[Asterisk-Users] asterisk and wireless on site personal paging system

[Frank Sautter]

hi,

we are currently planning are large site which will migrate from an old 
siemens hicom pbx to asterisk.

the customer is currently using a paging system (small receivers which 
display a callback number and a base station (transmitter) with several 
antennas at the site)
the problem is, that the currently operative base station uses 4 ISDN 
BRI interfaces. But the protocol is old germany 1TR6 (and not EuroISDN).
- is there anybody with experience on these pager devices? do they have 
a common standard?
- does anybody know of a pager base station with an SIP interface?
- does anybody know of a pager base station with an EuroISDN interface?

what's your general advice on those paging systems?

regards
  frank sautter