If your sites run Ericsson Baseband 5216 or 5212 boards inside an RBS 6000 cabinet or a Baseband Main Unit 6601, the natural hardware step is the Ericsson Baseband 6630. Ericsson positioned the 6630 as having capacity and capabilities equivalent to the Baseband 5216, but in a standalone 1U, 19-inch unit with its own cooling, 15 CPRI ports and dual -48 V DC feeds. In practice, the upgrade is less about more capacity and more about removing the chassis, freeing CPRI ports and cutting site power. This guide explains what changes, what stays the same, and what to check before you migrate.
The starting point: Baseband 5216/5212 in an RBS 6000 chassis
Baseband 5216 and 5212 are board-format units. They are 8U high (350 mm), 31 mm wide and 280 mm deep, the same footprint as the older DUS and DUL digital units they replaced, so they slot into the same subracks. Ericsson’s material lists support in RBS 6101, 6102, 6120, 6201, 6202, 6301, 6601 and 6131 node types.
That form factor has a consequence: an RBS 6000 chassis (or the Baseband Main Unit 6601 for main-remote sites) is mandatory. The chassis provides power distribution, climate control and the support system the board depends on.
Each 5216/5212 board has six SFP+ radio interface ports (RI A to RI F) for CPRI links to radio units. When a site needs more than six CPRI connections, a Baseband R503 interconnect unit is added next to the baseband in the main unit. On transport, the board has one 1 Gbps RJ45 port (TN A) and two SFP+ ports (TN B and TN C) that support 1/10 Gbps on the 5216; on the 5212, TN C is limited to 1 Gbps.
The target: Baseband 6630 as a standalone unit
Ericsson released the Baseband 6630 (together with the smaller Baseband 6620) in June 2017. According to Ericsson’s product presentation, the 6630 is:
- 19 inches wide, 1U high and less than 352 mm deep, optimized for main-remote configurations
- Equipped with 15 SFP/SFP+ CPRI ports for radio units, which reduces the need for a Baseband R503
- Fitted with 2 optical 1/10 Gbps SFP/SFP+ transport ports and 2 electrical 1 Gbps RJ45 ports
- Provided with eight external alarm inputs, dual 48 V DC power feeding and self-contained environmental control with a field-replaceable fan unit
- Described by Ericsson as hardware-prepared for NR (5G) and eCPRI
The 6630 can be mounted in a standard 19-inch rack or in the transmission compartment of Ericsson enclosures, in controlled environments. No RBS 6000 subrack is needed.
Baseband 5216 vs Baseband 6630: side by side
| Item | Baseband 5216 (in Main Unit 6601 or RBS 6000) | Baseband 6630 |
|---|---|---|
| Form factor | Board, 8U x 31 mm x 280 mm | Standalone 1U, 19-inch, under 352 mm deep |
| Chassis required | Yes (RBS 6000 cabinet or Main Unit 6601) | No |
| Cooling | Provided by the chassis | Built-in, field-replaceable fan unit |
| CPRI ports | 6 SFP+ (RI A–F); more requires Baseband R503 | 15 SFP/SFP+ |
| Transport ports | 1 x 1G RJ45 + 2 x 1/10G SFP+ | 2 x 1/10G SFP/SFP+ + 2 x 1G RJ45 |
| Power feed | From the chassis power distribution | Dual -48 V DC |
| Capacity class | Reference point | Equivalent to Baseband 5216 (per Ericsson) |
Why operators make this move
Lower power consumption
Ericsson estimated typical power consumption of the Baseband 6630 at 123 W (at 25°C and typical load), and stated it would draw more than 50 W less than the equivalent configuration of Baseband Main Unit 6601 plus Baseband 5216 plus Baseband R503. On sites running on batteries, generators or solar, that saving matters every day.
More CPRI ports without extra hardware
Fifteen CPRI ports on one unit cover multi-band, multi-sector sites that would otherwise need an R503 next to the 5216. Ericsson’s LTE configuration examples for the 6630 include up to 3 sectors with 6 bands, or 6 sectors with 3 bands, using 20 MHz 2T2R FDD cells, and up to 3 sectors with 3 bands using 20 MHz 8T8R TDD cells.
Same multi-standard capability
Like the 5216, the 6630 runs GSM, WCDMA and LTE. From the 17.Q1 software release, Ericsson listed mixed-mode baseband configurations on the 6630 including G+W, G+L, W+L and G+W+L on a single unit, so a mixed-mode 5216 site can be consolidated without splitting technologies across boards.
Smaller footprint
Removing the 6601 main unit or freeing a subrack slot gives space back in shared racks and outdoor enclosures, which helps on rooftop and colocation sites where every rack unit is rented.
What stays the same
Both units belong to Ericsson’s Baseband generation that uses the RadioNode software architecture, with the same O&M model (NETCONF, ECLI and the ECIM-based managed object model) rather than the older DU-based CPP nodes. Teams already integrating 5216 boards through OSS will find the 6630 workflow familiar. Radio units also stay in place: the 6630 connects to the same CPRI-based Ericsson radios. For radio pairing details, see our Ericsson Radio 2219/4415 and baseband compatibility guide.
Migration checklist
- Confirm software level. The 6630 needs a baseband software release that supports it; mixed-mode G+W+L on the 6630 was introduced from 17.Q1. Check the package your OSS runs for the target node.
- Check licensing. Baseband nodes use logical fingerprint licensing rather than hardware-bound keys, but a hardware swap still needs the license key file arranged for the new node.
- Plan CPRI optics and cables. Port positions differ from the 5216 board, so existing fiber jumpers may need re-routing or new lengths. Count the SFPs you need for 15 possible CPRI links.
- Plan power. The 6630 takes dual -48 V DC feeds directly; confirm breakers and cabling at the rack or enclosure.
- Check mounting space. One 1U slot in a 19-inch rack or the transmission compartment of an Ericsson enclosure. Keep the environment within the unit’s controlled-environment rating.
- Verify the unit itself. Read the KDU product number and R-state on the label before installation. Our guide to identifying Ericsson baseband KDU numbers explains what to look for.
When a different unit makes more sense
The 6630 is the like-for-like replacement for a 5216. If you are planning larger capacity or a 5G-focused design, compare it with the Ericsson Baseband 6648. For sites that need the 6630 form factor in a different variant, see the Ericsson Baseband 6631. All Ericsson units we stock are listed in our Ericsson category.
FAQ
Is the Baseband 6630 a direct capacity replacement for the Baseband 5216?
Yes. Ericsson described the 6630’s capacity and capabilities as equivalent to the 5216, and the smaller Baseband 6620 as equivalent to the 5212.
Do I still need a Baseband Main Unit 6601 or RBS 6000 subrack with the 6630?
No. The 6630 is standalone, with its own cooling and dual -48 V DC inputs. It mounts in a 19-inch rack or the transmission compartment of an Ericsson enclosure.
Do I need a Baseband R503 with the 6630?
Usually not. The 6630 has 15 CPRI ports, compared with six on the 5216, which removes the main reason the R503 was added.
Can I keep my existing Ericsson radio units?
Generally yes. The radios connect over CPRI just as they did to the 5216, subject to software support for the specific radio in the release you run.
Get a tested Baseband 6630
Every unit we sell is functionally tested before shipment, and radio units such as RRUs are also VSWR tested. All equipment comes with a 90-day warranty, and we ship worldwide in secure packaging. Contact us on WhatsApp at +86 187 3329 4669 or +86 139 3088 8705, email jack@telecombts.com, or use the form on our contact page. We also buy surplus Huawei, Ericsson and Nokia equipment.