Meetme quality/timing issues

Asterisk Asterisk Support
1

Hi,

The music on hold and the voice quality when inside a meetme room is extremely bad on our asterisk 1.4 installation when accessed over a PRI trunk. Normal phone calls are fine. I thought its probably a timing issue but I just can’t figure out how to solve it. Our other asterisk machine uses the same configuration without any issues. Can someone please please please point me in the right direction?

We use a digium wildcard TE220 with 2 E1 spans which I presume controls the timing but I’m not sure how to check.
We are running asterisk Asterisk 1.4.42

Output from dahdi_scan:

[1] active=yes alarms=OK description=T2XXP (PCI) Card 0 Span 1 name=TE2/0/1 manufacturer=Digium devicetype=Wildcard TE220 (5th Gen) (VPMOCT064) location=Board ID Switch 0 basechan=1 totchans=31 irq=75 type=digital-E1 syncsrc=1 lbo=0 db (CSU)/0-133 feet (DSX-1) coding_opts=AMI,HDB3 framing_opts=CCS,CRC4 coding=HDB3 framing=CCS [2] active=yes alarms=OK description=T2XXP (PCI) Card 0 Span 2 name=TE2/0/2 manufacturer=Digium devicetype=Wildcard TE220 (5th Gen) (VPMOCT064) location=Board ID Switch 0 basechan=32 totchans=31 irq=75 type=digital-E1 syncsrc=1 lbo=0 db (CSU)/0-133 feet (DSX-1) coding_opts=AMI,HDB3 framing_opts=CCS,CRC4 coding=HDB3 framing=CCS

Output from /etc/dahdi/system.conf:

# Span 1: TE2/0/1 "T2XXP (PCI) Card 0 Span 1"
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
dchan=16
# Span 2: TE2/0/2 "T2XXP (PCI) Card 0 Span 2"
span=2,2,0,ccs,hdb3
bchan=32-46,48-62
dchan=47

I’ve run dahdi_test and couldn’t see anything out of the ordinary.
When playing back the streams recorded using dahdi_monitor the quality is almost equally bad.

output from /proc/dahdi/1 :

Span 1: TE2/0/1 "T2XXP (PCI) Card 0 Span 1" HDB3/CCS ClockSource
        Timing slips: 1
           1 TE2/0/1/1 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           2 TE2/0/1/2 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           3 TE2/0/1/3 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           4 TE2/0/1/4 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           5 TE2/0/1/5 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           6 TE2/0/1/6 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           7 TE2/0/1/7 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           8 TE2/0/1/8 Clear (In use) (EC: VPMOCT064 - INACTIVE)
           9 TE2/0/1/9 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          10 TE2/0/1/10 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          11 TE2/0/1/11 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          12 TE2/0/1/12 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          13 TE2/0/1/13 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          14 TE2/0/1/14 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          15 TE2/0/1/15 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          16 TE2/0/1/16 HDLCFCS (In use) (EC: VPMOCT064 - INACTIVE)
          17 TE2/0/1/17 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          18 TE2/0/1/18 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          19 TE2/0/1/19 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          20 TE2/0/1/20 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          21 TE2/0/1/21 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          22 TE2/0/1/22 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          23 TE2/0/1/23 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          24 TE2/0/1/24 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          25 TE2/0/1/25 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          26 TE2/0/1/26 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          27 TE2/0/1/27 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          28 TE2/0/1/28 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          29 TE2/0/1/29 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          30 TE2/0/1/30 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          31 TE2/0/1/31 Clear (In use) (EC: VPMOCT064 - INACTIVE)

output from /proc/dahdi/2:

Span 2: TE2/0/2 "T2XXP (PCI) Card 0 Span 2" HDB3/CCS
        Timing slips: 2

          32 TE2/0/2/1 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          33 TE2/0/2/2 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          34 TE2/0/2/3 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          35 TE2/0/2/4 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          36 TE2/0/2/5 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          37 TE2/0/2/6 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          38 TE2/0/2/7 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          39 TE2/0/2/8 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          40 TE2/0/2/9 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          41 TE2/0/2/10 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          42 TE2/0/2/11 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          43 TE2/0/2/12 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          44 TE2/0/2/13 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          45 TE2/0/2/14 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          46 TE2/0/2/15 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          47 TE2/0/2/16 HDLCFCS (In use) (EC: VPMOCT064 - INACTIVE)
          48 TE2/0/2/17 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          49 TE2/0/2/18 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          50 TE2/0/2/19 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          51 TE2/0/2/20 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          52 TE2/0/2/21 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          53 TE2/0/2/22 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          54 TE2/0/2/23 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          55 TE2/0/2/24 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          56 TE2/0/2/25 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          57 TE2/0/2/26 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          58 TE2/0/2/27 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          59 TE2/0/2/28 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          60 TE2/0/2/29 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          61 TE2/0/2/30 Clear (In use) (EC: VPMOCT064 - INACTIVE)
          62 TE2/0/2/31 Clear (In use) (EC: VPMOCT064 - INACTIVE)

Thanks for any help you can offer.

2

Please contact Digium’s Support department directly. See this thread:

viewtopic.php?f=1&t=81808