I've done my homework and filled in the references for the Megaco/H.248 requirements document (draft-ietf-megaco-reqs-09.txt) (thanks to those who helped me fill them in):

draft-ietf-megaco-reqs-09.txt references:
13.  References

[1]  S. Bradner, "Key words for use in RFCs to Indicate Requirement Lev-
     els", RFC 2119, March 1997.
[2]  Draft ITU-T Recommendation Q.2630.1, AAL type 2 Signalling Protocol (Capability Set 1), ITU-T Meeting Report COM 11-R 149-E, July 1999

[3]  ITU-T Recommendation H.341, Line Transmission of Non-Telephone Signals, May 1999.
[4]  ATM Forum Technical Committee, af-vtoa-0083.001, Voice and Telephony Over ATM to the Desktop Specification, March 1999.

[5]  ITU-T Recommendatio H.323v2, Packet-based Multimedia Comunications Systems (includes Annex C - H.323 on ATM), February 1998.

[6]  ATM Forum Technical Committee,  af-saa-0124.000, Gateway for H.323 Media Transport Over ATM, May 1999.
[7]  ITU-T Recommendation T.140, Protocol for Multimedia Application Text Conversation, February 1998.
[8]  ITU-T Recommendation V.18, Operational and Interworking Requirements for DCEs Operating in Text Telephone Mode, February 1998.

[9]  ITU-T Q.931, Digital Subscriber Signalling System No. 1 (DSS 1) - ISDN User-Network Interface Layer 3 Specification fro Basic Call Control, March 1993

Nancy
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Nancy M. Greene
Internet & Service Provider Networks, Nortel Networks
T:514-271-7221 (internal:ESN853-1077) E:ngreene@nortelnetworks.com