[Asterisk-Users] Distorted Sound from E1

[George Pajari]

We're having a problem with an E1 trunk in Mexico into an IVR server and 
would appreciate any suggestions.

Hardware: Digium TE110P jumpered for E1
zaptel.conf:
    span=1,1,0,ccs,hdb3
    # clear=1-30
    bchan=1-15
    bchan=17-31
    dchan=16
    loadzone = us
    defaultzone=us

Circuit status is fine: Status: Provisioned, Up, Active
Calls are accepted by Asterisk without any errors/alarms.
Audio from Asterisk (i.e. playback of pre-recorded sounds is fine).
Audio to Asterisk (i.e. sounds and DTMF from people calling Asterisk 
over the E1) sound as if played back on a tape recorder running at 
half-speed -- slow and down an octave.

What could be causing this?

-- 
George Pajari, netVOICE communications    604 484 VOIP (484 8647 x102)
Open Source VoIP/Telephony Specialists  1 877 NET VOIP (638 8647 x102)
                  www.netvoice.ca  www.ip-centrex.ca
      www.digium.ca www.grandstream.ca www.sipura.ca www.snom.ca