05-24-2008 03:05 PM - edited 03-15-2019 10:51 AM
Hi Guys,
My Customer have a solution IP Telephony. The Customer is working with MGCP in CallManager Version 5.1. The carrier set Framing for CRC4, but when I set CRC4 and Gateway and CCM the E1 was down, but when I set framing for no-crc4 the E1 was up and generate Slip Erros. Anyboldy any Idea what is occuring?
Thank You,
Wilson
Solved! Go to Solution.
05-27-2008 12:54 PM
Hi friend,
As Paolo said, slips errors may be due to lack of network-clock-participate and network-clock-select commands.
Now that you check with your Telco that framing is no-crc4, now check if you have network-clock-select and network-clock-participate in your configuration.
If not, please configure under global configuration mode:
Router(config)# network-clock-participate wic 0
Router(config)# network-clock-select 1 E1 0/0/0
Regards,
- adrián.
05-24-2008 03:34 PM
So you need no-crc4. Slips may be due to lack of network-clock-participate and network-clock-select.
05-24-2008 03:40 PM
Hi Bevilacqua,
I will go verify with the carrier if they can configure no-crc4 in the the backbone.
Thank You,
Wilson
05-24-2008 04:15 PM
Perhaps they did without realizing. Just set the network-clock commands correctly because you will need them anyway. crc or no crc doesn't really makes any difference to a circuit.
05-27-2008 12:32 PM
Hi Bevilacqua,
I Confirm again with carrier and They informed to me that is configured frame with no-crc4, but, the problem continue. The E1 is configurate as:
voice class codec 1
codec preference 1 g711alaw
codec preference 2 g729r8
codec preference 3 g729br8
!
controller E1 0/0/0
framing NO-CRC4
pri-group timeslots 1-31 service mgcp
description conexao link CTBC 35120200 (100 RAMAIS)
!
I believe that the configuration is correct, wright? or there are another parameter to be configured in E1?
Thank You,
Wilson
05-27-2008 12:54 PM
Hi friend,
As Paolo said, slips errors may be due to lack of network-clock-participate and network-clock-select commands.
Now that you check with your Telco that framing is no-crc4, now check if you have network-clock-select and network-clock-participate in your configuration.
If not, please configure under global configuration mode:
Router(config)# network-clock-participate wic 0
Router(config)# network-clock-select 1 E1 0/0/0
Regards,
- adrián.
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