Hola que tal, vengo a traer una duda a ver si alguien tiene idea de qué pueda estar pasando, tengo un servidor funcionando con Elastix 2.4 y con una tarjeta sangoma para la troncal e1 de telmex, la configuración no tuve grandes problemas y levantó la troncal poniendose en idle tanto en tx como rx cuando Telmex levantó la troncal, y dejando sacar y recibir llamadas sin mayor problema, el problema es que cuando intento sacar alguna llamada internacional "001." e inclusive también con celulares nacionales "045." la troncal responde con congestion bussy, y me dice que todos los circuitos están ocupados. sin embargo el problema sólo se presenta con esas marcaciones, pues celulares locales, llamadas locales, y larga distancia nacional salen sin problema alguno. a alguno le ha pasado algo similar?. tienen idea si sea algo que tenga que arreglar con telmex, o si sea algo que tenga que ver con mi configuración??... mis archivos de configuración están de la siguiente forma

chan_dahdi.conf

; Autogenerated by /usr/sbin/setup-sangoma 2013-10-31
; If you edit this file and execute /usr/sbin/setup-sangoma again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global settings
;

context=from-pstn
signalling=fxs_ks
rxwink=300 ; Atlas seems to use long (250ms) winks
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
faxdetect=incoming
echotraining=800
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1

;Uncomment these lines if you have problems with the disconection of your analog lines
;busydetect=yes
busycount=3

immediate=no

#include dahdi-channels.conf

dahdi_channels.conf

; Autogenerated by /usr/sbin/dahdi_genconf on Wed Oct 30 18:36:56 2013
; If you edit this file and execute /usr/sbin/dahdi_genconf again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global settings
;

; Span 1: TE2/0/1 "T2XXP (PCI) Card 0 Span 1" (MASTER)
; Skipped: R2
group=0
context=from-pstn
signaling = mfcr2
mfcr2_variant=mx
mfcr2_get_ani_first=no
mfcr2_max_ani=10
mfcr2_max_dnis=4
mfcr2_category=national_subscriber
mfcr2_logdir=span1
mfcr2_call_files=yes
mfcr2_logging=all
mfcr2_mfback_timeout=-1
mfcr2_metering_pulse_timeout=-1
mfcr2_allow_collect_calls=no
mfcr2_double_answer=no
mfcr2_forced_release=no
mfcr2_charge_calls=yes
channel => 1-10
context = default
group = 0

;Sangoma A101 port 1 [slot:4 bus:17 span:1] <wanpipe1>
context=from-zaptel
group=0
echocancel=yes
faxdetect=incoming
signalling=pri_cpe
channel =>1-10

system.conf

#autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
#autogenrated on 2013-10-31
#Dahdi Channels Configurations
#For detailed Dahdi options, view /etc/dahdi/system.conf.bak
loadzone=mx
defaultzone=mx

#Sangoma A101 port 1 [slot:4 bus:2 span:1] <wanpipe1>
span=1,1,0,cas,hdb3
cas=1-10:1101
#echocanceller=mg2,1-10
dchan=16

wanpipe1.conf

#================================================

WANPIPE1 Configuration File

#================================================
#

Date: Wed Dec 6 20:29:03 UTC 2006

#

Note: This file was generated automatically

by /usr/local/sbin/setup-sangoma program.

#

If you want to edit this file, it is

recommended that you use wancfg program

to do so.

#================================================

Sangoma Technologies Inc.

#================================================

wanpipe1 = WAN_AFT_TE1, Comment

w1g1 = wanpipe1, , TDM_VOICE, Comment

CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 4
PCIBUS = 2
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = NCRC4
FE_LINE = 1
TE_CLOCK = MASTER
TE_REF_CLOCK = 0
TE_SIG_MODE = CAS
TE_HIGHIMPEDANCE = NO
TE_RX_SLEVEL = 430
HW_RJ45_PORT_MAP = DEFAULT
LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 1
TDMV_DCHAN = 16
TE_AIS_MAINTENANCE = NO #NO: defualt YES: Start port in AIS Blue Alarm and keep line down
#wanpipemon -i w1g1 -c Ttx_ais_off to disable AIS maintenance mode
#wanpipemon -i w1g1 -c Ttx_ais_on to enable AIS maintenance mode
TDMV_HW_DTMF = YES # YES: receive dtmf events from hardware
TDMV_HW_FAX_DETECT = YES # YES: receive fax 1100hz events from hardware
HWEC_OPERATION_MODE = OCT_NORMAL # OCT_NORMAL: echo cancelation enabled with nlp (default)

OCT_SPEECH: improves software tone detection by disabling NLP (echo possible)

OCT_NO_ECHO:disables echo cancelation but allows VQE/tone functions.

HWEC_DTMF_REMOVAL = NO # NO: default YES: remove dtmf out of incoming media (must have hwdtmf enabled)
HWEC_NOISE_REDUCTION = NO # NO: default YES: reduces noise on the line - could break fax
HWEC_ACUSTIC_ECHO = NO # NO: default YES: enables acustic echo cancelation
HWEC_NLP_DISABLE = NO # NO: default YES: guarantees software tone detection (possible echo)
HWEC_TX_AUTO_GAIN = 0 # 0: disable -40-0: default tx audio level to be maintained (-20 default)
HWEC_RX_AUTO_GAIN = 0 # 0: disable -40-0: default tx audio level to be maintained (-20 default)
HWEC_TX_GAIN = 0 # 0: disable -24-24: db values to be applied to tx signal
HWEC_RX_GAIN = 0 # 0: disable -24-24: db values to be applied to tx signal

ACTIVE_CH = ALL
TDMV_HWEC = YES
MTU = 8

y por ultimo el estado de la tarjeta se ve así

[root@localhost ~]# wanpipemon -i w1g1 -c Ta

***** w1g1: E1 Rx Alarms (Framer) *****

ALOS: OFF | LOS: OFF
RED: OFF | AIS: OFF
LOF: OFF | RAI: OFF

***** w1g1: E1 Rx Alarms (LIU) *****

Short Circuit: OFF
Open Circuit: OFF
Loss of Signal: OFF

***** w1g1: E1 Tx Alarms *****

AIS: OFF | YEL: OFF

***** w1g1: E1 Performance Monitoring Counters *****

Line Code Violation : 362
Far End Block Errors : 0
CRC4 Errors : 0
FAS Errors : 3

Rx Level : > -2.5db