Description
Inter-Tel 520.2300 826.5203-5 LSC 4-Port Line ISA Card PBX Telephony 1995
This is a 4-port line side ISA expansion card designed for Inter-Tel PBX and key telephone systems. It interfaces telephone lines to the system via RJ-11/RJ-14 modular connectors.
Specifications & What's Included
- Model: Inter-Tel 520.2300 / 826.5203-5
- Type: 4-Port Line Side ISA Card
- Bus Interface: ISA
- Connectors: 2x RJ-11/RJ-14 modular jacks on bracket
- Isolation: Bel 2746B transformers (x2)
- Manufactured: United States, 1995
- Included: Card only; no accessories
Applications
This card was used in Inter-Tel business telephone systems to add line interface capacity. It connects incoming telephone lines to the PBX switch, allowing the system to handle additional external lines. Installations typically incorporated these cards in legacy 1990s commercial telephone environments running Inter-Tel hardware.
Condition: Used
This Inter-Tel 520.2300 LSC 4-Port Line ISA Card (826.5203-5) has been inspected and appears to be in good condition. The PCB is clean with no signs of damage, burnt components, or broken traces visible. The bracket shows some surface scuffing and light dust consistent with storage, as seen in the photos. Both RJ modular jacks on the bracket are intact, and the BUSY and ON-LINE LED indicators are present. The ISA edge connector contacts look clean. Please view our photo set and contact us if you have any questions.
This Inter-Tel 520.2300 LSC 4-Port Line ISA Card (826.5203-5) has been inspected and appears to be in good condition. The PCB is clean with no signs of damage, burnt components, or broken traces visible. The bracket shows some surface scuffing and light dust consistent with storage, as seen in the photos. Both RJ modular jacks on the bracket are intact, and the BUSY and ON-LINE LED indicators are present. The ISA edge connector contacts look clean. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
Brand: |
Inter-Tel |
Model: |
520.2300 |
MPN: |
826.5203-5 |
Secondary Model: |
826.5203-5 |
Type: |
4-Port Line Side ISA Expansion Card |
SKU: |
48278 |
Form Factor: |
ISA Card |
Bus Interface: |
ISA |
Number of Ports: |
4 |
Connector Type: |
RJ-11 / RJ-14 (2x modular jacks on bracket) |
Application: |
PBX / Business Telephone System Line Interface |
Compatible With: |
Inter-Tel PBX / Key Telephone Systems |
Transformer / Line Chipset: |
Bel 2746B isolation transformers (x2 visible) |
Seller Notes: |
Card only; no additional accessories included. |
Country/Region of Manufacture: |
United States |
Vintage / Era: |
1995 |
Condition Notes: |
Inter-Tel 520.2300 LSC 4-Port Line ISA Card (826.5203-5) inspected and in good condition. PCB clean, no damage visible. Bracket shows light surface scuffing. RJ jacks and ISA edge connector intact. |
