XCVRs of 9600 Frame

Product : Motorola.
Part involved : 9600 Frame.
Summary : Distribution of XCVR cards into 9600 Motorola cabinet.
Scenario : The analog cell site coverage area (AMPS , NAMPS) used this hardware to manage the outgoing and incoming calls.
Company : Motorola of Perú.
Reference date : December 1997.

The cards inserted from slots 1 to 72 are called XCVR (transceiver) and depends of the location -slot- where the XCVR will be inserted will define what type of funtion will be assigned to XCVR working into Motorola cabinet, then the type of XVR are : TCH (trafiic channel), SIG (signalization channel) and SCAN. The range of slots : 2-9, 13-21, 25-36, 38-48, 50-72 are assigned to TCH; 10-12, 22-24 are SIG; 1, 37, 49 are SCAN.

FORDWARD is the link established from the antenna of the Cell site to the mobile phone and REVERSE is the link established from the mobile phone to the antenna of the cell site. The origination of the call party is established on Reverse

SIG 10 : Carry out REVERSE of sector 3.
SIG 11 : Carry out REVERSE of sector 2.
SIG 12 : Carry out REVERSE of sector 1 and FORDWARD of all the Cell Site.
SIG 22 : Redundant of SIG 10.
SIG 23 : Redundant of SIG 11.
SIG 24 : Redundant of SIG 12.

The SCAN measures the power received from the mobile phone –as part of the process involved into REVERSE- then it is taking measure and samples of Handoff process (request HOMR – Handoff Measurement Request), then the current cell site asks to the SCANS of the neighborhood cell sites to compare how do they received the signal of that calling party –tiny, strong signal- and looking if the readings of the signal is inside of the values permited if this condition is fullfilled then the neighborhood cell site takes the control of the calling party and accepted the rest of rotuing connections established in the current call party.