SDP1/2

Forum to post information about the San Diego City Trunked Radio System. This is the best place to post newly discovered talkgroups and other info that pertain to this system.
SDnative
Posts: 168
Joined: Mon Jun 27, 2005 3:04 pm

SDP1/2

Postby SDnative » Tue May 13, 2008 10:52 am

In the LEAN meeting minutes, they frequently refer to RCS/SDP1 or SDP2. Is this the "phone patch 1" or "2" in the SD City TRS or is it another TG that I can't find?

800
Posts: 113
Joined: Sun Oct 08, 2006 4:35 pm

Re: SDP1/2

Postby 800 » Tue May 13, 2008 8:10 pm

SDnative wrote:In the LEAN meeting minutes, they frequently refer to RCS/SDP1 or SDP2. Is this the "phone patch 1" or "2" in the SD City TRS or is it another TG that I can't find?


SDP1 and SDP2 are connections between the consoles at Station M and the consoles at Station A, used to patch talk groups across the two networks.

SDnative
Posts: 168
Joined: Mon Jun 27, 2005 3:04 pm

Postby SDnative » Wed May 14, 2008 10:49 am

OK. But are they the talkgroups called Phone Patch 1 (3056) and Phone Patch 2 (3120) on the City system? Or are they two other talkgroups that are not on a list?

OSW
Posts: 33
Joined: Sat Oct 01, 2005 3:06 am

Re: SDP1/2

Postby OSW » Wed May 14, 2008 8:50 pm

800 wrote:SDP1 and SDP2 are connections between the consoles at Station M and the consoles at Station A, used to patch talk groups across the two networks.
That's pretty obvious from the context but there should be a TG that appears active on either system when this patch is active.

Strangely, I don't see why SD City names TG's after a phonepatch when the only way they could be used for a "phone patch" is if the option to call in to the trunked system and appear on a TG is enabled. This is another topic though.

The question is, what's the ID for these SDP1 and SDP2 TG's.

800
Posts: 113
Joined: Sun Oct 08, 2006 4:35 pm

Re: SDP1/2

Postby 800 » Thu May 15, 2008 7:08 pm

OSW wrote:
800 wrote:SDP1 and SDP2 are connections between the consoles at Station M and the consoles at Station A, used to patch talk groups across the two networks.
That's pretty obvious from the context but there should be a TG that appears active on either system when this patch is active.

Strangely, I don't see why SD City names TG's after a phonepatch when the only way they could be used for a "phone patch" is if the option to call in to the trunked system and appear on a TG is enabled. This is another topic though.

The question is, what's the ID for these SDP1 and SDP2 TG's.


Which ever San Diego City talk group is connected to SDP1 or SDP2 (which are not a TG, but are an audio circuit only [like a phone patch, without the phone]), and which ever RCS talk group is connected at the Station M end. Since it is not a connection of two TGs in the same system, there is not a third TG ID generated.

OSW
Posts: 33
Joined: Sat Oct 01, 2005 3:06 am

Postby OSW » Thu May 15, 2008 9:53 pm

Alright, that makes much more sense.

SkipSanders
Posts: 168
Joined: Sun Dec 03, 2006 10:12 pm

Postby SkipSanders » Fri May 16, 2008 12:51 pm

Note that the two Phone Patch systems are specific frequency, not rotating. PP1 is always on the same channel, and it's not used for routine trunk coms. It's a seperate conventional style channel linked into the system for this use. (So far as I can tell)

SDnative
Posts: 168
Joined: Mon Jun 27, 2005 3:04 pm

Postby SDnative » Fri May 16, 2008 3:11 pm

So let's say that Sheriff Santee is working something and requests CHP, so they patch to LE S CMD or TAC. Then it moves to SDPD area so Sheriff also patches to SDP1 and SDPD patches Eastern to SDP1 on their side, so that everyone can talk/listen to each other. Or can SDPD patch direct to LE S?

800
Posts: 113
Joined: Sun Oct 08, 2006 4:35 pm

Postby 800 » Fri May 16, 2008 7:44 pm

SkipSanders wrote:Note that the two Phone Patch systems are specific frequency, not rotating. PP1 is always on the same channel, and it's not used for routine trunk coms. It's a seperate conventional style channel linked into the system for this use. (So far as I can tell)


Skip -

Does the City have phone patch circuits in addition to the Console Patch circuits (SDP1 and SDP2)?

Don

800
Posts: 113
Joined: Sun Oct 08, 2006 4:35 pm

Postby 800 » Fri May 16, 2008 7:47 pm

SDnative wrote:So let's say that Sheriff Santee is working something and requests CHP, so they patch to LE S CMD or TAC. Then it moves to SDPD area so Sheriff also patches to SDP1 and SDPD patches Eastern to SDP1 on their side, so that everyone can talk/listen to each other. Or can SDPD patch direct to LE S?


You are correct in essence. [SDPD does have direct access to LES CMD and at least one of the TACs.]


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