After Cisco acquired Starent, it was clear that the package is not complete without a policy server (or PCRF, as mobile is the hot market now). Considering the good relations Starent had with Camiant (like
here), I was sure that Camiant will follow - but I guess the price was not right so Camiant now is part of Tekelec.
Lightreading is reporting today that a new research note from
Avian Securities speculates that Cisco is looking at
Bridgewater Systems and
Openet to fill this gap.
"Industry contacts indicate that Cisco is looking at Bridgewater Systems and OPENET as possible acquisitions to round out its mobile internet portfolio," writes Catharine Trebnick, a senior research analyst at Avian. "We believe Cisco is looking at these assets to enhance their offering for 3G and 4G networks and this is in-line [with] the company's mobile video strategy."
See "
Rumor: Cisco Hunts for LTE Policy Control Smarts" -
here.
Of the two, Bridgewater is stronger and longer time player in Policy Management, but Openet (historically focusing on charging and billing, and newer to policy management) is a good Cisco partner (se
e "DPI Deployments (9): Orange France Selects Openet and Cisco for Parental Control and Tethering Prevention" -
here).

Nevertheless, Cisco has additional policy-server vendor partners, and I would not rule-out the [smaller]
Broadhop, with which Cisco also partners, mainly in Asia.
And there are more ... - see the list
here.
The price? See analysis of Camiant acquisition price ($130M) Vs. Bridgewater - "
Camiant Information Exposed (and Compared to Bridgewater)" -
here.
Historically, Cisco had relations with other policy-server vendors:
- Back in 1998 Cisco acquired Class Data Systems - "software solutions enable policy-based quality of service in Internet Protocol (IP) networks" - here
- Later Cisco worked closely with Tazz Networks. After the Tazz' dream to be acquired by Cisco had expired, Tazz disappeared. IN 2005, Tazz was #7 in Lightreading Top10 private companies (here).