2501/2514 routers, USR Courier, sync serial and v.25bis dialing
We're trying to connect few routers using conventional switched telco channels and USR Courier modems in syncronous mode.
Modem documentation shows they support v.25bis signalling for dialing in byte-oriented BSYNC and bit oriented HDLC modes, so as cisco 2500 docs shows that dialer in-band command given in serial interface configuration mode activates v.25bis HDLC based version.
So we switched modems into the sync HDLC based v.25bis dialing modes: AT&F1&M7&W
And configured cisco routers:
interface Serial 1
ip address unnumbered ethernet 0
dialer string PHONENUMBER
dialer-list 1 protocol ip permit
ip route 0.0.0.0 0.0.0.0 Serial 1
Next, we activated debug dialer and tried to ping OUTSIDEIP, and debug information shows dialer has dialing that PHONENUMBER but nothing realy happened...
Next command we tried was show interface serial 1 command that showed:
Serial 1 is up(spoofing), line protocol is up(spoofing)
X input errors, X CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
What is the matter of that CRC errors detected and how to fix them?
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