The AX-248C is a Central Exchange Unit for the AX Integrated Audio & Video Security system. Audio/ Video and/or Audio-only Master or Door Stations connect directly to this unit via homerun CAT-5e wiring and RJ45 jacks.
The AX-248C supports up to 8 Master Stations and up to 24 Door/Sub stations. The AX series can be expanded in increments of 32 for up to 120 Door/ Sub stations with the use of AX-320C add-on CEU's.
FEATURES
- Wiring hub for AX Series using Cat-5e
- Two 24V DC power supply input terminals
- Rack mountable
- Controls all functionality of AX Series
- Two BNC composite video outputs and video switching triggers
- CO line transfer (requires Viking K-1900-5 programmable auto-dialer)
- Programmable functionality via supplied software
SPECIFICATIONS
- Consumption: Video: 0.62A max. Audio: 0.65A max.
- CO Line Port: RJ11 for Viking K-1900-5 programmable auto-dialer
- Door Release: Programmable dry contact, 24V AC/DC 500mA (use RY-24L for larger contact rating)
- Mounting: 19" EIA rack (2U) or wall mount
- Wire Type
- Between Door / Sub Station, Master Station, and Central Exchange Unit: Cat-5e
- Power Supply to Central Exchange Unit and Add-On Central Exchange Unit: 2-cond., overall shield - use Aiphone 821802
- Wire Distance
- Door / Sub Station to Central Exchange Unit and Add-On Central Exchange Unit: 980'
- Central Exchange Unit to Master: 980'
- Central Exchange Unit to Add-On Central Exchange Unit: 16'
- Power Supply to Central Exchange Unit and Add-On Central Exchange Unit: 16'(22AWG) 33'(18AWG)
Manufacturer Resources
Product Specs
- Product Type:
- Central Exchange Units
- Series:
- AX Series
- Product Group:
- Electronic Access Controls
- Product Subgroup:
- Parts and Accessories
- Subcategory:
- Accessories
- Commercial/Residential:
- Commercial
- Electronic:
- Yes
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
Aiphone AX-248C – Frequently Asked Questions
1) How many door stations and master stations does the Aiphone AX-248C central exchange unit support?
The AX-248C handles up to 8 Master Stations and up to 24 Door/Sub stations on one unit. If the building outgrows that, the AX system expands in increments of 32 using AX-320C add-on CEUs, up to 120 Door/Sub stations total. Size the CEU to the final station count, not just phase one, because the add-on has to sit within 16 feet of the main unit.
2) What wire do I run for an Aiphone AX system, and how far can I go from the exchange unit to a door station?
Station wiring is homerun Cat-5e with RJ45 jacks, one run per station back to the AX-248C. Run length is 980 feet from the exchange unit to a Door/Sub station, and 980 feet from the exchange unit to a Master. Power wiring is different: 2-conductor with an overall shield (Aiphone 821802), and it is short, 16 feet at 22AWG or 33 feet at 18AWG. Plan the power supply next to the CEU, not down the hall.
3) Can the AX-248C release a door strike directly, or do I need a relay?
There is a programmable dry contact on board rated 24V AC/DC at 500mA. That is enough for a small strike or an interface input, but a maglock or a heavy-draw strike will exceed it. For anything above that rating, run the contact into an Aiphone RY-24L relay and switch the lock power through the relay instead. Note the contact is dry, so lock power comes from your own supply either way.
4) Is the AX-248C the intercom itself, or do I still need to order stations?
It is the wiring hub and controller only, not a station. The AX-248C is the central exchange unit that all AX audio, video, or audio-only Master and Door Stations home run into over Cat-5e, and it controls all functionality of the AX Series. You order the Master Stations, the Door/Sub Stations, and the 24V DC power supplies separately. System behavior is set up in the supplied programming software rather than with dip switches at each station.
5) How do you mount an Aiphone AX-248C exchange unit, in a rack or on the wall?
Either. The AX-248C mounts in a 19 inch EIA rack taking 2U of space, or it wall mounts in a closet or IDF. In a rack, budget the 2U plus room beside it for the power supplies, since those have to be within 16 to 33 feet depending on wire gauge.
6) What power does the Aiphone AX-248C central exchange unit need?
The unit takes 24V DC and has two power supply input terminals. Current draw depends on how the system is used: 0.62A max on video, 0.65A max on audio. Feed it with 2-conductor shielded cable (Aiphone 821802), and keep that run under 16 feet with 22AWG or 33 feet with 18AWG.
7) Can I send AX intercom video to a recorder or a monitor at the security desk?
Yes. The AX-248C has two BNC composite video outputs plus video switching triggers, so door station video can feed a DVR, a spot monitor, or a matrix that switches on call. It is composite BNC, not IP or HDMI, so plan for coax and a device that accepts a composite input.
8) Can an AX intercom call ring out to a phone when nobody is at the desk?
CO line transfer is supported through an RJ11 port on the exchange unit, so an unanswered door call can be forwarded off site. It is not standalone though, it requires a Viking K-1900-5 programmable auto-dialer connected to that port. Budget the dialer as a separate line item on the order.
9) Is the Aiphone AX-248C suitable for a commercial building or is it a residential intercom?
Commercial. The AX-248C is built for commercial installs, and the capacity shows it: 8 masters and 24 door/sub stations, rack mounting, and expansion to 120 stations. It suits multi-tenant, healthcare, school, and office applications where several answering points need to share the same door stations.
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Does the Aiphone AX-248C come with a warranty?
Absolutely. The Aiphone AX-248C is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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