[cisco-voip] Connecting a Polycom Viewstation FX PRI to 2851 router

[Robert Kulagowski]

Scenario:

2851 router with a VWIC2-2MFT-T1/E1 and a VWIC2-1MFT-T1/E1.  I want to 
connect a Polycom to the router via PRI; the router will have 
connections to the PSTN via the other two T1s.  All calls will go out to 
the PSTN; no inter-office calls over the WAN, don't want it controlled 
by CM, don't want it to have an internal extension, etc, which hopefully 
means that it's a pretty easy config.

I've gotten the PRI to the Polycom operational with the following:

controller T1 0/2/0
  framing esf
  clock source internal
  linecode b8zs
  pri-group timeslots 1-6,24
  description To Polycom

interface Serial0/2/0:23
  no ip address
  encapsulation hdlc
  isdn switch-type primary-5ess
  isdn protocol-emulate network
  isdn map address . plan isdn type national
  isdn integrate calltype all
  no cdp enable

dial-peer voice 7113 pots
  destination-pattern 7113
! I've also tried incoming called-number 7113, same result
  direct-inward-dial
  port 0/2/0:23

However, inbound calls get this:
Jan  8 22:49:02.842: ISDN Se0/1/1:23 Q931: RX <- SETUP pd = 8  callref = 
0x0114
	Bearer Capability i = 0x8890
		Standard = CCITT
		Transfer Capability = Unrestricted Digital
		Transfer Mode = Circuit
		Transfer Rate = 64 kbit/s
	Channel ID i = 0xE1808381
		Preferred, Interface 0, Channel 1
	Net Specific Fac i = 0x00E6
	Called Party Number i = 0xA1, '7113'
		Plan:ISDN, Type:National
Jan  8 22:49:02.846: ISDN Se0/1/1:23 Q931: TX -> RELEASE_COMP pd = 8 
callref = 0x8114
	Cause i = 0x809C - Invalid number format (incomplete number)

Outbound calls aren't working either; from the perspective of the 
polycom, it takes channel 1, generates "ring" back to the user for 30 
seconds or so and then times-out.  (I don't have a log capture of this 
at the moment)

Router is running IOS 12.4.9T.  However, I just looked at 
http://www.cisco.com/en/US/products/ps6441/products_feature_guide09186a0080788070.html 
(Integrated Data, Voice, and Video Services for ISDN Interfaces, 
"Feature Information" it's showing 12.4(11)T, so maybe this isn't 
working because of IOS version?)

Does anyone have a similar configuration that's working?