SP4 PHONE1
State connected connected
Peer Name
Peer Number 30184009
Start Time 17:02:33 17:02:33
Duration 00:00:05 00:00:05
Direction Inbound Inbound
Peer RTP Address 192.168.1.23:16806
Local RTP Address 192.168.1.21:17118
RTP Transport UDP
Audio Codec tx=G711A; rx=G711A
RTP Packetization (ms) tx=10; rx=10
RTP Packet Count tx=548; rx=546
RTP Byte Count tx=50416; rx=50232
Peer Clock Differential Rate 0 PPM
Packets In Jitter Buffer 9
Packets Out-Of-Order 0
Packets (10ms) Interpolated 3
Packets Late (Dropped) 1
Packets Lost 3
Packet Loss Rate 0 %
Packet Drop Rate 0 %
Jitter Buffer Length 90 ms
Received Interarrival Jitter 10 ms
DTMF Digits Received 0
Jitter Buffer Underruns 1
Jitter Buffer Overruns 0
Sequence number discontinuities 3
skew compensation 10 ms
send silence 0
MOS 4.40
ianobi:
I just called from my OBi110 to my OBi1032 using direct ip to ip calling and got these results on same call:
OBi110
Jitter Buffer Length 170 ms
Received Interarrival Jitter 1 ms
OBi1032
Jitter Buffer Length 250 ms
Received Interarrival Jitter 0 ms
Both devices are in the same lan subnet. Any query to Obihai normally gets the reply "the Jitter Buffer is fully adaptive to network conditions". I would expect my two devices in the same room as the router would be a pretty much perfect network! The OBi110 Jitter Buffer Length does slowly reduce, but I have never seen it below 120. The OBi1032 simply stays at 250 - I think there may need to be some firmware tweaking on that one!
To be fair, call quality seems very high and MOS is good as it should be over a perfect network!
Mouse:
From manual:
$NOEC1 = Disable echo canceller once in the next call on this phone port (phone
-
port specific;
admissible
value: 1) (Not
available on OBi100/OBi110)
$NOJI1
= Disable jitter buffer adjustment once in the next call on this phone port (phone
-
port specific;
admissible
value: 1)
(Not available on OBi100/OBi110)
I am not sure if disabling the adjustment gets you a low value......
ianobi:
This has come up before in connection with sending pace maker data over a voip connection!
Quote
OBI200 ATA Unit – See http://www.obihai.com/OBiDeviceAdminGuide
Add a star code *99 as this:
*99, Modem Call, set($Noji1,200),set($Noec1,1),set($Cdm1,1),call(18002975493)
The 3 set() commands tell the obi to do the following for the next outbound call:
1. Disable Jitter Buffer Adjustment, and use a fixed jitter buffer length of 200 ms
2. Disable Echo Canceller
3. Use only G711u codec
Change Codecs
G711U PacketizationPeriod = 10
I think I'm going to need a beer later 8)
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