Single GSM site surrounding by Multi-band sites

Dears,

I've Single GSM site in main city surrounding with Multi-Band sites (GSM & DCS)
where GSM "layer 3" and DCS "layer 2"

hereby almost HO doesn't go to GSM "lower layer"
Do you which parameters I could modify to let handover
go to GSM normally in spite of single GSM lower layer surrounding with DCS

Hi friend it is simple :-)...you can not make interlayer or PBGT HO but you could adjust levels...using the edge HO.
BR
Handover24

Good :-)
Is there any other solution per neighbor relation level

any case has its best solution...it depends and you must try....anyway the main scope is to avoid ping-pong ( so check the number oh Ho among cells ).
Generally you can set parameters in order to have HO from the heavy traffic cell to the other at -90 dBm and from the lower traffic cells to the heavy at -105 dBm but after this changes you must check dcr and so on.
BR