Before CDRouter can use any Sangoma A series T1/E1 adapters, the latest stable wanpipe drivers from Sangoma must be installed and the card must be properly configured. Other T1/E1 configuration parameters such as line framing, line encoding, and clocking must be configured to match your test setup. The T1/E1 line can also be configured as a Fractional T1 interface.
CDRouter also supports older legacy S series T1/E1 adapters from Sangoma. For more information on configuring CDRouter to use legacy adapters please see this Knowledge Base article.
The wancfg utility can be used to create a wanpipe configuration file for the Sangoma A101 and A102 adapters. When creating the configuration using the wancfg utility, the following wanpipe variables should be set:
An example wanpipe configuration file for the A101 and A102 adapters can be found in this Knowledge Base article.
Once a wanpipe configuration has been created, the T1/E1 interface should be restarted using the wanrouter restart command.
Once the wanrouter driver has been restarted, the T1/E1 interface should automatically show up in the list of available network interfaces. Typically an A series adapter will show up as w1g1.
The newer A101 and A102 T1/E1 cards from Sangoma do not include the HDLC checksum when packets are returned to Linux. By default, CDRouter expects to find the HDLC checksum at the end of the data packet.
In order to use these cards (A101 and A102) with CDRouter, you must add the following testvar to your CDRouter configuration file:
testvar wanHdlcChecksum no
When the testvar wanHdlcChecksum is set to 'no', CDRouter will no longer check for the HDLC checksum on incoming packets on the T1/E1 line. If testvar wanHdlcChecksum is set to 'yes', CDRouter will report that it can not parse the incoming PPP packets correctly.
For more information please see Appendix B in the CDRouter User's Guide or contact us at support@qacafe.com.