XTS-5000/2500 & XTL-5000

[911_Radioman]

Can anyone tell me if XTS-5000 or any of the 'newer' Moto-radios can be re-flashed with firmware to shorten or extend the 'length' of the ISP (Inbound Signal Packet) for use within an existing, P25 Phase 1 compliant system (e.g. 12.5 kHz channels, 9600 baud control channel signaling, IMBE vocoding version 6.X)?

Also, can the 'listen on control channel' be likewise shortened or extended for a longer duration channel assignment or registration OSP (Outbound Signal Packet)?

Many thanks in advance.

Steve

 

[greenthumb]

The mentioned radios can be flashed for operation with the 9600 control channel. When this is done, the signalling formats will change to accomodate the P-25 standards. It will cost a pretty penny, but it can be done rather easily.

 

[911_Radioman]

9600 baud is the current P25 signaling.

I'm interested in standards not-yet-issued (e.g. IP radio).

Just as NEXTEL's switch based architecture gets you a 'channel grant' faster than Verizon's IP-based PTT, I suspect it'll take longer to acquire a channel across RF Sub Systems when using an 'open-standards IP network', such as is envisioned for the next (Version 7 Motorola) standard.

Thanks for your response.

Steve

 

[greenthumb]

I believe that APCO Project 16 defined the system access time for public safety trunked communications, and I am sure that standard will continue forward in all public safety trunked systems. If the channel access time is large, PS users won't buy it. I'm not sure whether Motorola is going Phase-II in 7.x or if they are saving it for 8.x. At any rate, those radios will carry forward to phase II, as I understand it.

 

[911_Radioman]

Phase II is 6.25 kHz channels. No one knows whether they'll do it FDMA (which is what MOT prefers) or TDMA, which is what EADS wants. (Side note EADS bought Nokia's TETRA business AFTER Nokia signed an agreement to not market TETRA in the States).

MOT's making noise that 7.X will be IP radio, but I don't know if they have a handset that'll do 'IP' all the way to the radio...we might have to wait another 9 years for one, at least from them.

If NEXTEL/Verizon is any comparison, system access times for a truly IP-based network are going to be slower. I'd like to know how much.