provided by Star2Billing S.L.

in asterisk web call back, i get a place to enter 2 numbers, but i get the call to the first leg and it says please enter the destination number. cant it directly get the number from the web and dial it out ?

in the callback AGIconf i have put the option usednid to yes as well, but still ask for destination number.

what must i do

Your first call is probably failing, and it is prompting for another number.

Check your rate tables, and the add callback page to see why it is failing.

Joe

my cli as bellow, there is a rate for the other number in tarrif, and the call comes when i enter the number when it ask for the destination number

== Using SIP RTP TOS bits 184
== Using SIP RTP CoS mark 5
-- Executing [94112511511@a2billing-callback:1] DeadAGI("SIP/66.240.162.41-00003eb0", "a2billing.php,3,callback") in new stack
-- Launched AGI Script /var/lib/asterisk/agi-bin/a2billing.php
a2billing.php,3,callback: file:Class.A2Billing.php - line:601 - uniqueid: - A2Billing AGI internal configuration:
a2billing.php,3,callback: file:Class.A2Billing.php - line:602 - uniqueid: - Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [dialcommand_param_call_2did] => |60|HiL(%timeout%:61000:30000)
a2billing.php,3,callback: [description] => agi-config
a2billing.php,3,callback: [asterisk_version] => 1_4
a2billing.php,3,callback: [answer_call] => 1
a2billing.php,3,callback: [play_audio] => 1
a2billing.php,3,callback: [say_goodbye] => 0
a2billing.php,3,callback: [play_menulanguage] => 0
a2billing.php,3,callback: [force_language] =>
a2billing.php,3,callback: [intro_prompt] =>
a2billing.php,3,callback: [min_credit_2call] => 0
a2billing.php,3,callback: [min_duration_2bill] => 0
a2billing.php,3,callback: [notenoughcredit_cardnumber] => 0
a2billing.php,3,callback: [notenoughcredit_assign_newcardnumber_cid] => 0
a2billing.php,3,callback: [use_dnid] => 1
a2billing.php,3,callback: [no_auth_dnid] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => 2400
a2billing.php,3,callback: [1] => 2300
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [number_try] => 3
a2billing.php,3,callback: [force_callplan_id] =>
a2billing.php,3,callback: [say_balance_after_auth] => 1
a2billing.php,3,callback: [say_balance_after_call] => 0
a2billing.php,3,callback: [say_rateinitial] => 0
a2billing.php,3,callback: [say_timetocall] => 1
a2billing.php,3,callback: [auto_setcallerid] => 1
a2billing.php,3,callback: [force_callerid] =>
a2billing.php,3,callback: [cid_sanitize] => 0
a2billing.php,3,callback: [cid_enable] => 1
a2billing.php,3,callback: [cid_askpincode_ifnot_callerid] => 1
a2billing.php,3,callback: [failover_lc_prefix] => 0
a2billing.php,3,callback: [cid_auto_assign_card_to_cid] => 0
a2billing.php,3,callback: [callerid_authentication_over_cardnumber] => 0
a2billing.php,3,callback: [sip_iax_friends] => 0
a2billing.php,3,callback: [sip_iax_pstn_direct_call_prefix] => 555
a2billing.php,3,callback: [sip_iax_pstn_direct_call] => 0
a2billing.php,3,callback: [ivr_voucher] => 0
a2billing.php,3,callback: [ivr_voucher_prefix] => 8
a2billing.php,3,callback: [jump_voucher_if_min_credit] => 0
a2billing.php,3,callback: [dialcommand_param] => |60|HL(%timeout%:61000:30000)
a2billing.php,3,callback: [dialcommand_param_sipiax_friend] => |60|HiL(3600000:61000:30000)
a2billing.php,3,callback: [switchdialcommand] => 0
a2billing.php,3,callback: [failover_recursive_limit] => 2
a2billing.php,3,callback: [maxtime_tocall_negatif_free_route] => 5400
a2billing.php,3,callback: [send_reminder] => 0
a2billing.php,3,callback: [record_call] => 0
a2billing.php,3,callback: [monitor_formatfile] => gsm
a2billing.php,3,callback: [agi_force_currency] =>
a2billing.php,3,callback: [currency_association] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => usd:dollars
a2billing.php,3,callback: [1] => mxn:pesos
a2billing.php,3,callback: [2] => eur:euros
a2billing.php,3,callback: [3] => all:credit
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [local_dialing_addcountryprefix] => 0
a2billing.php,3,callback: [max_call_call_2_did] => 3600
a2billing.php,3,callback: [file_conf_enter_destination] => prepaid-enter-dest
a2billing.php,3,callback: [conf_order_menulang] => en:fr:es
a2billing.php,3,callback: [callback_bill_1stleg_ifcall_notconnected] => 1
a2billing.php,3,callback: [international_prefixes] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => 011
a2billing.php,3,callback: [1] => 00
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [extracharge_did] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => 1800
a2billing.php,3,callback: [1] => 1900
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [extracharge_fee] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => 0
a2billing.php,3,callback: [1] => 0
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [extracharge_buyfee] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [0] => 0
a2billing.php,3,callback: [1] => 0
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [maxtime_tounlimited_calls] => 5400
a2billing.php,3,callback: [maxtime_tofree_calls] => 5400
a2billing.php,3,callback: [callplan_deck_minute_threshold] =>
a2billing.php,3,callback: [disable_announcement_seconds] => 0
a2billing.php,3,callback: [verbosity_level] => 4
a2billing.php,3,callback: [logging_level] => 3
a2billing.php,3,callback: [dial_balance_reservation] => 0
a2billing.php,3,callback: [callerid_update] => 0
a2billing.php,3,callback: [cid_auto_create_card] => 0
a2billing.php,3,callback: [cid_auto_create_card_len] => 10
a2billing.php,3,callback: [cid_auto_create_card_typepaid] => PREPAID
a2billing.php,3,callback: [cid_auto_create_card_credit] => 0
a2billing.php,3,callback: [cid_auto_create_card_credit_limit] => 0
a2billing.php,3,callback: [cid_auto_create_card_tariffgroup] => 1
a2billing.php,3,callback: [busy_timeout] => 1
a2billing.php,3,callback: [callback_reduce_balance] => 1
a2billing.php,3,callback: [ivr_enable_locking_option] => 0
a2billing.php,3,callback: [ivr_enable_account_information] => 0
a2billing.php,3,callback: [ivr_enable_ivr_speeddial] => 0
a2billing.php,3,callback: [logger_enable] => 1
a2billing.php,3,callback: [log_file] => /var/log/a2billing/a2billing.log
a2billing.php,3,callback: [dialcommand_param_call_2did ] => |30|HL(3600000:61000:30000)
a2billing.php,3,callback: [currency_association_internal] => Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [usd] => dollars
a2billing.php,3,callback: [mxn] => pesos
a2billing.php,3,callback: [eur] => euros
a2billing.php,3,callback: [all] => credit
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: [file_conf_enter_menulang] => prepaid-menulang
a2billing.php,3,callback: [ivr_voucher_prefixe] => 8
a2billing.php,3,callback: [cheat_on_announcement_time] => 0
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: file:a2billing.php - line:109 - uniqueid: - IDCONFIG : 3
a2billing.php,3,callback: file:a2billing.php - line:110 - uniqueid: - MODE : callback
a2billing.php,3,callback: file:a2billing.php - line:127 - uniqueid: - AGI Request:
a2billing.php,3,callback: Array
a2billing.php,3,callback: (
a2billing.php,3,callback: [agi_request] => a2billing.php
a2billing.php,3,callback: [agi_channel] => SIP/66.240.162.41-00003eb0
a2billing.php,3,callback: [agi_language] => en
a2billing.php,3,callback: [agi_type] => SIP
a2billing.php,3,callback: [agi_uniqueid] => 1298664739.16048
a2billing.php,3,callback: [agi_version] => 1.6.2.13
a2billing.php,3,callback: [agi_callerid] => 123456
a2billing.php,3,callback: [agi_calleridname] => unknown
a2billing.php,3,callback: [agi_callingpres] => 0
a2billing.php,3,callback: [agi_callingani2] => 0
a2billing.php,3,callback: [agi_callington] => 0
a2billing.php,3,callback: [agi_callingtns] => 0
a2billing.php,3,callback: [agi_dnid] => unknown
a2billing.php,3,callback: [agi_rdnis] => unknown
a2billing.php,3,callback: [agi_context] => a2billing-callback
a2billing.php,3,callback: [agi_extension] => 94112511511
a2billing.php,3,callback: [agi_priority] => 1
a2billing.php,3,callback: [agi_enhanced] => 0.0
a2billing.php,3,callback: [agi_accountcode] => 4692284349
a2billing.php,3,callback: [agi_threadid] => 98241424
a2billing.php,3,callback: [agi_arg_1] => 3
a2billing.php,3,callback: [agi_arg_2] => callback
a2billing.php,3,callback: )
a2billing.php,3,callback:
a2billing.php,3,callback: file:a2billing.php - line:129 - uniqueid: - [INFO : A2Billing - Version 1.8.1 (Corylus)]
a2billing.php,3,callback: file:Class.A2Billing.php - line:715 - uniqueid:1298664739.16048 - get_agi_request_parameter = 123456 ; SIP/66.240.162.41-00003eb0 ; 1298664739.16048 ; 4692284349 ; 94112511511
a2billing.php,3,callback: file:a2billing.php - line:1081 - uniqueid:1298664739.16048 - [CALLBACK]:[MODE : CALLBACK]
a2billing.php,3,callback: file:a2billing.php - line:1094 - uniqueid:1298664739.16048 - [CALLBACK]:[NO ANSWER CALL]
a2billing.php,3,callback: file:a2billing.php - line:1140 - uniqueid:1298664739.16048 - [CALLBACK]:[GET VARIABLE : CALLED=94777480646|CALLING=94112511511|CBID=56229-eb5a2cx|LEG=4692284349 | CALLING= | MODE= | TARIFF= | CBID= | LEG=]
a2billing.php,3,callback: file:a2billing.php - line:1144 - uniqueid:1298664739.16048 - [CALLBACK : UPDATE CALLBACK AGI_RESULT : QUERY=UPDATE cc_callback_spool SET agi_result='AGI PROCESSING' WHERE uniqueid='']
a2billing.php,3,callback: file:a2billing.php - line:1148 - uniqueid:1298664739.16048 - [CALLBACK]:[TRY : callingcard_ivr_authenticate]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2591 - uniqueid:1298664739.16048 - - Account code ::> 4692284349
a2billing.php,3,callback: file:Class.A2Billing.php - line:2608 - uniqueid:1298664739.16048 - - Retrieve account info SQL ::> SELECT credit, tariff, activated, inuse, simultaccess, typepaid, creditlimit, language, removeinterprefix, redial, enableexpire, UNIX_TIMESTAMP(expirationdate), expiredays, nbused, UNIX_TIMESTAMP(firstusedate), UNIX_TIMESTAMP(cc_card.creationdate), cc_card.currency, cc_card.lastname, cc_card.firstname, cc_card.email, cc_card.uipass, cc_card.id_campaign, cc_card.id, useralias, status, voicemail_permitted, voicemail_activated, cc_card.restriction, cc_country.countryprefix FROM cc_card LEFT JOIN cc_tariffgroup ON tariff=cc_tariffgroup.id LEFT JOIN cc_country ON cc_card.country=cc_country.countrycode WHERE username='4692284349'
a2billing.php,3,callback: file:Class.A2Billing.php - line:2677 - uniqueid:1298664739.16048 - [SET CHANNEL(language) en]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2681 - uniqueid:1298664739.16048 - [credit=44.16968 :: tariff=4 :: status=1 :: isused=2 :: simultaccess=1 :: typepaid=0 :: creditlimit= :: language=en]
a2billing.php,3,callback: file:Class.A2Billing.php - line:747 - uniqueid:1298664739.16048 - [CARD STATUS UPDATE]
a2billing.php,3,callback: file:Class.A2Billing.php - line:756 - uniqueid:1298664739.16048 - [QUERY USING CARD UPDATE::> UPDATE cc_card SET inuse=inuse+1, credit=credit-0 WHERE username='4692284349']
a2billing.php,3,callback: file:a2billing.php - line:1155 - uniqueid:1298664739.16048 - [CALLBACK]:[Start]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2264 - uniqueid:1298664739.16048 - [AUTO SetCallerID]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2270 - uniqueid:1298664739.16048 - [REQUESTED SetCallerID : 123456]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2282 - uniqueid:1298664739.16048 - [EXEC SetCallerID : 123456]
a2billing.php,3,callback: file:a2billing.php - line:1173 - uniqueid:1298664739.16048 - [CALLBACK]:[CHANNEL STATUS : 6 = Line is up][status_channel=4]:[ORIG_CREDIT : 44.16968 - CUR_CREDIT - : 43.16968 - CREDIT MIN_CREDIT_2CALL : 0]
a2billing.php,3,callback: file:Class.A2Billing.php - line:805 - uniqueid:1298664739.16048 - use_dnid:1 && (!in_array:) && len_dnid:(0 || len_exten:0 ) && (try_num:0)
-- <SIP/66.240.162.41-00003eb0> Playing 'prepaid-enter-dest.gsm' (language 'en')
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
elastix*CLI>
a2billing.php,3,callback: file:Class.A2Billing.php - line:822 - uniqueid:1298664739.16048 - RES DTMF :
a2billing.php,3,callback: file:Class.A2Billing.php - line:893 - uniqueid:1298664739.16048 - DESTINATION ::>
a2billing.php,3,callback: file:Class.A2Billing.php - line:900 - uniqueid:1298664739.16048 - RULES APPLY ON DESTINATION ::>
a2billing.php,3,callback: file:Class.A2Billing.php - line:747 - uniqueid:1298664739.16048 - [CARD STATUS UPDATE]
a2billing.php,3,callback: file:Class.A2Billing.php - line:756 - uniqueid:1298664739.16048 - [QUERY USING CARD UPDATE::> UPDATE cc_card SET inuse=inuse-1, credit=credit+0 WHERE username='4692284349']
a2billing.php,3,callback: file:a2billing.php - line:1572 - uniqueid:1298664739.16048 - [CALLBACK 1ST LEG]:[INFO FOR THE 1ST LEG - callback_username=4692284349
a2billing.php,3,callback: file:a2billing.php - line:1573 - uniqueid:1298664739.16048 - [CALLBACK 1ST LEG]:[TRY : callingcard_ivr_authenticate]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2591 - uniqueid:1298664739.16048 - - Account code ::> 4692284349
a2billing.php,3,callback: file:Class.A2Billing.php - line:2608 - uniqueid:1298664739.16048 - - Retrieve account info SQL ::> SELECT credit, tariff, activated, inuse, simultaccess, typepaid, creditlimit, language, removeinterprefix, redial, enableexpire, UNIX_TIMESTAMP(expirationdate), expiredays, nbused, UNIX_TIMESTAMP(firstusedate), UNIX_TIMESTAMP(cc_card.creationdate), cc_card.currency, cc_card.lastname, cc_card.firstname, cc_card.email, cc_card.uipass, cc_card.id_campaign, cc_card.id, useralias, status, voicemail_permitted, voicemail_activated, cc_card.restriction, cc_country.countryprefix FROM cc_card LEFT JOIN cc_tariffgroup ON tariff=cc_tariffgroup.id LEFT JOIN cc_country ON cc_card.country=cc_country.countrycode WHERE username='4692284349'
a2billing.php,3,callback: file:Class.A2Billing.php - line:2677 - uniqueid:1298664739.16048 - [SET CHANNEL(language) en]
a2billing.php,3,callback: file:Class.A2Billing.php - line:2681 - uniqueid:1298664739.16048 - [credit=44.16968 :: tariff=4 :: status=1 :: isused=2 :: simultaccess=1 :: typepaid=0 :: creditlimit= :: language=en]
a2billing.php,3,callback: file:Class.A2Billing.php - line:747 - uniqueid:1298664739.16048 - [CARD STATUS UPDATE]
a2billing.php,3,callback: file:Class.A2Billing.php - line:756 - uniqueid:1298664739.16048 - [QUERY USING CARD UPDATE::> UPDATE cc_card SET inuse=inuse+1, credit=credit-0 WHERE username='4692284349']
a2billing.php,3,callback: file:a2billing.php - line:1585 - uniqueid:1298664739.16048 - [CALLBACK 1ST LEG]:[MAKE BILLING FOR THE 1ST LEG - TARIFF:4;CALLED=94777480646|CALLING=94112511511|CBID=56229-eb5a2cx|LEG=4692284349]
a2billing.php,3,callback: file:Class.RateEngine.php - line:100 - uniqueid:1298664739.16048 - [CC_asterisk_rate-engine: (4, 94777480646|CALLING=94112511511|CBID=56229-eb5a2cx|LEG=4692284349)]
a2billing.php,3,callback: file:Class.RateEngine.php - line:122 - uniqueid:1298664739.16048 - [CC_asterisk_rate-engine - CALLERID : 123456]
a2billing.php,3,callback: file:Class.RateEngine.php - line:185 - uniqueid:1298664739.16048 - [rate-engine: Count Total result 2]
a2billing.php,3,callback: file:Class.RateEngine.php - line:270 - uniqueid:1298664739.16048 - [CC_asterisk_rate-engine: Count Total result 1]
a2billing.php,3,callback: file:Class.RateEngine.php - line:271 - uniqueid:1298664739.16048 - [CC_asterisk_rate-engine: number_trunk 1]
a2billing.php,3,callback: file:Class.RateEngine.php - line:285 - uniqueid:1298664739.16048 - [CC_RATE_ENGINE_ALL_CALCULTIMEOUT (44.16968)]
a2billing.php,3,callback: file:Class.RateEngine.php - line:291 - uniqueid:1298664739.16048 - [CC_RATE_ENGINE_ALL_CALCULTIMEOUT: k=0 - res_calcultimeout:28620]
a2billing.php,3,callback: file:a2billing.php - line:1601 - uniqueid:1298664739.16048 - [CALLBACK]:[RateEngine -> answeredtime=11]
a2billing.php,3,callback: file:Class.RateEngine.php - line:956 - uniqueid:1298664739.16048 - :[sessiontime:11 - id_cc_package_offer:-1 - package2apply:]
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback:
a2billing.php,3,callback: file:Class.RateEngine.php - line:733 - uniqueid:1298664739.16048 - [CC_RATE_ENGINE_CALCULCOST: K=0 - CALLDURATION:11 - freetimetocall_used=0]
a2billing.php,3,callback: file:Class.RateEngine.php - line:811 - uniqueid:1298664739.16048 - [TEMP - CC_RATE_ENGINE_CALCULCOST: 1. COST: -0.0925]:[ (60/60) * 0.0925 ]
a2billing.php,3,callback: file:Class.RateEngine.php - line:896 - uniqueid:1298664739.16048 - [CC_RATE_ENGINE_CALCULCOST: K=0 - BUYCOST:-0.015583333333333 - SELLING COST:-0.0925]
a2billing.php,3,callback: file:Class.RateEngine.php - line:1039 - uniqueid:1298664739.16048 - [CC_RATE_ENGINE_UPDATESYSTEM: usedratecard K=0 - (sessiontime=11 :: dialstatus=ANSWERED :: buycost=0.015583333333333 :: cost=-0.0925 : signe_cc_call=+: signe=-)]
a2billing.php,3,callback: file:Class.RateEngine.php - line:1104 - uniqueid:1298664739.16048 - [CC_asterisk_stop : SQL: DONE : result=1]
a2billing.php,3,callback: file:Class.RateEngine.php - line:1105 - uniqueid:1298664739.16048 - [CC_asterisk_stop : SQL: INSERT INTO cc_call (uniqueid, sessionid, card_id, nasipaddress, starttime, sessiontime, real_sessiontime, calledstation, terminatecauseid, stoptime, sessionbill, id_tariffgroup, id_tariffplan, id_ratecard, id_trunk, src, sipiax, buycost, id_card_package_offer, dnid, destination) VALUES ('1298664739.16048', 'SIP/66.240.162.41-00003eb0', '4', '', SUBDATE(CURRENT_TIMESTAMP, INTERVAL 11 SECOND) , '11', '11', '94777480646|CALLING=94112511511|CBID=56229-eb5a2cx|LEG=4692284349', 1, now() , '+0.0925', '4', '42', '290389', '', '123456', '4', '0.015583333333333', NULL, '94777480646|CALLING=94112511511|CBID=56229-eb5a2cx|LEG=4692284349', '9477')]
a2billing.php,3,callback: file:Class.RateEngine.php - line:1129 - uniqueid:1298664739.16048 - [CC_asterisk_stop 1.2: SQL: UPDATE cc_card SET credit= credit-0.0925 , lastuse=now(), nbused=nbused+1 WHERE username='4692284349']
a2billing.php,3,callback: file:Class.RateEngine.php - line:1134 - uniqueid:1298664739.16048 - UPDATE cc_trunk SET secondusedreal = secondusedreal + 11 WHERE id_trunk=''
a2billing.php,3,callback: file:Class.RateEngine.php - line:1138 - uniqueid:1298664739.16048 - UPDATE cc_tariffplan SET secondusedreal = secondusedreal + 11 WHERE id='42'
a2billing.php,3,callback: file:Class.A2Billing.php - line:747 - uniqueid:1298664739.16048 - [CARD STATUS UPDATE]
a2billing.php,3,callback: file:Class.A2Billing.php - line:756 - uniqueid:1298664739.16048 - [QUERY USING CARD UPDATE::> UPDATE cc_card SET inuse=inuse-1, credit=credit+0 WHERE username='4692284349']
a2billing.php,3,callback: file:a2billing.php - line:1661 - uniqueid:1298664739.16048 - [SCRIPT TERMINATED FULLY]
-- <SIP/66.240.162.41-00003eb0>AGI Script a2billing.php completed, returning -1
elastix*CLI>

Hello kani,
Did you solved your problem? I have the same.

Igor.

Fixed. I have asterisk 1.8 and a2b is 1.9
Just changed variable asterisk_version in global group from 1_8 to 1_6.

Igor

Hello!

Please check http://www.flashphoner.com
This is RTMP-SIP server for making web calls from the browser to phones
It have built-in FlashPhone and JavaScript Phone

Functions:
- Audio - Speex, g.711, g.729
- Video - h.263, h.264
- SIP - calls, transfer, hold, DTMF, IM chat
- API - ActionScript, JavaScript
- Open source client
- Open source server java app

Thanks,
Pavel

Hi Kani,
I have faced the same problem as you.
you need a callback-daemon and some packages.
1st u need to install some packages like asterisk, asterisk-addons, libpri, lame (optional), dahdi (optional), etc.
then u have to install the callback-daemon (I think ur asterisk and freePBX works fine).

Then follow the steps for daemon -

yum -y install python-setuptools.noarch python-setuptools-devel MySQL-python
easy_install sqlalchemy

cd /usr/src/a2billing/CallBack/callback-daemon-py/dist
tar -xvf callback_daemon-1.0.prod-r1528.tar.gz
cd callback_daemon-1.0.prod-r1528
python setup.py build
python setup.py bdist_egg
easy_install dist/callback_daemon-1.0.prod_r1528-py2.4.egg
cp /usr/src/a2billing/CallBack/callback-daemon-py/dist/callback_daemon-1.0.prod-r1528/build/lib/callback_daemon/a2b-callback-daemon.rc /etc/init.d/a2b-callback-daemon
chmod +x /etc/init.d/a2b-callback-daemon

chkconfig --add a2b-callback-daemon
chkconfig a2b-callback-daemon on
service a2b-callback-daemon start


Now after asterisk reload , reload ur a2b-callback-daemon. I think it will work.
If don't then plz check out the hostname of a2billing MySQL database and the hostname of asterisk database.

Regards,
Faisal