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Cisco

Cisco GRWIC-VA-DSL-B | 1x VDSL2/ADSL2/2+ (Annex B over ISDN), RJ-11; VDSL2 PTM, ADSL ATM; profiles up to 17a; GRWIC module

SKU:GRWIC-VA-DSL-B

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Description

Single-port VDSL2 and ADSL2/ADSL2+ GRWIC for Annex B service (over ISDN), enabling broadband WAN on copper in ISDN regions. Supports VDSL2 PTM and ADSL ATM modes with standards-based operation (G.993.2, G.992.5/3/1). Suitable for primary WAN with profile- and loop-length-dependent rates.

Features

- Annex B support for ISDN regions
- VDSL2 primary with ADSL2/ADSL2+ fallback
- PTM and ATM for broad interoperability
- Flexible VDSL2 profiles (e.g., 8x/12a/17a)
- Compact, serviceable GRWIC form factor

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: What is the difference between Annex A and Annex B?
A: Annex A runs over POTS lines, while Annex B is designed for ISDN-based lines common in some regions.

Q: Will this work where ISDN overlay is present?
A: Yes. Annex B is intended for DSL service over ISDN; verify with your provider for specific annex/profile support.

Q: Can it fall back to ADSL2+?
A: Yes. It supports VDSL2 with fallback to ADSL2/ADSL2+ depending on line provisioning.

Q: Which encapsulations are supported?
A: PPPoE and typical DSL encapsulations via PTM for VDSL2 and ATM for ADSL are supported.

Technical Specifications

- Interface: 1x DSL (VDSL2 and ADSL2/ADSL2+)
- Annex: Annex B (over ISDN); provider-dependent support for related annex variants
- Connector: RJ-11
- VDSL2 standards: ITU-T G.993.2 (PTM)
- ADSL standards: ITU-T G.992.5 (ADSL2+), G.992.3 (ADSL2), G.992.1 (ADSL); G.994.1 handshake
- Profiles: selected VDSL2 profiles (e.g., 8a/b/c/d, 12a, 17a)
- Data rates: profile- and loop-length-dependent
- Encapsulation: PTM (VDSL2); ATM-based AAL5 for ADSL/ADSL2+
- Deployment: use with appropriate ISDN splitters/filters as required
- Form factor: GRWIC router module

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