We have a 3640 router connected to a PBX using an E1 connection with the following configuration:
controller E1 3/0
framing NO-CRC4
clock source internal
line-termination 75-ohm
ds0-group 0 timeslots 1-12 type e&m-immediate-start
voice-port 3/0:0
auto-cut-through
define Tx-bits idle 1001
define Tx-bits seize 0001
define Rx-bits idle 1001
define Rx-bits seize 0001
playout-delay mode adaptive
cptone PE
However when the router reload or reset due blakouts the E1 link does not UP.
What the user do to overcome the problem is erase the voice-port and E1 configuration and re-write the commands again.
The solution we have found is to change the E1 configuration to:
ds0-group 0 timeslots 1-12 type e&m-melcas-immed
However the user can not receive fax transmission now.
If the user return to the old configuration they can receive fax transmissions but the problems with the E1 interface persist.
Can someone give us a solution so the user can receive fax transmission keeping the E1 as: ds0-group 0 timeslots 1-12 type e&m-melcas-immed.
My email is: roger.majo@telefonica-data.com.pe
