From 3b50bcdbf08c30463cbdb9b180d02d97b8233794 Mon Sep 17 00:00:00 2001 From: Shaun Ruffell Date: Wed, 5 Nov 2008 19:17:52 +0000 Subject: Update system.conf.sample to clarify BRI configuration. git-svn-id: http://svn.asterisk.org/svn/dahdi/tools/trunk@5231 a0bf4364-ded3-4de4-8d8a-66a801d63aff --- system.conf.sample | 40 +++++++++++++++++++++++++++++----------- 1 file changed, 29 insertions(+), 11 deletions(-) (limited to 'system.conf.sample') diff --git a/system.conf.sample b/system.conf.sample index cdfdc20..5bcc7b7 100644 --- a/system.conf.sample +++ b/system.conf.sample @@ -9,14 +9,14 @@ # # span=,,,,[,yellow] # -# All T1/E1 spans generate a clock signal on their transmit side. The +# All T1/E1/BRI spans generate a clock signal on their transmit side. The # parameter determines whether the clock signal from the far -# end of the T1/E1 is used as the master source of clock timing. If it is, our -# own clock will synchronise to it. T1/E1's connected directly or indirectly to +# end of the T1/E1/BRI is used as the master source of clock timing. If it is, our +# own clock will synchronise to it. T1/E1/BRI connected directly or indirectly to # a PSTN provider (telco) should generally be the first choice to sync to. The # PSTN will never be a slave to you. You must be a slave to it. # -# Choose 1 to make the equipment at the far end of the E1/T1 link the preferred +# Choose 1 to make the equipment at the far end of the E1/T1/BRI link the preferred # source of the master clock. Choose 2 to make it the second choice for the master # clock, if the first choice port fails (the far end dies, a cable breaks, or # whatever). Choose 3 to make a port the third choice, and so on. If you have, say, @@ -24,9 +24,10 @@ # port should be different. # # If you choose 0, the port will never be used as a source of timing. This is -# appropriate when you know the far end should always be a slave to you. If the -# port is connected to a channel bank, for example, you should always be its -# master. Any number of ports can be marked as 0. +# appropriate when you know the far end should always be a slave to you. If +# the port is connected to a channel bank, for example, you should always be +# its master. Likewise, BRI TE ports should always be configured as a slave. +# Any number of ports can be marked as 0. # # Incorrect timing sync may cause clicks/noise in the audio, poor quality or failed # faxes, unreliable modem operation, and is a general all round bad thing. @@ -42,12 +43,17 @@ # 6: -15db (CSU) # 7: -22.5db (CSU) # +# If the span is a BRI port the line build-out is not used and should be set +# to 0. +# # framing:: -# one of 'd4' or 'esf' for T1 or 'cas' or 'ccs' for E1 and BRI. +# one of 'd4' or 'esf' for T1 or 'cas' or 'ccs' for E1. Use 'ccs' for BRI. # 'd4' could be referred to as 'sf' or 'superframe' # # coding:: -# one of 'ami' or 'b8zs' for T1 or 'ami' or 'hdb3' for E1 and BRI. +# one of 'ami' or 'b8zs' for T1 or 'ami' or 'hdb3' for E1. Use 'ami' for +# BRI. +# # * For E1 there is the optional keyword 'crc4' to enable CRC4 checking. # * If the keyword 'yellow' follows, yellow alarm is transmitted when no # channels are open. @@ -124,12 +130,13 @@ # dchan:: # The DAHDI driver performs HDLC encoding and decoding on the # bundle and also performs incoming and outgoing FCS insertion -# and verification. 'fcshdlc' is an alias for this. +# and verification. 'fcshdlc' is an alias for this. # hardhdlc:: # The hardware driver performs HDLC encoding and decoding on the # bundle and also performs incoming and outgoing FCS insertion # and verification. Is subject to limitations and support of underlying -# hardware. +# hardware. BRI spans serviced by the wcb4xxp driver must use hardhdlc +# channels for the signalling channels. # nethdlc:: # The DAHDI driver bundles the channels together into an # hdlc network device, which in turn can be configured with @@ -162,6 +169,17 @@ # fxsls=25,26,27,28 # fxols=29-32 # +# An example of BRI port: +# +# span=1,1,0,ccs,ami +# bchan=1,2 +# hardhdlc=3 +# +# NOTE: When using BRI channels in asterisk, use the bri_cpe, bri_net, or +# bri_cpe_ptmp (for point to multipoint mode). libpri does not currently +# support point to multipoint when in NT mode. Otherwise, the bearer channel +# are configured identically to other DAHDI channels. +# #fxoks=1-24 #bchan=25-47 #dchan=48 -- cgit v1.2.3