[comp.dcom.telecom] Using 'Other' Cellular Carrier

Jack Winslade <Jack.Winslade@f666.n285.z1.fidonet.org> (07/21/90)

My cellular carrier here is US West, which gives good coverage in the
city and to the east and northeast.  However, there are a couple
places just southwest of Omaha where their signal drops out and I get
the ROAM light from Centel, the other carrier in the area.

The other day, for the heck of it, I switched the unit over to the
Centel system and tried to get through.  I received a line busy tone
after the expected delay.  It was strange, since I knew the number I
was calling was not busy.  I tried using the normal US West service,
and found the line clear to ring.  I switched back and forth a few
times and tried a couple of other numbers.  Same thing.

I'm puzzled as to why Centel would return LINE BUSY, as opposed to ATB
or some type of voice intercept, for the 'foreign' carrier here in the
area.  Another thing that has me wondering -- the manual for the phone
(an older Mitsubishi) states that for the way it is programmed, it
will first try the assigned carrier, but if no channel is available it
will attempt to place the call on an alternate carrier, if available.
I wonder if any busy signals I have gotten during 'drive time' over
the past few years have actually been due to this.
 

Good Day!        JSW

[1:285/666@fidonet] DRBBS Technical BBS, Omaha (1:285/666)

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