Hi Elder,
I would first check the behaviour of your PSTN lines (i.e. nothing to do with 
Asterisk). In many places PSTN companies allow between 30 to 90 seconds of 
connection to remain open even if the -called- party, NOT the calling party, 
has hung-up. Normally this is to allow putting down the phone in one room and 
picking up in another room without disconnecting the line. Make a small test to 
verify this and if this is the case you will need to discuss this with your 
PSTN provider.
Harel

Date: Thu, 8 Jul 2010 12:01:40 -0500
From: Daniel - Asterisk <earohua...@gmail.com>
Subject: [asterisk-users] Incoming call doesn't finish when internal
        phone   hangs up
To: Asterisk Users Mailing List - Non-Commercial Discussion
        <asterisk-users@lists.digium.com>
Message-ID:
        <aanlktikxafnxhbsws0ov4u5ht3yjbeevuh26vehrg...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

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



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