Asterisk - Configuring A500 BRI as Timing source for Asterisk

A500 BRI card can be used as Timing source for Asterisk , by adding following paramater in /etc/wanpipe/wanpipe1.conf .Note: This is the case when you have only A500 BRI card on the system.

Add TDMV_DUMMY_REF =YES inside [wanpipe1] section:

[trixbox1.localdomain ~]# cat /etc/wanpipe//wanpipe1.conf
#================================================
# WANPIPE1 Configuration File
#================================================
#
# 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.
#================================================
[devices]
wanpipe1 = WAN_AFT_ISDN_BRI, Comment

[interfaces]
w1g1 = wanpipe1, , TDM_VOICE_API, Comment

[wanpipe1]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 9
PCIBUS = 1
FE_MEDIA = BRI
FE_LINE = 1
TDMV_LAW = ALAW
TDMV_DUMMY_REF =YES
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 1

[w1g1]
ACTIVE_CH = ALL
TDMV_ECHO_OFF = NO
TDMV_HWEC = YES
MTU = 80

Note:

Make sure zaptel is installed before and also make sure to choose "SMG(BRI)+Zaptel Support" during the installation of the driver.