[asterisk-users] Incoming call doesn't finish when internal phone hangs up

[Daniel - Asterisk]

Hello guys,

I have this problem when a call is received in my PBX:

(Caller) --> (Redirecting Service) --> (E1 PRI) --> (Asterisk PBX) -->
(Internal Phone)

Reception works fine, but when conversation finishes and the agent at
internal phone hangs up, the call at caller's side is still alive for
many seconds until it hangs up.

The problem is that Telephone Company is billing me acording Caller's
duration which is bigger than Asterisk's CDR. The same issue happens
when Caller dials E1 PRI directly. In every case Asterisk finishes
normally the call as CDR and CLI register correctly.

I'm using Asterisk 1.4.21.2 and OpenVox DE210P card. Configuration files follow:

zaptel.conf:
span=1,1,1,ccs,hdb3
bchan=1-15,17-31
dchan=16

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2"
span=2,2,1,ccs,hdb3
bchan=32-46,48-62
dchan=47

# Global data
loadzone        = us
defaultzone     = us
....................

zapata.conf:
[channels]
language=es
context=default
rxwink=300
usecallerid=yes
hidecallerid=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
busydetect=yes
busycount=yes
busypattern=500,500
answeronpolarityswitch=yes
hanguponpolarityswitch=yes

;PRI RDSI - SPAN 1
group = 1
context = incoming-1
inmediate=no
switchtype=euroisdn
signalling=pri_cpe
channel => 1-15,17-31

;PRI RDSI - SPAN 2
group = 1
context = incoming-2
inmediate=no
switchtype=euroisdn
signalling=pri_cpe
channel => 32-46,48-62
...............

Thanks in advance,

Elder Arohuanca Lagos
Phone: +51 1 991696900
Lima - Peru