Cisco GRWIC-ISDN-1B-S/T Cisco network interface module
Brand: Cisco | Category: Accessories & Components
SKU: CSC-GRWIC-ISDN-1B-ST | Part #: GRWIC-ISDN-1B-S/T | MPN: GRWIC-ISDN-1B-S/T
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About the Cisco GRWIC-ISDN-1B-S/T Cisco network interface module
The Cisco GRWIC-ISDN-1B-S/T Cisco network interface module from Cisco is enterprise-grade Accessories & Components hardware built for data centers. It features ISDN interface. The Cisco GRWIC-ISDN-1B-S/T is a single-port ISDN Basic Rate Interface (BRI) network interface module designed for the Cisco Enhanced High-Speed WAN Interface Card (EHWIC) slot architecture found in Cisco Integrated Services Routers Generation 2 (ISR G2) platforms, including the 1900, 2900, and 3900 series. The module provides one ISDN BRI S/T interface, enabling legacy ISDN connectivity over the S/T reference point — the four-wire interface between the ISDN terminal equipmen Available in brand new condition. Cisco accessories & components products are trusted by enterprises and data centers worldwide. Available from Omnixon Global. Contact our sales team to request a quote.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-GRWIC-ISDN-1B-ST |
| Part Number | GRWIC-ISDN-1B-S/T |
| Condition | New |
| Interface | ISDN |
| Manufacturer Part Number | GRWIC-ISDN-1B-S/T |
| Module Type | GRWIC (Gigabit Router WAN Interface Card) |
| Form Factor | GRWIC (single-wide) |
| Compatible Platforms | Cisco ISR G2 1900, 2900, 3900 series (GRWIC slot) |
| Number of WAN Ports | 1 |
| Interface Type | ISDN BRI S/T |
| Physical Reference Point | S/T (four-wire, requires external NT1) |
| ISDN Standard | ITU-T I.430 (Physical Layer), Q.921 (Data Link), Q.931 (Network Layer) |
| Bearer Channels (B-channels) | 1 x 64 Kbps |
| Signaling Channel (D-channel) | 1 x 16 Kbps |
| Maximum Bearer Data Rate | 64 Kbps |
| Connector Type | RJ-45 |
| Software Support | Cisco IOS (DDR, dial backup, ISDN protocols) |
| NT1 Inclusion | Not included — external NT1 required |
| Product Line | Cisco ISDN Interface Modules |
| Genuine Cisco Hardware | Yes — required for Cisco TAC support validation |
Frequently Asked Questions about Cisco GRWIC-ISDN-1B-S/T Cisco network interface module
What does the Cisco GRWIC-ISDN-1B-S/T Cisco network interface module do?
The Cisco GRWIC-ISDN-1B-S/T Cisco network interface module is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.