I have a Cisco 2620 with IOS 12.0(7)XK1 with a NM-2W, 2 WIC-1B-U ISDN interfaces and the serial 0/0
is active on a frame-relay network. The ISDN blades are to serve as a backup in the event of a frame-relay outage. Initially, I had the 2 ISDN blades in the NM-2W. I was unsuccessful in receiving/placing any ISDN calls. I moved one ISDN WIC to 0/0 (off of the NM-2W) and was unsuccessful in receiving/placing
an ISDN call. I am now down to one ISDN WIC in the router (0/0) and still cannot receive/place an ISDN
call. Sho ISDN Stat returns:
Global ISDN Switchtype = basic-ni
ISDN BRI0/0 interface
dsl 0, interface ISDN Switchtype = basic-ni
Layer 1 Status:
Layer 2 Status:
TEI = 72, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI 72, ces = 1, state = 8(established)
spid1 configured, no LDN, spid1 sent, spid1 valid
Endpoint ID Info: epsf = 0, usid = 1, tid = 1
TEI Not Assigned, ces = 2, state = 3(await establishment)
spid2 configured, no LDN, spid2 NOT sent, spid2 NOT valid
If you cannot make a call, I would try checking the spids. I had a router set up similarly and found that if the area code is included in the spids, it may not work. For example, if the spids are 301-555-1212-0101 and 301-555-1213-0101, I would input the spid as follows:
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